Plants make food through photosynthesis, and photosynthesis takes place mostly in plant leaves, but when plants lose their leaves in the winter, they do not die. This is evidence that A. someone gives the plants food every day. B. plants store food for later use. C. photosynthesis also takes place in plant roots. D. plants can use heat in the ground to make food.
Answers
Answer:
I believe it is B. Plants store food for later use.
Explanation:
During the summer when there is abundant sunlight, the plants will store energy to use to survive in winter when sunlight is more scarce.
Answer:
The answer is B: Plants store food for later use. :)
Explanation:
Related Questions
Which of the following does DNA have that
RNA does not? (Check all that apply)
One sugar phosphate
backbone
Two sugar phosphate backbones
Uracil
Thymine
Single helix shape
Double helix shape
Answers
Answer:Thymine, Double helix shape, two sugar phosphate backbones
Explanation:
5. What was the effect of the English policy that gave British officials the right to search without cause, warehouses and ships belonging to colorist
Parliament passed additional policies to protect the colonists' property from seizure.
Parlament enforced the policies as a method to provide for defense of the colonists.
Colorists supported the policy as necessary to discourage taxes on goods.
Colorists protested the policy as an abuse of their individual rights.
Answers
Answer:
c
Explanation:
c
Colorists supported the policy as necessary to discourage taxes on goods was the effect of the English policy that gave British officials the right to search without cause, warehouses and ships belonging to colorist.
What are the roles of colorists?A colorist is a film industry professional who creates a visual color story for a production. In the post-production stage of the film making process, a colorist can use color editing software to add the desired hues, tones and color palates to an edited film.
They also work closely with editors to ensure they use similar software. Colorists have specific software package requirements because most colorists use Adobe products, specifically After Effects and Premiere Pro.
A Colorist is responsible for designing the color scheme of a film in order to achieve a specific mood or visual style. Colorists work closely with a film's director and director of photography to determine what color palette will best serve the story.
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circle the letter for the correct answer. 4 According to cell theory, which statement is true about cells? F Cells are all about the same shape. G Different cells combine to form a tissue. H All cells get energy from food. Cells are all the same on the inside. J
Answers
Answer:
The answer is H.All cells get energy from food.Explanation:
This is due to the process of respiration.What is respiration?This is the process of breaking down of food in the presence of oxygen to release energy.
The energy is then used for performing different functions,the energy is distributed to various places in the body including cells for further used.
Hence we notice,All cells get energy from food.
Because molecules will move from one side to another to come to an equilibrium, or balance of concentration, the _________________________moves from side B to side A, so the water level on side A goes _____________________________.
Answers
Answer:
Water, up
Explanation:
In the process of movement water in the diffusion of water the net movement of water goes from higher concentration to the low concentration area. The movement of water move form one side to other side until it reaches an equilibrium and the level of water on the other side goes up.
Hence, the water molecule will move from from side B to side A until it reaches equilibrium and the water level on side A goes up.
2 3 4 Mark this and return H G 5 Which organelle is labeled I? F 10 Mitili A Save and Exit DELL B E C Next 57:10 Submit Sign out
Answers
In the provided diagram, where the organelle labeled "I" is the chloroplast, it signifies the presence of a crucial organelle within plant cells.
Chloroplasts are unique and essential structures responsible for the process of photosynthesis. This intricate process allows plants to convert light energy from the sun into chemical energy in the form of glucose, while also releasing oxygen as a byproduct.
Chloroplasts possess a distinctive double membrane structure. The inner membrane surrounds the stroma, a semi-fluid matrix containing enzymes, DNA, and ribosomes. Within the stroma, a system of interconnected membranous sacs called thylakoids is present. These thylakoids are organized into stacks called grana, and they contain the pigment chlorophyll.
Chlorophyll is the key player in photosynthesis as it absorbs light energy. When light is absorbed, chlorophyll initiates a series of chemical reactions in the thylakoid membranes, resulting in the conversion of light energy into chemical energy.
This energy is used to generate ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate), which are crucial for the synthesis of glucose.
Overall, chloroplasts are key organelles that enable plants to capture and convert sunlight into energy-rich molecules, ultimately sustaining life on Earth.
