phosphorylation is an important form of posttranslational modification for intracellular proteins. which one of the following amino acids is not a target for phosphorylation?
Answers
Phenylalanine is the amino acid which is not a target for phosphorylation which is an important form of posttranslational modification for intracellular proteins.
Physiologically, phosphorylation activates PheH even at low concentrations of phenylalanine. Activation of protein kinase A by cAMP is a general signal that activates catabolism, and hydroxylation of phenylalanine to tyrosine is the first step in that catabolism. Phenylalanine “activates” phenylalanine hydroxylase, converting it from an inactive to an active form by binding to a true allosteric regulatory site. One phenylalanine molecule is attached to each enzyme subunit. It remains at this point during the catalytic conversion and cannot be hydroxylated there.
In persons with PKU, phenylalanine can cause intellectual incapacity, brain damage, seizures, and other difficulties. Many high-protein foods, such as milk, eggs, and meat, naturally contain phenylalanine. Phenylalanine can also be purchased as a dietary supplement.
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Complete question :
Phosphorylation is an important form of posttranslational modification for intracellular proteins. Which one of the following amino acids is not a target for phosphorylation?
-phenylalanine
-histidine
-tyrosine
-serine
-threonine
Related Questions
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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Will mark brainliest
Answers
Answer:
2)D
3)B
4)C
5)A
6)A
7)D
8) I'm not sure
although 61 different codons code for amino acids, cells contain fewer than 61 difterent trnas. why? a)because the 5' base on the trna anticodon has some flexibility (wobble); thus, some trna anticodons can pair with more than one mrna codon. b)although 61 different codons code for amino acids, any given cell contains fewer than 61. c) because the 5' base on the mrna codon has some flexibility (wobble); thus, some mrna codons can pair with more than one trna anticodon. d) because each amino acid is coded for by just one codon.
Answers
Cells contain fewer than 61 different tRNAs because the 5' base on the mRNA codon has some flexibility (wobble); thus, some mRNA codons can pair with more than one tRNAs anticodon, option C.
What is the role of tRNAs?The small RNA molecules that play a major role in protein synthesis are called Transfer Ribonucleic acids (tRNA). They serve as the adaptor between nucleic acid containing genetic instructions and protein products encoded in genes.
Transfer RNAs are fewer than 61 because the 5' base on messenger RNA (mRNA) codon has flexibility and some mRNA codons can pair with more than one tRNAs anticodon.
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of which macromolecule are membrane channel and pumps composed
Answers
Answer:
The macromolecules that forms pumps and channels in the cell membrane, allowing the entry and exit of molecules to the cell are protein.
Explanation:
Membrane integral proteins are a type of macromolecule attached to the structure of the membrane and have ends in contact with the cytoplasm and the extracellular medium.
These protein molecules can act as channels and transporters or pumps, to facilitate the passage of substances through the membrane. An example of transmembrane channels are ion channels, while a protein transporter is the sodium potassium ATP-ase pump.
Membrane proteins can also act as surface receptors and enzymes linked to the cell membrane.
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Describe and distinguish between the sources of energy utilised by the brain and heart under well-fed and starvation conditions.
Answers
Answer:
Brain ----- glucose and amino acids.
Heart ------- fatty acids and triglycerides.
Explanation:
The sources of energy utilized by the brain is glucose under well-fed whereas the sources of energy utilized by the heart under well-fed condition is fatty acids. During starvation, the source of energy used by the brain is amino acids from skeletal proteins when glucose is not available while on the other hand, during starvation, the heart utilized triglycerides as a source of energy in the absence of fatty acids.
What are the PRODUCTS in RESPIRATION?
a. glucose and oxygen
b. carbon dioxide, water and ATP (cell Energy)
C. ATP and oxygen
d. carbon dioxide and glucose
Answers
Answer:
I think it could be d
Explanation:
if not a
What are the characteristics on the side of the diagram called?Characteristics: amniotic egg, tetrapod, vertebrae, develop from blastula, common ancestor.
Answers
The diagram in the picture is a cladogram, a diagram that depicts rellationships between different groups of organisms, reconstructing evolutionary history. The cladogram is composed of nodes, clades and roots (initial ancestor, common to all).
The concentration of glucose in the blood at P, and in the fluid at Q, is 0.1 per cent. The concentration of glucose in the fluid at R is 0.0 per cent.
