Answer: Option C
Explanation:
The statement that is not a difference between prokaryotic and eukaryotic cells is as follows: prokaryotic cells cannot make their own proteins.
What are prokaryotic and eukaryotic cells?Prokaryotic cells are cells that do not possess a membrane-bound nucleus or organelles while eukaryotic cells possess a membrane-bound nucleus.
Prokaryotic and eukaryotic cells possess several differences as follows:
Prokaryotic cells are found in the domains Eubacteria and Archaea.Eukaryotic cells have organelles for processes like respiration or photosynthesisEukaryotic cells are generally ten times larger than prokaryotic cellsTherefore, the statement that is not a difference between prokaryotic and eukaryotic cells is as follows: prokaryotic cells cannot make their own proteins.
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Alanine racemase is a bacterial enzyme that converts L‑alanine to D‑alanine, which is needed in small amounts for the bacterial cell wall. The active site of alanine racemase includes a Tyr residue with a value of 7.2.[Math Processing Error] The of free tyrosine is 10.[Math Processing Error] The altered pKa of this residue is due largely to the presence of a nearby charged amino acid residue.
Which amino acid could lower the pKa of the neighboring Tyr residue and how?
Group of answer choices
The negative charge in a nearby Glu residue could stabilize a deprotonated Tyr residue.
The positive charge in a nearby Arg residue could destabilize a deprotonated Tyr residue.
The positive charge in a nearby Lys residue could stabilize a deprotonated Tyr residue.
The negative charge in a nearby Asp residue could destabilize a deprotonated Tyr residue.
The correct option is "The negative charge in a nearby Glu residue could stabilize a deprotonated Tyr residue." Alanine racemase is a bacterial enzyme that converts L-alanine to D-alanine, which is needed in small amounts for the bacterial cell wall.
The active site of alanine racemase includes a Tyr residue with a value of 7.2. When the Tyr residue is deprotonated, it becomes negatively charged, and the nearby Glu residue with its negative charge can help stabilize this negative charge on the Tyr residue, thus lowering the pKa value.
The other answer choices are incorrect because they either involve a positive charge that would destabilize a deprotonated Tyr residue. .
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what is the mRNA of GAGATTTACCGTAGC
Answer:
CUCUAAAUGGCAUCG
Leu-Ter-Met-Ala-Ser
Explanation:
this should be correct, in mRNA A codes for U, T codes for A, C codes for G and G codes for C. Hope this helps
the phagocytosis of antigens can induce a(n) ________ response in the surrounding tissues if appropriate.
The phagocytosis of antigens can induce an inflammatory response in the surrounding tissues if appropriate. This response is an important aspect of the immune system's defense against pathogens and foreign substances.
The phagocytes such as macrophages and neutrophils engulf antigens, they release cytokines and other signaling molecules that activate other immune cells and recruit them to the site of infection or tissue damage. This leads to the recruitment of more phagocytes and other immune cells to the area, which helps to eliminate the antigen and any accompanying infection. However, if the phagocytosis of antigens occurs inappropriately or in excessive amounts, it can lead to chronic inflammation and tissue damage. This can occur in autoimmune diseases where the immune system mistakenly attacks the body's own tissues or in chronic infections where the immune response is unable to eliminate the pathogen and leads to ongoing tissue damage. In summary, the phagocytosis of antigens can induce an inflammatory response in the surrounding tissues if appropriate, but it is important for the immune system to regulate this response to prevent excessive inflammation and tissue damage.
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how can a rising tide be stopped?
Answer:
Building seawalls
Explanation:
one solution that cities employ to decrease flooding from tides and Storm is constructing seawalls.
help me label this pls i can't find it anywhere
The provided image is an image of human cell showing different cell organelles. These are the Golgi complexes, mitochondria, Cytoplasm, Endoplasmic reticulum (ER), nucleus, lysosome and plasma membrane respectively.