Their structural organization, containing chlorophyll and facilitating photosynthesis, illustrates the remarkable adaptation of plants to their environment and their vital role in global ecosystems.
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The complete question is :
Consider this plant cell.
Which organelle is labeled I?
The point where chromosomes are attached are called
A. Chromatids
B. Centromeres
C. Spindles
D. Genes
Answers
Answer:
B. Centromeres
Explanation:
Which conditions are cardiovascular manifestations of alkalosis? Select all that apply. One,some, or all responses may be correct.Increased heart rateDecreased heart rateWidened QRS complexIncreased digitalis toxicityProlonged PR interval
Answers
The cardiovascular manifestations of alkalosis include increased heart rate and prolonged PR interval.
Alkalosis refers to a condition characterized by an excessive alkaline pH or a decrease in the concentration of hydrogen ions in the blood. This altered acid-base balance can affect various body systems, including the cardiovascular system.
1. Increased heart rate: Alkalosis can lead to increased heart rate or tachycardia. The shift towards alkaline pH can affect the sensitivity of cardiac cells to certain ions, such as calcium, which can increase the excitability of the heart and result in a faster heart rate.
2. Prolonged PR interval: Alkalosis can cause a prolonged PR interval, which represents the time taken for the electrical signal to travel from the atria to the ventricles in the heart's electrical conduction system. This delay in conduction can be observed on an electrocardiogram (ECG) and is associated with alkalosis.
On the other hand, the following options are not cardiovascular manifestations of alkalosis:
- Decreased heart rate: Alkalosis is not typically associated with a decreased heart rate. In fact, it tends to have the opposite effect and increase the heart rate.
- Widened QRS complex: A widened QRS complex on an ECG is usually associated with abnormalities in ventricular conduction, but it is not a characteristic cardiovascular manifestation of alkalosis.
- Increased digitalis toxicity: Digitalis toxicity refers to an overdose or accumulation of the medication digitalis, commonly used to treat heart conditions. Alkalosis itself does not directly cause increased digitalis toxicity.
The cardiovascular manifestations of alkalosis include increased heart rate (tachycardia) and a prolonged PR interval on an ECG. It is important to recognize these signs when assessing patients with suspected alkalosis, as it can provide valuable diagnostic information and guide appropriate treatment.
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Activity
Research three types of fiber-optic cables online. Write a brief description of each one.
you are gonna get 20 points
Answers
The three types of fiber-optic cables which can be found online include single mode, multimode, and the plastic optical fiber.
What are Fiber-optic cables?
A fiber-optic cable is also known as the optical-fiber cable. It is an assembly which is very similar to an electrical cable however, it contains one or more different optical fibers which are used to carry the light energy.
Three major types of fiber-optic cables which could be found online are single mode, multimode, and the plastic optical fiber (POF). The multimode optical fiber or the OFC is the cable which is capable of carrying multiple light rays or modes together at the same time as it has varying optical properties at the core of the cable. Single-mode fiber has a much smaller core size which is about 9 microns in length, it is smaller than that of other cable sizes.
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Answer:Single-mode cables include one glass strand (the core), surrounded by three layers of other material (the cladding, the buffer, and the jacket). They are relatively more expensive than other cables. Single-mode cables can transmit data at fast speeds over long distances (up to 62 miles) and offer higher bandwidths.
Multi-mode cables have more than one strand and transmit light along many paths. They support very fast speeds of between 10 Mbps to 10 Gbps over short distances (2,000 and 1,000 feet, respectively). Although these cables can transmit data over short distances, they will distort data over long distances.
Plastic optical fiber cables consist of plastic fibers instead of glass fibers. They are cheaper than glass optical fiber cables. They are similar to multi-mode cables; however, they are only reliable over short distances.
What is DNA?
Byeeee, I'm leaving brainly, just giving points to those who need.
Answers
Answer:
deoxyribose nucleic acid
Answer:
Thx, for the free points!!! : ) Why are you leaving brainly tho?
Explanation:
Describe and compare the sources of Earth's External Energy. (earth and space science)
Answers
The sun is Earth's primary source of external energy. It perfectly heats our planet to the point where life can flourish.
Sunlight is a clean, renewable source of energy. It is a sustainable resource, meaning it doesn't run out, and can be maintained because the sun shines almost every day.
