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State one reason for transport system in plants.
Answer:
Transportation is the process that involves the movement of water and necessary nutrients to all parts of the plant for its survival.
Explanation:
Transportation is a vital process in plants. Trees transport all the nutrients and water it needs for survival from its roots to the tips of the leaves.
what is the purpose of the mucociliary escalator mechanism?
The purpose of the mucociliary escalator mechanism is to protect and cleanse the respiratory tract by clearing foreign particles, debris, and microorganisms that are inhaled into the lungs.
The mucociliary escalator mechanism is primarily active in the airways of the respiratory system, such as the trachea, bronchi, and bronchioles. It involves two main components: mucus-producing cells and cilia.
Mucus-producing cells secrete a sticky substance called mucus that lines the respiratory tract. The mucus acts as a trap, capturing inhaled particles, such as dust, pollen, bacteria, and viruses, as well as airborne pollutants and other potentially harmful substances.
Cilia are tiny hair-like structures that extend from the cells lining the respiratory tract. The cilia beat in coordinated, wave-like motions, creating a directional flow of the mucus. The ciliary movement, along with the mucus, forms the mucociliary escalator.
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what 2 things balance to maintain the shape of a star?
Pressure and gravity
Cellular respiration, photosynthesis, protein synthesis are examples of which
characteristic of life that produce material necessary for the cell to survive?
O stimulus
O homeostasis
O metabolism
O No answer text provided.
Option C, Cellular respiration, photosynthesis, and protein synthesis are all examples of metabolic processes that are necessary for the survival of a cell.
Metabolism refers to all the chemical reactions that take place within an organism, including the production and consumption of energy and the synthesis of biological molecules. These processes are responsible for maintaining the cell's homeostasis and providing the necessary materials for growth, reproduction, and repair.
Cellular respiration, photosynthesis and protein synthesis are all examples of metabolic processes that are crucial for the survival of a cell. Metabolism is the sum of all the chemical reactions that take place in an organism, including the conversion of energy and the production of biological molecules. In cellular respiration, cells convert the energy from food into a form that can be used by the cell. Photosynthesis is the process that converts light energy into chemical energy in the form of glucose and oxygen, which is essential for the survival of plants and some microorganisms. Protein synthesis is the process by which cells produce proteins, which are essential for the structure and function of all living organisms. These processes are all examples of metabolism, which is a characteristic of life that produce material necessary for the cell to survive.
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there is a heard of deer in a field that has an area of 6km^2 and a population of 54 deer. what is the population density of this herd of deer?
Two students are eating lunch. One student tells the other who is eating a peanut butter and jelly sandwich, "All the energy stored in that sandwich came from plants harnessing the power of the sun as chemical energy!" Is this statement true or false?
Answer:
its true
Explanation:
thats what photosynthesis is-
Answer:
Very much True.
Explanation:
Most everything we eat comes from the trees and plants that let us breath. Wheat Bread or bread in general? Wonder how they make that. Wheat of course! Wheat also happens to be a plant, and even though it doesn't look like your normal plant. It still has the same process of photosynthesis. Thus, harnessing energy from the sun for food.
it is _____ that evolution occurs when new traits accumulate, but it is _____ that evolution only occurs when new traits accumulate. evolution _____ occur when traits are lost. some lineages adapt to their environments by becoming _____ complex over time.
It is true that evolution occurs when new traits accumulate, but it is false that evolution only occurs when new traits accumulate. Evolution can occur when traits are lost. Some lineages adapt to their environments by becoming less complex over time.
Evolution is a process of change in the inherited traits of a population over time. This change can occur through the accumulation of new traits, but it can also occur through the loss of traits.
For example, some lineages of cave-dwelling animals have lost their eyesight over time because it was not necessary for survival in their environment. Similarly, some lineages of animals have become less complex over time, such as parasites that have lost certain body structures because they are not needed in their host-dependent lifestyle. Therefore, it is important to understand that evolution can occur through both the accumulation and loss of traits.