How can be the image pointed from a to f as asked?
a. Golgi complexes
b. Mitochondria
c. Cytoplasm
d. Endoplasmic reticulum (ER)
e. Nucleus
f. Lysosome
g. Plasma membrane.
All are the organelles of the human cell embedded in the cytoplasm and surrounded by the plasma membrane. Here the endoplasmic reticulum can be of two type, one is the rough endoplasmic reticulum (RER) and another is the smooth endoplasmic reticulum (SER).
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The answer is a. Golgi complexes
b. Mitochondria
c. Cytoplasm
d. Endoplasmic reticulum (ER)
e. Nucleus
f. Lysosome
g. Plasma membrane.
What are Golgi complexes used for?Proteins and lipid (fat) molecules are prepared for usage both within and outside of the cell by the Golgi complex. A cell organelle is the Golgi complex. also known as the Golgi body and apparatus.
In cells that produce and secrete significant amounts of chemicals, the Golgi apparatus tends to be bigger and more numerous; for instance, the immune system's plasma B cells, which release antibodies, have notable Golgi complexes.
The Golgi complex is where?The nucleus and the Golgi are in close proximity. Perinuclear bodies are what they're called, and the endoplasmic reticulum is also not far from them. Additionally, proteins that exit the endoplasmic reticulum enter the Golgi for additional processing.
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Describe what the body needs to survive. Include the 3 major categories, in detail, their primary function(s), and their metabolism. Then explain 1 issues that would result if the body's metabolic requirements are not met. What role do metabolites have with fluid regulation?
The body needs various nutrients and substances to survive. These nutrients can be classified into three categories: carbohydrates, proteins, and fats.
Below is a detailed description of the three major categories and their metabolism.
Carbohydrates: Carbohydrates are one of the essential nutrients needed by the body to survive. Carbohydrates are stored in the body as glycogen and are primarily used as a source of energy. Carbohydrates are metabolized into glucose, which is then transported throughout the body by the blood. Carbohydrates are metabolized through glycolysis, a process that occurs in the cytoplasm of the cells. If the body's metabolic requirements for carbohydrates are not met, it can result in hypoglycemia.
Proteins: Proteins are another essential nutrient needed by the body to survive. Proteins are primarily used for building and repairing body tissues and organs. Proteins are metabolized into amino acids, which are then transported throughout the body by the blood. Proteins are metabolized through a process called protein synthesis, which occurs in the ribosomes of the cells. If the body's metabolic requirements for proteins are not met, it can result in muscle atrophy and other health issues.
Fats: Fats are a necessary nutrient needed by the body to survive. Fats are stored in the body as adipose tissue and are primarily used for energy storage. Fats are metabolized into fatty acids, which are then transported throughout the body by the blood. Fats are metabolized through a process called beta-oxidation, which occurs in the mitochondria of the cells.
If the body's metabolic requirements for fats are not met, it can result in a deficiency of essential fatty acids.
Metabolites have an important role in fluid regulation. Metabolites are the byproducts of metabolic processes, and they play a crucial role in regulating fluid balance in the body. Metabolites such as urea and ammonia are excreted from the body through urine, which helps to regulate fluid levels in the body. Additionally, metabolites such as lactic acid and carbon dioxide help to regulate the pH levels of the body's fluids, which is important for maintaining optimal health.
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Explain how transmission,
absorption, and reflection
cause objects to be
transparent, translucent, or
opaque?
Answer:
Transparency is caused by the transmission of light waves. If the vibrational energy of a light wave is passed through the object, then the object appears clear, or transparent. If the energy only causes vibrations in the surface before reflecting off the object, then the object appears opaque.
A researcher investigated two types of diffusion: simple diffusion and facilitated diffusion. If particles move through the cell membrane by simple diffusion, the rate is unlimited. If particles move through the cell membrane by facilitated diffusion, then the rate is limited by number of protein channels. The results are shown in the graph above. The independent variable is the -
Unfortunately, there is no graph attached to your question. Please provide more information or attach the graph so I can better answer your question.