In one second the sun converts 4 million tons of mass into energy in the form of heat and electromagnetic radiation.
The solar constant is how much sunlight power reaches the earth. On average, this value is roughly 1400 watts-per-square-meter. In terms of energy, this equates to about 1.8 × 10¹⁷ joules/second.
Out of the average, total amout of mass the sun converts to energy, the earth captures only 6.25 × 10-⁸%. This is an extremely small percentage , but if it all could be harnessed to use for our electricity needs, we would have more than enough.
Solar energy is perennial and non-polluting.
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What kind of mutation is this?
Original DNA: ACGTAGC
Mutated DNA: ACGTGAGC
deletion
O addition
O point
Answers
Answer: Addition
Explanation:
An additional base was added in the Mutated DNA. The original had 7 bases while the mutated has 8.
A deletion would obviously mean that the mutated DNA has less bases.
A point mutation is when a single nucleotide base is changed so there would be a difference in one of the letters in the mutated DNA.
Sucrose has a ___ linkage between glucose and fructose that is alpha for glucose. a. 1,2 b. 1,3 c. 1,4 d. 1,1
Answers
d. 1,1 Sucrose has a 1,1__ linkage between glucose and fructose that is alpha for glucose
Sucrose, commonly known as table sugar, is a disaccharide composed of glucose and fructose. The linkage between the two monosaccharides is a glycosidic bond formed between the anomeric carbon of glucose (C1) and the hydroxyl group of fructose (C2). This bond is known as a 1,1-glycosidic bond, which means that the two monosaccharides are linked through their first carbon atoms (C1-C2) with an alpha orientation for the glucose molecule. The alpha orientation refers to the configuration of the hydroxyl group attached to the anomeric carbon, which is in the axial position, pointing downwards in the ring structure of glucose. The 1,1-glycosidic bond is different from other types of glycosidic bonds, such as the 1,2, 1,3, and 1,4-glycosidic bonds, which involve different carbon atoms in the monosaccharides and have different orientations of the glycosidic linkage.
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In facilitated diffusion, do molecules move down their concentration gradient?
Answers
Answer:no
Explanation:
no
Answer:Yes
Explanation:
Which figure depicts a transverse plane? Select one:
a.l
b. ll
c. None
d. lll
Answers
b. A plane dividing the body into upper and lower sections is the best representation of a transverse plane in relation to the human body. It cuts across the body horizontally, perpendicular to the longitudinal axis, separating the upper portion (superior) from the lower portion (inferior). So, option B is the right choice.
A transverse plane is a plane that cuts across the body horizontally, perpendicular to the longitudinal axis.It divides the body into upper (superior) and lower (inferior) sections.This plane is often referred to as a horizontal plane or axial plane as well.The transverse plane is useful in anatomical and medical contexts as it allows for the examination of structures and organs in a cross-sectional view.For example, a transverse plane can be used to study and analyze the internal organs of the abdomen or the cross-section of a bone.Option a. (a plane dividing the body into front and back sections) represents a sagittal plane.Option c. (a plane dividing the body into left and right sections) represents a coronal or frontal plane.Option d. (a plane dividing the body into diagonal sections) does not accurately represent a transverse plane.
Therefore, option b. (a plane dividing the body into upper and lower sections) is the best representation of a transverse plane in relation to the human body.
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The complete question may be like:
Which of the following best represents the orientation of a transverse plane in relation to the human body?
a. A plane dividing the body into front and back sections.
b. A plane dividing the body into upper and lower sections.
c. A plane dividing the body into left and right sections.
d. A plane dividing the body into diagonal sections.
prokaryotic operons typically include a(n) ________ and a(n) ________ with multiple genes.
Answers
Prokaryotic operons typically include a promoter region and a coding sequence with multiple genes. The promoter region is located at the beginning of the operon and is responsible for initiating the transcription of the genes.
It contains the necessary sequence elements that attract RNA polymerase, which then binds to the promoter and begins the process of transcription. The coding sequence contains multiple genes that are transcribed together as a single mRNA molecule.