Use information from the diagram, and your own biological knowledge, to explain the change in glucose concentration from point P through to point R.
Answers
Answer:
Explanation:The change in glucose concentration from point P to point R can be explained by the process of diffusion. Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.
At point P, the concentration of glucose in the blood is 0.1 percent. This means that there is a higher concentration of glucose in the blood compared to the surrounding fluid. Due to the concentration gradient, glucose molecules will tend to move from the blood to the surrounding fluid through diffusion. As a result, glucose molecules will diffuse from point P towards point R.
As the glucose molecules move from point P towards point R, they will continue to spread out and mix with the surrounding fluid. At point Q, which is between P and R, the concentration of glucose in the fluid will increase due to the diffusion of glucose from the blood. However, the concentration at point Q will still be lower than the initial concentration at point P.
As the glucose molecules continue to diffuse towards point R, the concentration gradient decreases. Eventually, at point R, the concentration of glucose in the fluid is 0.0 percent. This means that all the glucose molecules have diffused from the blood and mixed with the fluid, resulting in an equal concentration of glucose in the blood and the fluid at point R.
In summary, the change in glucose concentration from point P to point R is due to the process of diffusion, where glucose molecules move from an area of higher concentration (point P) to an area of lower concentration (point R) until equilibrium is reached.
At point P, the concentration of glucose in the blood is 0.1 per cent, which is the same as the concentration in the fluid at Q. This suggests that at point P, glucose is freely filtered from the blood into the glomerular filtrate without being selectively reabsorbed. Therefore, the concentration of glucose remains constant from point P to point Q.
However, at point R, the concentration of glucose in the fluid is 0.0 per cent. This indicates that glucose has been selectively reabsorbed from the glomerular filtrate back into the blood. In the renal tubules, specialized transporters actively reabsorb glucose molecules from the filtrate and transport them back into the bloodstream. This process ensures that glucose, which is an important energy source for the body, is retained rather than being excreted in the urine.
The change in glucose concentration from point P to point R is due to the selective reabsorption of glucose in the kidneys. As the glomerular filtrate passes through the renal tubules, glucose is actively transported back into the bloodstream, leading to a decrease in its concentration from point P to point R. This mechanism helps maintain a stable blood glucose level and prevents the loss of valuable energy resources.
You will be completing another sim activity where you make the environment of population b much colder. however, this time the ostrilope population will experience mutations that can cause new traits to appear in the population. what do you think will happen to population b when they can experience mutations and when their environment gets colder
Answers
New traits can be brought about via mutations, raising the possibility that one of these characteristics will assist a population become more equipped to change with the environment.
How does a population's ability to pass on certain qualities change as the environment changes?The mutation might be advantageous if the conditions change and aid the organism in adjusting to it. The organisms that endure transmit on this advantageous quality to their progeny.
How natural selection and mutagenesis are impacted by the environment?Darwinism, which determines which traits are passed down in a group over time, will test the genetic variability caused by the mutation. As organisms adapt to shifting environmental conditions and evolve, advantageous mutations are passed on while bad mutations are removed.
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What makes the pancreas, liver, and gallbladder so important in digestion?.
Answers
Answer:
What makes the pancreas, liver, and gallbladder so important in digestion?
The pancreas supplies digestive juice to the small intestine through small tubes called ducts. Liver—The liver produces a digestive juice called bile that helps break down fats and
Answer: the person above me is very smart and is correct!
Explanation:
A non-food source of vitamin K is:â
â
sunlight.
âintestinal bacteria.
âantibiotics.
âtap water.
âdental implants.
Answers
Intestinal bacteria produce vitamin K in yet another form. Menaquinone is the term for this kind. Menadione is the name of the synthetic version of vitamin K.
Additionally, a number of studies have indicated that menaquinones, generally known as vitamin K2, may work better than phylloq to activate extra-hepatic vitamin K-dependent proteins. It supports healthy skin and bone metabolism, fosters appropriate brain function, and guards against heart-related illnesses. Additionally, vitamin K2 plays a crucial role in the body's use of calcium to support bone growth and prevent blood vessel calcification. Animal products and canned meals include vitamin K2. Vitamin K1 is also known as uinone.
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which of the following combinations would most likely contribute to the development of a superinfection?
Answers
A superinfection is a secondary infection that occurs during or after treatment of a primary infection, usually due to a different microorganism or strain. Factors that increase the risk of superinfection include the use of broad-spectrum antibiotics, prolonged use of antibiotics, and a weakened immune system.