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(b) It is possible to remove the cell wall of a plant cell by using an enzyme. Suggest and explain what would happen if a cell that had been treated in this way, and also an untreated cell, were both put into distilled water for an hour. (c) Cells are taken from one plant, treated with the enzyme described in (b), and then grown on a culture medium. There, each of these cells divides to form a group of cells. Each group of cells then develops into a new plant. (1) State the type of division that the nuclei of these cells have undergone. (il) Suggest and explain a possible commercial use of this procedure.
Answer:1) type of cell division= mitosis
2) commercial use of enzyme (likely cellulase) is in the textiles industry
Explanation:
somatic cells undergo mitosis, sex cells undergo meiosis
cellulase would soften the raw materials for processing in the textile industry
Which is an example of physical weathering? (1 point)
A. wind blowing off bits of a rock over time
B. limestone in rock dissolving when acid rain flows across it
C.bits of rock rusting when exposed to oxygen and water
D.oxidation of certain metals in rock
Answer:
B?
Explanation:
Can someone pleaseee help me with this It’s urgent! It’s multiple choice! Plsssss help (20 points)
Answer:
Explanation:
8/c
9/c
10/c
12/b
13/a
14/b
and i am not sure about 12/9
Which of the following is/are a characteristic of skeletal muscle? Check all that apply. a. Overlapping thin and thick filaments b. Striations c. Overlapping myosin and actin proteins d. Excitability e. Involuntary
The characteristics of skeletal muscle are as follows:
a. Overlapping thin and thick filaments: This is true. Skeletal muscle fibers contain overlapping thin (actin) and thick (myosin) filaments, which slide past each other during muscle contraction.
b. Striations: This is true. Skeletal muscle exhibits a striped or striated appearance due to the organized arrangement of the thin and thick filaments.
c. Overlapping myosin and actin proteins: This is true. As mentioned earlier, skeletal muscle fibers contain overlapping myosin and actin proteins in the form of thin and thick filaments.
d. Excitability: This is true. Skeletal muscle is excitable, meaning it can respond to stimuli by generating electrical impulses called action potentials. This allows for voluntary muscle control.
e. Involuntary: This is false. Skeletal muscle is under voluntary control, meaning it is consciously controlled by the individual. Involuntary muscles, such as smooth muscles or cardiac muscles, are not consciously controlled.
Therefore, the correct characteristics of skeletal muscle are:
a. Overlapping thin and thick filaments
b. Striations
c. Overlapping myosin and actin proteins
d. Excitability
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What is a model that uses DNA comparisons to see how long two different organisms have been evolving independently from each other?A. molecular clock hypothesisB. phylogenetic treeC. cladogramD. evolutionary tree
A model that uses DNA comparisons to see how long two different organisms have been evolving independently from each other is referred to as molecular clock. It makes use of a genetic material that go through mutation. This is used to calculate the time of evolution between two different organisms.
A phylogenetic tree is also called as evolutionary tree. It is a diagram used to illustrate the lines of evolutionary descent of various species from a common ancestor. A cladogram is is a diagram that illustrate the relationships of various froups of taxa.
Answer - A. molecular clock hypothesis
in a Pp x Pp cross what is the probability that offspring will inherit two p alleles?
Answer:
Explanation:
each offspring of a Pp× Pp cross has a 50% chance of receiving either allele from either parent. So, the probability of inheriting two p alleles is 1/2 1/2. This equals 1/4.
How does acid rain cause animals to suffer?
their habitats are destroyed by the severe weather rain can bring
animals can only find food in dry weather so they often go hungry during rain
O acid rain causes their to be less plants for animals to eat
acid rain is only a problem for humans
Acid rain harms numerous animals and plants. Thus, the food web suffers. Acid rain kills lake phytoplankton. As a result, phytoplankton-dependent insects die. Therefore, option (C) is correct.
What is acid rain?Acid rain, also known as acid deposition, is an all-encompassing word that refers to any form of precipitation that contains acidic components, such as sulfuric or nitric acid, and that falls to the ground from the atmosphere in either a wet or dry form. Acid precipitation can take several forms, such as rain, snow, fog, hail, or even dust.