These genes are typically related in function, and their expression is coordinated by the operon. This allows for efficient regulation of gene expression, as the entire operon can be turned on or off in response to changing environmental conditions. Prokaryotic operons are found in bacteria and archaea and are an important mechanism for controlling gene expression in these organisms. Understanding the structure and function of operons is essential for studying prokaryotic biology and for developing new strategies for controlling bacterial growth and pathogenicity.
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Many types of plants produce fruit which is eaten by animals. The seeds of these plants are typically undigestible. Which of the following is an advantage for plants having undigestible seeds? It allows seeds to reside in the gut until conditions are appropriate for germination. It ensures that flowers of these plants will be pollinated. It allows the seeds to be dispersed into other areas. It provides a source of nutrients for the germinating seed.
Answers
The advantage for plants having undigestible seeds is that it allows seeds to reside in the gut until conditions are appropriate for germination.
Fruits are a source of nutrition for animals that consume them, and they are also a means of seed distribution for plants that produce them. Many types of plants generate fruit that is consumed by animals; nevertheless, the seeds of such plants are usually indigestible. As a result, the seeds can be dispersed into new areas by animals that eat the fruit.
However, having undigestible seeds provides a distinct benefit to plants: it allows seeds to reside in the gut until conditions are appropriate for germination, which aids in seed growth and germination.
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research other examples of mutualism. plan a zoo or aquarium exhibit containing both of the species you studied. write a passage that informs visitors about the animals and their mutualistic relationship. for each individual animal, include information such as its common name as well as its scientific name, its diet, its natural habitat, any natural predators or prey, its status as an endangered species, and any other interesting information you find. when describing the mutualism between the two animals, be sure to explain clearly how the relationship benefits both animals.
Answers
One example of mutualism in nature is the relationship between oxpeckers and large mammals, such as zebras.
Oxpeckers are small birds found in savannas and feed on ticks, fleas, and other parasites found in mammals. In return, the oxpeckers receive a food source and a safe place to live, as they can alert their host to the presence of predators.
To showcase this mutualistic relationship in a zoo or aquarium exhibit, visitors could observe a zebra exhibit with a special section featuring oxpeckers. Visitors could learn about the common name and scientific name of both species, as well as their natural habitat and predators. They could also learn about the oxpecker's diet and how they feed on parasites found on mammals.
Zebra:
Common Name: Zebra
Scientific Name: Equus Quagga
Diet: Zebras are herbivores and primarily feed on grasses, leaves, and other vegetation.
Natural Habitat: Zebras are found in various habitats across Africa, including savannas, grasslands, and woodlands.
Natural Predators: Zebras have several natural predators, including lions, hyenas, and crocodiles. They are also targeted by predators like leopards and wild dogs.
Endangered Status: Zebras are not considered endangered. However, certain subspecies, such as the Grevy's zebra (Equus grevyi), are classified as endangered due to habitat loss, poaching, and competition for resources.
Other Information: Zebras are well-known for their distinctive black and white striped patterns, which are unique to each individual. These stripes serve as a form of camouflage and are believed to deter biting flies and other insects.
Oxpeckers:
Common Name: Oxpeckers or TickbirdsScientific
Name: Buphagus spp. (two species: Buphagus africanus and Buphagus erythrorhynchus)
Diet: Oxpeckers have a unique feeding behavior where they primarily feed on ticks, parasites, and insects that inhabit the skin and fur of large mammals such as zebras, giraffes, and buffalo. They also consume earwax and blood from wounds.
Natural Habitat: Oxpeckers are found in sub-Saharan Africa, particularly in open woodland areas and savannas where their preferred mammalian hosts reside.
Natural Predators or Prey: They have a symbiotic relationship with their hosts, as they benefit from the food source provided by the insects and ticks on the mammals' bodies, while also acting as cleaners by removing parasites.
Endangered Status: Oxpeckers are not considered endangered.
Other Information: Oxpeckers have a unique adaptation in the form of sharp, curved bills that are ideal for removing ticks from the hides of mammals. They have a mutualistic relationship with the animals they associate with, as they benefit from the food source, and the mammals benefit from having parasites removed.
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The complimentary base pairs for ACT are
Answers
Chargaff's rule, also known as the complementary base pairing rule, states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.