Based on these factors, the following combinations are more likely to contribute to the development of a superinfection:
Broad-spectrum antibiotics and prolonged use: Broad-spectrum antibiotics can kill both the harmful bacteria causing the primary infection and the beneficial bacteria in the body, disrupting the normal balance of microorganisms. Prolonged use of antibiotics further weakens the immune system and creates a favorable environment for other microorganisms to grow.
Immunosuppressive drugs and a weakened immune system: Immunosuppressive drugs suppress the immune system, making the body more susceptible to infections. A weakened immune system due to other factors such as chronic diseases, HIV/AIDS, or chemotherapy can also increase the risk of superinfection.
Multiple antibiotic use: Using multiple antibiotics at the same time can increase the risk of superinfection by promoting the growth of antibiotic-resistant strains of bacteria.
In summary, any situation that weakens the immune system disrupts the balance of microorganisms or promotes the growth of antibiotic-resistant bacteria can increase the risk of superinfection. Therefore, it is important to use antibiotics judiciously and take measures to support the immune system during and after treatment of infections.
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a misscence mutation is likely to effect it's primary secondary tertiary quaternary structure? question
Answers
A genetic change in which the genetic code is changed by a single base pair substitution, resulting in the production of an amino acid that differs from the typical amino acid at that site which further effect the primary secondary tertiary quaternary structure protein.
Some missense variations (or mutations) change how a protein functions.
Missense Mutation- A missense mutation is a Genetic alteration that causes the protein produced to encode a different amino acid at a specific location. Some missense mutations change how the resultant protein functions.
Amino Acid- Small chemicals known as amino acids serve as the foundation for proteins. For Example, Valine.
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Omnivores are animals that feed on A) producers only B)consumers only C)both producers and consumers D)nine of the above
Answers
Answer:
C. both producers and consumers
Explanation:
An animal that sustains itself on both plant and animal matter.
Omnivores eat both plants (producers) and animals ( consumers )
Focus your attention on the section called Anterior Pituitary of Focus Figure 17.4. Match each structure at the left to its appropriate function at the right.
Answers
Sure! In the Anterior Pituitary section of Focus Figure 17.4, we need to match each structure on the left to its appropriate function on the right.
1. Pars Distalis: This is the anterior lobe of the pituitary gland, and its main function is to produce and secrete several hormones, including growth hormone, prolactin, adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), follicle-stimulating hormone (FSH), and luteinizing hormone (LH).
2. Pars Intermedia: This is the middle portion of the anterior pituitary, and its main function is to produce and secrete melanocyte-stimulating hormone (MSH), which is involved in the regulation of skin pigmentation.
3. Pars Tuberalis: This is a thin layer of cells that wraps around the infundibulum (stalk) of the pituitary gland. Its function is not well understood, but it is believed to play a role in regulating the secretion of other hormones from the pituitary gland.
The anterior pituitary gland is divided into three main sections: pars distalis, pars intermedia, and pars tuberalis. Each section has specific functions related to the production and secretion of different hormones.
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Which expression is equivalent to (4 + 61)2
Answers
Answer:
260/2 is equivalent to (4+61)2
*PLEASE ANSWER ASAP!!!*
What is a coral skeletal structure that has voids between the polyps?
a.) organic structure
b.) perforated structure
c.) exhaustive structure
Answers
Answer:
A
Explanation:
Each polyp makes its own cup-shaped skeleton called a calyx ("KAY-lix)" from limestone (calcium carbonate). The base of the calyx is called the basal plate, and the outer walls of the calyx are called the theca ("THEE-kuh")
Answer:
I'm pretty sure it's A
Explanation:
coral skeletons are biocomposites (mineral+organics) or calcium carbonate
What human activity contributes to air pollution?
construction
reforestation
habitat restoration
dam development
Answers
Answer:
construction
Explanation:
because more pollution is produced when the construction is in process and the pollutions are
1.noise pollution
2.air pollution etc...
The human activity that results in air pollution is construction. Please find how construction results in air pollution below.
What is air pollution?Air pollution is the release of toxic substances called pollutants into the atmosphere.
Pollutants can be released into the atmosphere as a result of anthropogenic or human activities. These activities include:
ConstructionMiningFossil burningTherefore, the human activity that results in air pollution is construction.