What is a membrane ?A membrane is a thin, selective barrier that separates two phases or compartments in a system. In biology, membranes are essential components of cells and organelles, which serve to protect and regulate the internal environment of the cell, while also facilitating the exchange of materials with the external environment.
What is a cell ?A cell is the basic unit of life and the smallest unit of an organism that can carry out all the functions of life. All living organisms, whether they are unicellular composed of a single cell or multicellular (composed of many cells, are made up of cells.
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WILL GIVE 20 POINTS AND BRAINLIEST PLS HURRY
In order for a scientific explanation to be valid, it MUST be based on evidence from _[blank]_.
a. hypotheses of scientific experiments
b. a credible scientific journal
c. the latest scientific research
d. observations of the scientific investigation
Answer:
a. hypotheses of scientific experiments
Explanation:
structures in organisms that used oxygen well were
Organisms possess specialized structures for efficient oxygen utilization. Gills in aquatic organisms, lungs in terrestrial vertebrates, and tracheal systems in insects enable oxygen exchange. Birds have lungs and air sacs for efficient respiration. Hemoglobin in red blood cells transports oxygen. These adaptations optimize oxygen utilization for survival.
Structures in organisms that are well-adapted for efficient oxygen utilization include:
Gills: Gills are respiratory organs found in aquatic organisms such as fish. They have a large surface area and are composed of thin filaments or plates with numerous blood vessels. Gills allow for efficient extraction of oxygen from water by facilitating the exchange of gases.Lungs: Lungs are respiratory organs found in terrestrial vertebrates, including mammals, birds, and reptiles. Lungs consist of a complex network of bronchial tubes and millions of tiny air sacs called alveoli. The large surface area and the thin walls of the alveoli facilitate the exchange of oxygen and carbon dioxide between the air and the bloodstream.Tracheal System: Insects have a network of tubes called tracheae that deliver oxygen directly to cells. The tracheal system enables efficient oxygen transport throughout the body, allowing insects to have a high metabolic rate and perform activities such as flying.Spiracles: Spiracles are small openings found on the surface of some insects. They allow for the exchange of gases between the external environment and the tracheal system. By opening and closing the spiracles, insects can control the flow of air and regulate oxygen uptake.Lungs and Air Sacs (in birds): Birds have a unique respiratory system that includes both lungs and air sacs. Air sacs act as bellows, ensuring a unidirectional flow of air through the lungs, allowing for efficient oxygen uptake and carbon dioxide removal. This adaptation is particularly important for the high metabolic demands of flying.Hemoglobin: Hemoglobin is a protein found in red blood cells that binds to oxygen molecules. Its structure enables efficient oxygen transport in the bloodstream, ensuring oxygen is effectively delivered to tissues throughout the body.These structures and adaptations are examples of how organisms have evolved to maximize their oxygen utilization, allowing them to thrive in their respective environments.
somatic cells in animals differ from gametes in that somatic cells __________.
Answer:
contain two sets of each of the chromosome types
Explanation:
Somatic cells are 2n (diploid) so they contain two copies of each chromosome whereas gamete cells are n so they only have 1 of each chromosome.
all the cells in a multicellular organism are the same. True or False
Answer:
false
hope this helps
have a good day :)
Explanation:
express your opinion on how people use the processes of colonization and selection to obtain various products!
Answer:
It is my opinion that the processes of colonization and selection have been used by people throughout history to obtain a wide variety of products. Colonization involves the expansion of one group of people into an area that is occupied by another group, often with the goal of extracting resources or establishing control over the land and its inhabitants. Selection, on the other hand, involves the deliberate breeding or cultivation of certain individuals or traits in order to produce desired characteristics in a population.
I believe that these processes have often been used in ways that are unethical and exploitative, with the colonizers and selectors prioritizing their own interests and goals over the rights and well-being of the people and environments they are impacting. In many cases, the colonizers and selectors have imposed their own systems and values on the people and land they have encountered, disrupting and damaging existing cultures and ecosystems.