Explanation:Complementary base pairs refer to the nitrogenous bases adenine, thymine, cytosine, and guanine. in a double strand of DNA, adenine will always pair with its complement thymine and cytosine will always pair with its complement guanine. This means that the two strands are complementary to each other. For example, a strand of DNA with a nucleotide sequence of AGTCATGA will have a complementary strand with the sequence TCAGTACT.
Answer:
cytosine with guanine
Explanation:
Q1: A green plant is kept in a brightly
lighted area for 48 hours. What will
most likely occur if the light intensity is
reduced by half during the next 48
hours?
A. Photosynthesis will stop completely.
B. The rate at which oxygen is released
from the plant will decrease.
C. The rate at which nitrogen is used
by the plant will increase.
D. Glucose production inside each plant
will increase.
Q3: At point C in the graph below,
what factor is most likely limiting
the rate of photosynthesis?
A. Light
intensity
B. 60 C
Temperature
C. Glucose
availability
D. Carbon
Dioxide concentration
rate of photosynthesis
A
light intensity
Q2: What could explain the
difference between line X and line Y in
the graph below?
rate of
photosynthesis
Carbon dioxide
A. Line X represents a plant at lower
concentrations of oxygen
B. Line Y represents a plant at higher
concentrations of carbon dioxide
C. Line Y represents a plant at higher light
intensity
D. Line X represents a plant with more
glucose
A. A
B. B
C. C
D.
D
Q4: At which point is light intensity
the limiting factor for photosynthesis?
rate of photosynthesis
X
A
B
light intensity
D
Answers
1. B. The rate at which oxygen is release from the plant will decrease.
2. C. Line Y represents a plant at higher light
intensity
3. Light
intensity
4. A
What is photosynthesis?Photosynthesis is the process by which green plants and some other organisms transform light energy into chemical energy stored in organic compounds, mainly glucose, through the reaction of carbon dioxide and water, using chlorophyll and other pigments in chloroplasts.
We can see that the questions that we have deal with the graphs that show the factors that are limiting in the process of photosynthesis.
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During which phase(s) of mitosis are structures like the one shown in Figure 10–2 visible?
Answers
Answer:
Prophase
Explanation:
Not 100% sure though.
Answer:
Prophase
Explanation:
During prophase, chromosomes condense which is why it looks like that
5. Clem is developing a model of a cell. He labels a central structure as the nucleus, and writes a caption
that describes how DNA is kept inside the nucleus. Which is an important condition of Clem's model?
A. The model describes eukaryotic cells, but not prokaryotic cells.
B. The model describes animal cells, but not plant cells.
C. The model describes plant cells, but not animal cells.
D. The model describes a cell of a unicellular organism, but not a multicellular organism.
search
Answers
an important condition of Clem's model describes plant cells, but not animal cells. Thus option C is correct.
What are the difference between animal cell and plant cell?In animal cell the nucleus is present along with specialized structures which perform specific functions, cell size is changing normally larger range is from 10-100 micrometers.
In plant cell cell wall is present along with true, membrane-bound nucleus along with other cellular organelles, here the cell size is fixed and large Ranges from 10-30 micrometers.
plant cell have a fixed and rigid shape structure and the cell wall is made up of cell membrane and cellulose, plastids are Present, ribosome and cytoplasm is present, nucleus present on one side.
Animal cell have round and irregular shape structure, does not possess cell wall and plastid do not show photosynthesis and heterotrophic organism depend on others for their food.
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Halp this question please
Answers
Water cycle involves different states through which water goes while suffering processes like evaporation, condensation, precipitation, and collection. a) During evaporation, the source of energy is the sun. b) During presipitation, the source of energy is gravity.
What is the water cycle?
The water cycle is the water circulation process on the Earth, passing through its different states, and impulsed by solar energy. The cycle repeats continuously.
As water moves along the cycle, it suffers different transformations (gas ⇔ liquid ⇔ solid). It can suffer,
- evaporation
- condensation
- precipitation
- collection
Evaporation
Water evaporates from different water mass surfaces, turning from liquid to gas state. These gases move forward to the atmosphere.
Condensation
Once in the atmosphere, water in its gas state reaches heights of low temperature, where it condenses and returns to its liquid state. Drops of water accumulate in clouds.