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3Which of the following best describes the relationship between natural selection and
beneficial traits?
re passed on to
A
Natural selection is the process by which beneficial traits are
offspring in subsequent populations.
B
Beneficial traits and natural selection are both mechanisms by which genes are
passed from a parent to an offspring.
C
Beneficial traits allow an organisms to be better suited to its environment.
Natural selection determines which traits are beneficial and which are
mutations.
D There is no relationship between natural selection and beneficial traits.
Answers
The relationship between natural selection and beneficial traits is best described by beneficial traits that allow an organism to be better suited to its environment (Option C).
Nаturаl selection is а mechаnism of evolution. Orgаnisms thаt аre more аdаpted to their environment аre more likely to survive аnd pаss on the genes thаt аided their success. This process cаuses species to chаnge аnd diverge over time.
In nаturаl selection, genetic mutаtions thаt аre beneficiаl to аn individuаl's survivаl аre pаssed on through reproduction. This results in а new generаtion of orgаnisms thаt аre more likely to survive to reproduce.
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3) Fill out the graphic organizer below based on the reading above.
Connective Tissues
Answers
Connective tissues consist of a ground substance, a non-living substance, and a matrix of living cells.
Tissue That Contains Fibers
In fibrous connective tissues, which have few cells or other forms of matrix, collagen fibers predominate. The fibers' strands can be arranged either randomly or in parallel. Fibrous connective tissues are distributed unevenly in areas of the body that are constantly under stress, such as the dermis of the skin
Cartilage
Cartilage is a type of connective tissue that has a substantial amount of matrix and various numbers of fibers. The chondrocyte cells produce the tissue's matrix and fibers. Lacunae, which are voids in the tissue, are where chondrocytes are found.
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ttaccgg taacgca cgcatgt tgaccta gccaatt
Answers
Answer: Uh okay then
Explanation:
Answer:
tacgagcatgcatgca
tgca gcta tagac tacg
usually, a river ________ at its source compared to farther downstream.
Answers
There can be many answers for these king of question for eg:- Its wider
If you do not have an adequate level of fat in your body, you might have trouble
producing: (B.9A)
-All of these
-Hormones
-Nerve insulation
-Cell membranes
Answers
Answer: All of these
Explanation: Cell membranes, never insulation, and hormones all require lipids to be made in some way or another!
If one do not have an adequate level of fat in your body, you might have trouble producing hormone, nerve insulation, and cell membranes. The correct option is A.
What is the importance of fats?Fat also aids in the production of steroid hormones, such as the hormones like estrogen and testosterone.
Steroid hormones all have a similar structure and are synthesized from the ground up in the ovaries, testes, and adrenal gland.
A low-fat diet reduces the production of estrogen and progesterone in the body.
Each nerve cell is surrounded by a layer of fat known as the myelin sheath. The myelin sheath is an important component of nerve cells that aids in the efficient transmission of messages.
In mammals, including humans, fatty acids form the foundation of cell membranes, provide metabolic energy, influence the functions of membrane-bound enzymes/receptors, carry out signaling cascades, and aid in learning-related memory cognition.
Thus, the correct option is A.
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of these three types of electromagnetic waves which has the longest wavelength?
A. ultraviolet
B. visible
C. infrared
D. It all will have the same wavelength
Answers
The electromagnetic wave with the longest wavelength is ; ( C ) Infrared
The electromagnetic wave with the longest wavelength from the listed electromagnetic waves is the Infrared with a wavelength of around 10⁻5 m.
Difference between wavelengthsThe longer the wavelength of an electromagnetic wave the shorter the frequency of the wave because the wavelength of an electromagnetic wave is calculated as ; λ = c/f
Where :
c = velocity f = frequency λ = wavelengthHence we can conclude that The electromagnetic wave with the longest wavelength is ; Infrared
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which of the following occur as a result of fertilization?
multiple select question.
crossing over haploid organism diploid organism zygote
Answers
The result of fertilization is the formation of a **diploid organism** and a **zygote**.
Fertilization is the process where a sperm cell and an egg cell (both haploid) fuse to form a zygote, which is a single cell with a diploid chromosome number. A diploid organism has two complete sets of chromosomes, one from each parent. This is in contrast to a haploid organism, which has only one set of chromosomes. Crossing over is not a direct result of fertilization; it occurs during meiosis, the cell division process that produces haploid gametes (sperm and egg cells). The zygote formed through fertilization will eventually undergo multiple rounds of cell division and differentiation to develop into a multicellular organism.