Rain that contains acid can provide significant challenges for a wide variety of flora and fauna. As a direct consequence of this, the entire food web is disrupted. For instance, phytoplankton in lakes might perish as a direct result of acid rain. As a result of there being less phytoplankton available, the insects, which get their nutrition from it, are starting to starve to death.
Therefore, option (C) is correct.
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Consider an individual with red-green colour deficiency.What is the minimum possible number of the child's GRANDPARENTS who were also red-green colour deficient?*note* Please enter numbers only - (0-4)
As the character is recesive and humans are diploid, the idividual must have both alleles with the information for red-green colour deficiency if she is a woman, or the only allele with that information if he is a man; this is because the gene for colour deficiency is located on the sexual chromosome X.
Therefore, if both grandmothers have the allele for colour deficiency but they have a heterozygous genotype, neither of the grandparets would have colour blindness, even though, they could give their offspring the red-green colour deficiency allele.
To sum up, 0 grandparents can be red-green colour deficient (but at least one must have the corresponding allele) and have a grandson/daughter with red-green colour deficiency.
PLEASE HELP ME!!!! I'M ALMOST OUT OF TIME!!
Answer:
Impact metamorphism-3
Dynamic metamorphism-2
contact metamorphism-1
regional metamorphism-4
List all vessels a RBC could travel through starting in the left finger and ending in the spleen (choose only one possible path - just write heart when passing though heart and lungs when passing through the lungs).
Arterioles -> Capillaries -> Venules -> Veins ->Inferior Vena Cava -> Right Atrium -> Right Ventricle -> Pulmonary Artery -> Lungs -> Pulmonary Veins -> Left Atrium -> Left Ventricle -> Aorta -> Splenic Artery -> Spleen.
Arterioles are small, muscular blood vessels that branch out from arteries. They play a crucial role in regulating blood flow and blood pressure within the circulatory system. Arterioles receive oxygenated blood from arteries and deliver it to capillaries. They have the ability to constrict or dilate, which helps control the amount of blood flowing into capillary beds. By adjusting their diameter, arterioles can regulate blood flow to specific tissues and organs, ensuring an adequate oxygen and nutrient supply based on body's demands.
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Predict the amount of genetic variation that would result from crossing over if maternal and paternal chromatids had the same alleles for every gene
The amount of genetic variation that would result from crossing over if maternal and paternal chromatids had identical alleles for every gene will be the same, i.e., no variation occurs at all.
What is crossing over or chromosome recombination?The process of crossing over or chromosome recombination refers to the exchange of genetic material between non-sister chromatids during meiosis, which is known to increase the genetic variation in the resulting gametes.
Therefore, with this data, we can see that crossing over may increase the genetic variation in the gametes but it requires different alleles.
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Does anyone know this? I picked arkansa and North Carolina
Graduation rates vary from state to state in the United States. Based on the statistics for the two states you selected, identify at least one potential reason for this variance.
Answer:
Poverty rates
Explanation:
A lower income city, town, or even region might have less money to spend on school and education. So kids don't feel nessisary or even bad to go to school as they face going broke and running out of food, kids work because their parents work themselves into injuries or can't work at all. Kids see school as 7 hours of money gone and loss of providing food for their family. So they drop out to stay alive.
Imagine you are a systematist who has discovered an unfamiliar
animal. Which of the following observations about the animal will best
help you find its taxonomic classification?
The animal has an unpleasant temperament.
The animal has sharp, pointed teeth.
The animal was found near a herd of deer.
The animal bit you.
Answer:
1) taxonomy
2) species
3) the animal has sharp, pointed teeth
4) the current taxonomic system is based on the Linnaean system
5) he only had two kingdoms, animals and plants
Explanation:
did the quick check
The observation about the animal that will be helpful in finding its taxonomic classification is B. The animal has sharp, pointed teeth.
Taxonomy refers to the science of the classification of organisms into groups. The classification is based on the characteristics that the organisms have.
Therefore, in a situation whereby the person is unfamiliar with an animal, the shape of the teeth of the animal can be used for its classification.
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How might designer children affect the population of humans on earth?
10 points for each answer! I will report absurd answers. I know the answer but just need different input. Thanks.
How does the loss of arctic ice affect the human population?