Precipitation
When water drops are too big, they break equilibrium and precipitate creating rain. Depending on the temperature at which they are exposed, precipitations might be either drop (liquid), snow, or hail (solid).
Collection
It refers to the destiny of water on Earth. Once it gets to the surface, water can end
in water bodies like rivers, oceans, and streams.taken and consumed by living beings.infiltrating on the ground where it accumulates (underground water). running off, which occurs when the ground is too eroded and compact, and water can not infiltrate.And so the cycle begins again.
In the exposed image,
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1. Refer to the data in Model 1.
Flow many males are taller than 175 cm and approximately what percentage is
that?
Answers
Answer:
11 males, 25%
Explanation:
Eleven of the 44 males in this study are taller than 175 centimetres, which makes it one fourth of the total that is 25%. See below:
simplify the fraction \(\frac{11}{44}\)
= \(\frac{1}{4}\) now multiply it by 100 to convert to a percentage value.
= 25%
Answer:
The correct answer is 10 and this is 50%
Explanation:
Tyrone Hayes is well known for his studies of ________.
A. the neurological effects of pesticide poisoning B. the dangers of secondhand smoke C. reproductive and developmental abnormalities in alligators in Lake Apopka D. the dangers of DDT E. reproductive abnormalities in frogs
Answers
The correct option is E.) reproductive abnormalities in frogs
Tyrone Hayes is well known for his studies of reproductive abnormalities in frogs.
Tyrone Hayes, a biologist and professor, gained recognition for his research on the effects of the herbicide atrazine on amphibians, particularly frogs.
His studies revealed that exposure to atrazine could lead to reproductive abnormalities and developmental changes in frogs, including hermaphroditism and altered hormone levels. His research raised concerns about the potential impacts of agricultural chemicals on wildlife populations and their ecosystems.
Tyrone Hayes has been an influential figure in the field of ecotoxicology and has been involved in advocacy efforts related to pesticide regulation and environmental protection.
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______ include everything that is useful as a productive input in its natural state, such as land, forests, mineral and oil deposits, and water .
Answers
The term you are referring to is "natural resources." Natural resources encompass all the elements and materials present in the environment that are considered valuable and useful for human activities. They include everything that is available in its natural state and can be used as productive inputs for various purposes.
Natural resources can be classified into different categories based on their origin and characteristics. Here are some examples:
1. Land and Soil: Land provides a physical space for human activities and supports various ecosystems. It includes arable land for agriculture, forests, grasslands, and other terrestrial environments. Soil, a crucial component of land, is essential for plant growth and agriculture.
2. Water Resources: Water is a vital natural resource, necessary for drinking, irrigation, industrial processes, and the functioning of ecosystems. It includes freshwater sources such as rivers, lakes, and groundwater.
3. Mineral and Energy Resources: This category includes minerals, ores, fossil fuels, and other energy sources. Examples include coal, oil, natural gas, uranium, iron ore, copper, gold, and various other minerals that are extracted and used in industries.
4. Forests and Biodiversity: Forests are rich sources of timber, wood products, and non-timber forest products. They also provide habitat for numerous species and play a crucial role in carbon sequestration and climate regulation.
5. Air and Atmosphere: While not typically thought of as a resource, the atmosphere provides essential gases, such as oxygen and nitrogen, necessary for life. It is also affected by human activities and is a vital component in climate regulation.
Natural resources are essential for sustaining human life and supporting economic activities. However, their availability and distribution are not uniform globally, leading to challenges in resource management, conservation, and equitable access. Responsible and sustainable use of natural resources is crucial to ensure their long-term availability and to mitigate negative environmental impacts.
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Polysaccharides are composed of carbohydrate monomers called.
Answers
Answer: monosaccharides
Explanation:
During an intense workout, martin is pretty sure his body released endorphins. Why is he most likely to reach this conclusion?.
Answers
most likely to reach this conclusion.He felt content and at ease because endorphins are happy and calming.