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p. 95
3) a) Explain what is meant by carrying capacity:
b)Explain the importance of carrying capacity to the growth and maintenance of population numbers:
Answers
a) Carrying capacity refers to the maximum number of individuals of a specific species that an environment can sustainably support. b) Carrying capacity is crucial for the growth and maintenance.
a) Carrying capacity refers to the maximum number of individuals of a specific species that an environment can sustainably support. It is determined by the availability of resources such as food, water, and habitat, as well as factors like predation and competition.
b) Carrying capacity is crucial for the growth and maintenance of population numbers because it influences the population's ability to thrive in a given environment. When a population is below its carrying capacity, there will be enough resources for growth, leading to an increase in population size. However, when the population exceeds its carrying capacity, resource limitations can cause a decline in population size, as competition for resources becomes intense, and individuals struggle to survive. Thus, understanding carrying capacity helps in predicting and managing population growth to ensure the long-term sustainability of the ecosystem.
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Do you have a summative in Grade 9 science?
Answers
Answer:
check with your teacher
Answer:
yes I have
Explanation:
why did you ask
What mechanism does a cell use to move these small potassium molecules into the cell against the concentration gradient?
A.
active transport by proteins
B.
active transport by endocytosis
C.
passive transport by osmosis
D.
passive transport by diffusion
Answers
A. A cell uses active transport by proteins to carry tiny potassium molecules into the cell in opposition to the concentration gradient.
What is Active Transport?Active transport is the movement of molecules across a membrane from an area of lower concentration to an area of higher concentration, which requires energy input. In the case of potassium ions, cells use specialized proteins called pumps to actively transport the ions across the membrane, against the concentration gradient, and into the cell. These pumps use energy in the form of ATP to transport the ions, and are critical for maintaining the proper balance of ions inside and outside the cell.
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Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations.
Based on what you’ve learned about natural selection, in 3–5 sentences, describe how mosquitoes may have come to develop this resistance.
Answers
Answer:
Here are 3-5 sentences that describe how mosquitoes may have come to develop resistance to DDT:
Natural selection: Over time, mosquitoes that were naturally resistant to DDT were more likely to survive and reproduce, passing on their resistance genes to their offspring. This led to a population of mosquitoes that were increasingly resistant to DDT.Genetic mutation: Genetic mutations can occur randomly in any population. In some cases, these mutations can make an individual more resistant to a particular insecticide. If this individual survives and reproduces, its offspring will also be resistant to the insecticide.Environmental factors: Some environmental factors, such as pollution, can also increase the rate of genetic mutations. This can lead to an increase in the number of mosquitoes that are resistant to insecticides.As a result of these factors, mosquito populations can develop resistance to insecticides over time. This can make it difficult to control mosquito-borne diseases.
If all organisms originated in their present forms during a single event, Darwin wondered, why was there a distinctive clustering of similar organisms in different regions of the world? Why were all types of organisms not randomly distributed?
Answers
Answer:
thanks
Explanation:
for fr pts....sssßwaaaaaasss
Charles Darwin's theory of evolution by natural selection is based on the idea that all organisms have descended from a common ancestor. This means that all organisms have evolved from a single source over time.
What was the reason for clustering of organisms ?Darwin wondered why, if this was the case, there was a distinct clustering of similar organisms in different regions of the world. The answer to this lies in the process of natural selection.
Natural selection is the process by which organisms that have certain advantageous traits have a higher chance of survival and reproduction than those without them.
This means that, over time, certain traits become more common in a particular region, leading to the clustering of similar organisms. For example, organisms in tropical regions may have evolved to have thicker fur to protect them from the heat, while those in colder climates may have evolved to have thinner fur to keep them warm.
In addition, the clustering of similar organisms can also be explained by the process of geographic isolation. This is the process by which organisms become separated from each other due to physical barriers, such as mountains or rivers.
This can lead to the evolution of distinct populations of organisms in different regions, which can further result in the clustering of similar organisms. For example, if two populations of the same species become separated by a mountain range, they may evolve differently due to their different environments, leading to the clustering of similar organisms in different regions.
In conclusion, the clustering of similar organisms in different regions of the world can be explained by the process of natural selection and geographic isolation. Natural selection leads to the preferential survival and reproduction of organisms with certain advantageous traits, while geographic isolation can lead to the evolution of distinct populations of organisms in different regions.
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