However, I also recognize that these processes can be used in more responsible and sustainable ways. For example, colonization can be done in a way that respects the rights and traditions of the indigenous people, and selection can be used to improve the quality and productivity of crops and livestock without causing harm to the environment. It is important for people to consider the potential consequences of their actions and to strive for a more equitable and sustainable use of these processes.
Power is measured in _______?
Answer:
joules
Explanation:
i think
A scientist studying fossils, found that identical freshwater reptiles about 1 meter long were found in both South America and Africa. Since, these animals couldn’t have swum hundreds of miles across the Atlantic Ocean, what is the best explanation for how fossils of this creature were found in both places?
options:
A:The animals evolved to become the same exact species even though they lived in different environments.
B:The animals walked from Africa to South America because there used to be large valley that separated the continents, which has now been filled by the Atlantic Ocean.
C:The ancestors of this creature used to be able to fly. They flew from Africa to South America and then evolved into the freshwater reptiles the scientist discovered.
D:South America and Africa used to form a single landmass that later split apart. The fossils found on both continents shared a single habitat.
GIVE BRAINLIEST IF RIGHTTTTT
Answer:
D
Explanation: this would make sense because they could not have evolved to become the same. Evolution does not work like that . The animals would not walk or fly they are water creatures and if they did that they would not evolve back down to fish .
how is the cell membrane important for homeostasis
A sebaceous (oil) gland cell of the skin must completely rupture to release its secretory products. thus, this type of gland is considered to be a __________.
The sebaceous gland is considered to be a holocrine gland.
A sebaceous gland is a type of exocrine gland that produces and releases sebum, an oily substance that helps lubricate the skin and hair. Unlike other exocrine glands that release their secretory products through ducts, sebaceous glands release their secretory products by completely rupturing the cell. This process is called holocrine secretion. The sebaceous gland cell fills up with sebum until it becomes so distended that it bursts open, releasing the sebum and any remaining cell debris onto the skin surface. This process allows for the continuous production and release of sebum to keep the skin moisturized.
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Order the events that occur during DNA replication. DNA ligase seals the gaps between new DNA and Okazaki fragments. RNA primase synthesizes a primer which attaches to the initiation point. DNA helicase unwinds the DNA. DNA polymerase removes RNA primers and replaces them with DNA nucleotides. DNA polymerase extends the primer by adding nucleotides that are complementary to the template strand. ↓ ↓ ↓ ↓
Answer:
DNA helicase unwinds the DNA.
RNA primase synthesizes a primer which attaches to the initiation point.
DNA polymerase extends the primer by adding nucleotides that are complementary to the template strand.
DNA polymerase removes RNA primers and replaces them with DNA nucleotides.
DNA ligase seals the gaps between new DNA and Okazaki fragments. Explanation:
Mr. Buchanan enjoys bird watching. He feeds several species of birds in his backyard each winter. He has birdhouses and feeders attached to his trees. When he fills them with feed, birds fly in and sit on the power lines. What type of behavior is shown by these. birds?
A. Learned
B. Innate
C. Dangerous
D. Instinctive
Answer: D: Instinctive.
Explanation:
The behavior shown by the birds is instinctive.
Instinctive behavior is a type of behavior that is inherent or innate, meaning that it is not learned through experience or practice. Instinctive behaviors are usually associated with survival, such as finding food and shelter, and they are often triggered by certain stimuli in the environment.
In this case, the birds are exhibiting an instinctive behavior by flying in and sitting on the power lines when the feeders are filled. They are attracted to the food and are following their natural instincts to find and consume it. This behavior is not learned or acquired through experience, but rather is a natural response to the presence of food.
Investigators examined the expression of transporter mRNA and protein produced in zebrafish homozygous for each of the alleles and found the results summarized below (+ + peresent, - = abseny) Does the allele associated with light color appear to be altering transcription or translation? Why?