Your body produces endorphin-related compounds when you exercise. These endorphins interact with the brain's pain-relieving receptors to lessen your experience of discomfort. They are produced in your brain, spinal cord, and many other sections of your body, and are released in reaction to chemicals in the brain called neurotransmitters.Three endogenous opioid peptides—-endorphin, -endorphin, and -endorphin—make up the endorphin class. The precursor protein proopiomelanocortin is the source of all endorphins, and all of them have the Met-enkephalin motif Tyr-Gly-Gly-Phe-Met at their N-terminus. The proteolytic cleavage of -endorphin between the residues Thr(16)-Leu(17) and Leu(17)-Phe(18), respectively, yields -endorphin and -endorphin. The sequence of -endorphin is the shortest, and -endorphin is the longest.
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In a scientific investigation, it is important that the number of objects or events being sampled be?
Answers
It is crucial that there be enough items or events being sampled to provide a reliable estimate for the entire population.Choice A
What is a scientific investigation?The term scientific investigation refer to deliberate search for scientific knowledge. We can search for scientific knowledge by the use of experiments. These experiments are able to establish cause and effect relationships.Scientific research is a strategy for posing issues and evaluating potential answers.In scientific study, observations are typically the first step.Observations are typically followed by questions. A hypothesis is a potential explanation for a scientific question based on current scientific understanding. Thus, in a scientific investigation, it is important that the number of objects or events being sampled be large enough to give an accurate estimate for the whole population. Option ATo learn more about scientific investigation refer
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Describe the necessary elements a peptide sequence must have to fold into a functional form and describe the delicate balance of forces that results in a folded protein.
Answers
The necessary elements a peptide sequence must have to fold into a functional form are, primary, secondary, tertiary and quaternary structures.
The delicate balance of forces that results in a folded protein are, hydrophobic interactions, hydrogen bonds, electrostatic interactions, Van der Waals interactions and disulphide bonds.
To fold into a functional form, a peptide sequence (polypeptide chain) must possess certain elements:
1. Primary Structure: The linear sequence of amino acids in the peptide chain determines the primary structure. It provides the foundation for the subsequent folding and three-dimensional structure of the protein.
2. Secondary Structure: Peptide sequences can adopt specific secondary structures such as alpha helices and beta sheets. These structures are stabilized by hydrogen bonding between the backbone atoms of the peptide chain.
3. Tertiary Structure: The overall three-dimensional arrangement of a peptide chain, including the folding of secondary structural elements, is referred to as its tertiary structure. Various interactions contribute to stabilizing the tertiary structure, including hydrophobic interactions, hydrogen bonding, electrostatic interactions, and disulfide bonds.
4. Quaternary Structure (if applicable): Some proteins consist of multiple polypeptide chains that come together to form a functional protein complex. The arrangement of these individual chains is known as the quaternary structure.
The folding of a protein is governed by a delicate balance of forces, including:
1. Hydrophobic Interactions: Hydrophobic amino acids tend to cluster together in the interior of the protein, away from water molecules. This minimizes the exposure of hydrophobic residues to the aqueous environment.
2. Hydrogen Bonds: These weak interactions form between the hydrogen atom of one amino acid and the electronegative atom (oxygen or nitrogen) of another amino acid. Hydrogen bonds stabilize secondary structures and play a critical role in maintaining the overall protein structure.
3. Electrostatic Interactions: Attractive or repulsive forces between charged amino acids contribute to protein folding. Electrostatic interactions involve ionic bonds between positively and negatively charged amino acids.
4. Van der Waals Interactions: These weak attractions arise from fluctuations in electron density around atoms and contribute to the compact packing of amino acids in the protein's core.
5. Disulfide Bonds: Covalent bonds formed between the sulfur atoms of two cysteine residues contribute to the stabilization of protein structure, particularly in extracellular environments.
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Which parts of the scientific process differentiate it from pseudoscience? Select two options.
Options:
stating facts based on opinions
using models and experiments
asking new questions
making subjective claims
having explanations that answer all questions
Answers
The two parts of the scientific process that differentiate it from pseudoscience are using models and experiments, and asking new questions.
Two parts of the scientific process that differentiate it from pseudoscience are using models and experiments and asking new questions. In science, models and experiments are used to test hypotheses and theories and to collect data that can be analyzed objectively.
Asking new questions is also an essential part of the scientific process, as it leads to new discoveries and advances in knowledge. Pseudoscience, on the other hand, often relies on subjective claims and lacks rigorous testing through experiments and models. Additionally, pseudoscience may make claims that cannot be tested or answered by scientific explanations.
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