Answer:
The loss of Arctic ice will most likely lead to further climate change. Climate change affects plants, animals, the weather, commerce, etc. All of these things affect our food supplies.
It will also contribute to sea-level rise, both as it melts into the oceans and as the warming water expands.
I am no expert but I hope this helps!
Explanation:
why it is equally important to adjust the iris diaphragm and condenser while observing specimens under the microscope
The iris diaphragm and condenser are important components in a microscope that control the amount of light reaching the specimen, and adjusting them ensures a clear and well-lit image.
A microscope is a tool used to observe specimens in detail, and to do so, it is important to have proper lighting.
The iris diaphragm and condenser are two components in a microscope that control the amount of light reaching the specimen. The iris diaphragm is a adjustable opening in the light path that regulates the amount of light that enters the microscope, while the condenser focuses the light onto the specimen.
By adjusting the iris diaphragm, the amount of light entering the microscope can be controlled, making it easier to view delicate specimens that might be damaged by too much light. The condenser, on the other hand, focuses the light onto the specimen, providing a bright and well-lit image, which is crucial for viewing details.
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Which structures are found in all prokaryotic cells?
Answer: the S layer, Cell wall, periplasmic space, plasma membrane which is where the flagellum is attached to, ribosomes, inclusion bodies, cytoplasmic matrix, and a nucleoid where the DNA is kept along with other genetic material.
The structures found in all prokaryotic cells are as follows:
Cell wall
Cell membrane.
Capsule
Flagella
Ribosomes
Plasmids
What are prokaryotic cells?
Prokaryotic cells are cells that do not contain membrane-bound nucleus and organelles.
Unlike eukaryotic cells, prokaryotes possess an uncovered genetic material as there is no nucleus.
However, other organelles are present in prokaryotic cells and are as follows:
Cell wall
Cell membrane
Capsule
Flagella
Ribosomes
Plasmid
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bones of trained athletes may be visibly thicker and heavier than those of nonathletes because
Bones of trained athletes may be visibly thicker and heavier than those of nonathletes because of a phenomenon known as bone remodeling.
Bone remodeling is the process by which bone tissue is continuously broken down and rebuilt in response to mechanical stress, such as that which occurs during exercise. Regular exercise and weight-bearing activities can stimulate bone remodeling and lead to an increase in bone density, thickness, and strength.
In athletes, particularly those who engage in weight-bearing activities such as running, jumping, and weightlifting, bone remodeling can lead to adaptations in the structure and composition of bone tissue.
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Scientist have inferred the structure of Earth's interior mainly by analyzing
A. The Moon's Interior
B. The Moon's Composition
C. Earth's Surface Features
D. Earth's Seismic Data
Answer:
Earth's seismic data
Explanation:
Which of the following term does NOT involve multiple loci. a. Complex traits b. Independent assortment c. Haplotype Recombinant d. Random segregation Trisomy 21. Robertsonian translocation and PKU syndrome are three human phenotypes due to DNA changes in different scales. Which of the following shows the order of DNA alterations, in large to small scales, that cause these phenotypes? a. Robertsonian translocation > trisomy 21 PKU syndrome
b. None of other answers is correct.
c. trisomy 21 > Robertsonian translocation > PKU syndrome d. PKU syndrome > trisomy 21 > Robertsonian translocation
e. PKU syndrome > Robertsonian translocation trisomy 21
1. c. Haplotype Recombinant.
2. c. trisomy 21 > Robertsonian translocation > PKU syndrome.
1. The term that does not involve multiple loci is c. Haplotype Recombinant. Haplotype refers to a set of genetic variations on a single chromosome, while recombinant refers to the reshuffling of genetic material during meiosis. It does not inherently involve multiple loci, but rather the arrangement of alleles at a single locus.
2. The correct order of DNA alterations, in large to small scales, that cause the phenotypes mentioned is c. trisomy 21 > Robertsonian translocation > PKU syndrome. Trisomy 21 refers to the presence of an extra copy of chromosome 21, resulting in Down syndrome, which is a large-scale alteration involving a whole chromosome. Robertsonian translocation involves the fusion of two acrocentric chromosomes, often resulting in rearrangements and genetic disorders. Phenylketonuria (PKU) syndrome, on the other hand, is caused by alterations in a single gene, resulting in the inability to metabolize phenylalanine. Therefore, the order from large-scale to small-scale DNA alterations is trisomy 21, Robertsonian translocation, and PKU syndrome.
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Explain the Frank-Starling law of the heart.
Make sure to give a short, explanation of the Frank-Starling law and the role of stretch on
the cardiac contractile tissue has on the force of contraction. You should then explain
how this property allows for the matching of venous return and stroke volume. Some
important topics to consider as you answer this question are end-diastolic-volume (EDV),
end-systolic-volume (ESV), venous return, preload, afterload, and Starling curves.
The Frank-Starling law of the heart states that the force of contraction of the cardiac muscle is directly related to the initial length or stretch of the muscle fibers. In simpler terms, when the cardiac muscle is stretched, it contracts more forcefully.
The cardiac muscle fibers have an inherent property that enables them to generate greater force when they are stretched. This property is due to the increased overlap of actin and myosin filaments within the muscle fibers when they are elongated. When the muscle fibers are stretched, the actin and myosin filaments have a more optimal arrangement, allowing for stronger and more efficient muscle contractions.
Now, let's discuss how the Frank-Starling law allows for the matching of venous return and stroke volume. The stroke volume refers to the amount of blood pumped out of the heart with each heartbeat, while venous return refers to the amount of blood flowing back to the heart from the veins.
According to the Frank-Starling law, the initial length or stretch of the cardiac muscle fibers, known as the end-diastolic volume (EDV), determines the force of contraction. When there is an increase in venous return, more blood fills the heart during diastole, leading to an increase in the EDV. This increased volume stretches the muscle fibers of the heart.
The stretched muscle fibers, in turn, generate a more forceful contraction during systole, leading to a larger stroke volume. This increased stroke volume effectively matches the increased venous return, maintaining the balance between the amount of blood entering the heart and the amount of blood pumped out.
It's important to note that the Frank-Starling law is influenced by two other factors: preload and afterload. Preload refers to the degree of stretch of the cardiac muscle fibers before contraction, primarily determined by the volume of blood in the ventricles at the end of diastole. Afterload, on the other hand, refers to the resistance the heart must overcome to eject blood during systole, usually represented by the pressure in the aorta.
The relationship between preload, afterload, and stroke volume is depicted by the Starling curves. These curves illustrate how changes in preload (EDV) can affect stroke volume. When preload increases, the Starling curve shifts upward, indicating an increase in stroke volume. However, if afterload increases (such as in conditions like hypertension), the curve shifts downward, reducing the stroke volume.
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can someone please help me
WILL MARK YOU BRAINLIEST !!
Answer:
The answer is A.Primary succession
Explanation:
Primary succession is an ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
Answer:
a. primary succesion
Explanation:
in a consecutive sample of patients referred to a treatment program for substance abuse after TBI, nearly 20% of patients had been light drinkers or abstainers prior to the injury, and showed heavy use after injuryZ.M. Weil et al. / Neuroscience and Biobehavioral Reviews 62 (2016) 89–99 91
Please help to formulate a well-sculpted statement/point.
Statement: A significant proportion of patients referred to a substance abuse treatment program after Traumatic Brain Injury (TBI) experienced a transition from light drinking or abstinence to heavy alcohol use following the injury.
The statement highlights a finding from a study by Z.M. Weil et al. published in the journal Neuroscience and Biobehavioral Reviews in 2016. The study investigated patients who had undergone treatment for substance abuse after TBI. The statement indicates that approximately 20% of these patients had a history of being light drinkers or abstainers before their brain injury. However, after the injury, they exhibited a shift toward heavy alcohol use.
This finding is significant as it suggests a link between TBI and changes in alcohol consumption patterns. The transition from light drinking or abstinence to heavy alcohol use may be influenced by neurological and psychological factors associated with brain injury. Understanding this relationship can have implications for the development of targeted interventions and support for individuals who have experienced TBI to prevent or address substance abuse issues.
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