Yes, the allele associated with light color appear to be altering transcription or translation, because light-color zebra fish are recessive to the dark color.
The protein we can say were missing in light of the fact that mRNA which is being expected for protein combination it was absent. Assuming the allele had modified interpretation, mRNA which is practical would have been available however in a similar case, the protein will in any case be missing.
Axonal courier RNA (mRNA) transport serves to spatially confine protein combination to the axon and development cone. The component of transport of mRNA-protein (mRNP) edifices from record destinations to atomic pores has been the subject of many investigations.
The atomic system for axonal mRNA transport includes the acknowledgment of zipcodes by RNA-restricting proteins, get together into RNA granules, and transport along the microtubules and actin fibers in the axon and development cone.
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The circuitry of the autonomic system allows for control in activation. The characteristic that allows a small number of preganglionic cells to stimulate a large number of postganglionic cells is
Answer
The characteristic that allows a small number of preganglionic cells to stimulate a large number of postganglionic cells is called Divergence
Explanation:
Because In a diverging circuit, a single neuron synapses with more than one postsynaptic cell and Each of these synapses with additional number of cells thus allowing for one neuron to stimulate up to a very large number of cells.
4. The following statements describe which phylum of animals? They have narrow, thread-like bodies that are not segmented, pointed at both ends, bilaterally symmetrical and round in cross-section. They have no circulatory system but they do have a complete digestive system with both mouth and anus.
A Mollusca
B Annelida
C Echinodermata
D Nematoda
Annelida have narrow, thread-like bodies that are not segmented, pointed at both ends, bilaterally symmetrical and round in cross-section.
Thus, The Phylum Annelida is made up of segmented worms. Earthworms and their cousins, leeches, and a sizable number of polychaetes, predominantly marine worms, are all members of this class.
The segmented bodies of annelids make them easy to identify. Earthworms and leeches have fewer bristles on their bodies than polychaetes, which is Greek for "many bristles."
Segmented worms are a member of the phylum Annelida. These creatures can be found in freshwater, marine, and terrestrial settings, but they require moisture to survive, especially in terrestrial habitats.
Thus, Annelida have narrow, thread-like bodies that are not segmented, pointed at both ends, bilaterally symmetrical and round in cross-section.
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What forms of hydrogen and oxygen are MOST
common on Earth?
A. Solid
B. Gas
C. Liquid
D. Plasma
Answer:
B
Explanation:
Hydrogen and Oxygen are the most abundant gases, being the first, and third most abundant.
Hope this helps, googIe only wanted to give me explanations on why Hydrogen is the most common element in the universe :/
The form of hydrogen and oxygen that are most common on Earth's surface is known as Gas. Thus, the correct option for this question is B.
What is the difference between hydrogen and oxygen?The difference between hydrogen and oxygen is that oxygen significantly contains eight electrons and eight protons while hydrogen contains only one electron and one proton. Oxygen is present in 21% of the earth's atmosphere, while hydrogen is present in 0.03% which is negligible.
According to the context of this question, oxygen is the first and most abundant gas in the earth's atmosphere and hydrogen is the third most abundant gas.
They are also present in the liquid and solid states but are in negligible amounts when treated with abnormal conditions like lower temperature and freezing.
Therefore, gaseous forms of hydrogen and oxygen are most common on Earth's surface. Thus, the correct option for this question is B.
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what is the probability of obtaining trisomy progeny if nondisjunction happens in meiosis i of one gamete type, assuming normal segregation in the other gamete type?
If nondisjunction occurs in meiosis I, all four meiotic products are chromosomally defective.
Two of the four meiotic products will have two copies of the chromosome implicated in the nondisjunction event, and two of the four meiotic products will have no copies of that chromosome.
If nondisjunction happens during Meiosis I in humans, two gametes with additional chromosomes (24 chromosomes each, or n+1) are generated, and two gametes without a chromosome are formed (22 chromosomes each, n-1). The older the woman, the greater the likelihood of having a kid with Down syndrome. Nondisjunction can result in sperm gametes with an incorrect number of chromosomes. Trisomy 21 is usually caused by a nondisjunction during meiosis.
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a higher cholesterol content in cell membranes increases membrane fluidity at low temperatures because: group of answer choices cholesterol's fused ring structure prevents close packing of long-chain fatty acids in adjacent lipids. cholesterol's polar head group can form extensive interactions with water molecules. cholesterol increases hydrogen bonding between long-chain fatty acids in adjacent lipids. cholesterol's fused ring structure is highly flexible.
The kinked tail of cholesterol, which disrupts lipid packing, is to blame for its effects at low temperatures. Hence, cholesterol can be felt as a buffering particle in the layers of beast cells that forestalls unexpected changes in film ease over a scope of temperatures.
At high temperatures, cholesterol stabilizes the membrane and raises its melting point, whereas, at low temperatures, it intercalates between the phospholipids and prevents them from clustering together and stiffening. This makes cholesterol a bidirectional regulator of membrane fluidity.
Another important factor in determining membrane fluidity is cholesterol: at high temperatures, cholesterol acts to balance out the cell layer and increment its liquefying point; It inserts into phospholipids and prevents them from interfering with one another to prevent aggregation at low temperatures.
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Fact for each one.
Aquatic Ecosystems
Estuaries
Features/Facts:
-
-
-
Biotic factors:
-
-
-
Abiotic factors:
-
-
-
Intertidal
Features/Facts:
-
-
-
Biotic factors:
-
-
-
Abiotic factors:
-
-
-
Arctic
Features/Facts:
-
-
-
Biotic factors:
-
-
-
Abiotic factors:
-
-
-
Answer:
The answer is down below.
Explanation:
Estuaries
-More than 80 percent of all fish and shellfish species use estuaries as primary habitat or as a spawning or nursery ground.
-Estuaries are often called the “nurseries of the sea”.
-Estuaries and their surrounding wetlands are bodies of water usually found where rivers meet the sea.
Abiotic factors
In an estuarine ecosystem, these factors are light, oxygen, water, nutrients, temperature, salinity, and space. So just divide these into three.
Biotic factors
These include plants and animals such as shrimp, fish, and oysters
Examples of______are peptide bonds, C-H bonds, C-C bonds etc.
Examples of covalent bonds are peptide bonds, C-H bonds, C-C bonds, etc.
Covalent bonds are a type of chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
There are two main types of covalent bonds: polar and non-polar. Polar covalent bonds occur when the electrons are shared unequally between the two atoms, creating a partial positive and partial negative charge on each atom. Non-polar covalent bonds occur when the electrons are shared equally between the two atoms, resulting in no partial charges. Covalent bonds play an important role in many biological processes and are essential for the structure and function of many molecules.
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Segmented worms with bodies are _____.leechesscallopsearthwormsnautiluspolychaeta
Annelida are worms whose bodies are divided into similar rings or segments. they are classified into three groups, Polychaeta, Oligochaetes, Hirudine, and Achaea.
Polychaeta is the bigger group in the Annelida, and everyone has equal segments.
Leeches are segmented parasitic predatory worms in the Hirudinea subclass, in the Annelida phylum.
The scallop is a name of various species and does not belong to the Annelida phylum.
The earthworm is a terrestrial invertebrate that belongs to the Annelida Phylum.
Nautilus is from the Mollusca phylum and does not belong to the Annelida.
The subphylum Polychaeta, the leaches, and the earthworm are the ones that match the description of segmented worms
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Main goal of AEROBIC RESPIRATION? (Multiple Choice)
Answer:
b respiration is breathing, the main goal of aerobic respiration has nothing to do with light energy
Explain whether gas exchange occurs more efficiently in organisms with closed circulatory systems or open circulatory systems and why?
Answer:
it's more efficient in a closed circulatory because there is nowhere to escape
Explanation: