Answer:
The regulatory mechanism of enzymatic activity is known as Phosphorylation
Explanation:
Phosphorylation usually results in a functional change of the target protein (substrate) by changing enzyme activity, cellular location, or association with other proteins.
Answer:
The feedback inhibition regulatory mechanism. They do this by causing phosphorylation of the other enzyme.
Explanation:
There are two ways by which enzymes can be controlled or regulated. This includes
1. Controlling the synthesis of the enzyme (this relates to a genetic control)
2. Controlling the activity of the enzyme (feedback inhibition).
In this example here, the protein kinases act on other enzymes by adding phosphates groups bringing about phosphorylation and controlling or regulating the activity of these enzymes. Thus, this type of regularly is the feedback inhibition regulatory mechanism.
Phospholipids are molecules that have two regions, the head and the tail, with distinct chemical properties. Classify the descriptions as characteristics of the heads or tails of phospholipids.
Answer:
The head is described as being hydrophilic and polar . Whereas the tail region is hydrophobic (i.e., it does not interact with water) and is rich in hydrocarbons.
Explanation:
These particular properties of the phospholipid molecule is what allows for the structure of membrane to be possible. The phospholipid bi-layer is what holds the cell together so its importance cannot possibly be overstated!
helloo guysss pleaseeee help with this one
Answer
Uses of yeast
Fermentation BiomassGlycerol Alcoholic beverageYeast is found on the outer surface of sugary substances like fruits and grains.
Hope it helps :)
Answer:
i'm not in my biology class yet
Explanation:
i trust this thou Uses of yeast
Fermentation
Biomass
Glycerol
Alcoholic beverage
Yeast is found on the outer surface of sugary substances like fruits and grains.
Hope it helps :)
State the characteristic of tracheoles that help with gaseous exchange
in insects.
Answer:
made up of a single epithelium layer to allow diffusion of gases.terminal ends of fine tracheoles are filled with a fluid in which gases dissolve and therefore transported in solution formWhat is one disadvantage of using solar energy?
A. Solar energy produces greenhouse gases.
B. Solar panels are very inexpensive.
C. Solar energy is available only in the summer.
D. Solar panels work well only in sunny areas.
Answer:
A. Solar energy produces greenhouse gases.
Explanation:
Solar energy produces Infrared radiation. Which is the outgoing heat from earth to space during the night.
The chemical equation of photosynthesis includes 602. Which best describes this substance?
a solid used during photosynthesis.
a gas used during photosynthesis.
a liquid produced during photosynthesis.
a gas produced during photosynthesis.
Answer:
The correct option is;
A gas produced during photosynthesis
Explanation:
The chemical reaction of photosynthesis is given as follows;
6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)
Therefore, six molecules of gaseous carbon dioxide (CO₂) combine withe six molecules of liquid water (H₂O) in the presence of energy from Sunlight to produce one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)
The 6O₂ is the gaseous oxygen produced as a byproduct of photosynthesis
Answer:
D
Explanation:
Some viruses can be crystallized and their structures analyzed. One such virus is yellow mottle virus, which infects beans. This virus has a single-stranded RNA genome containing about 6300 nucleotides. Its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.If the yellow mottle virus begins its infection of a cell by using its genome as mRNA, which of the following would you expect to be able to measure?
A) replication rate
B) transcription rate
C) translation rate
D) formation of new transcription factors
The correct answer is 9 proteins form each of the 20 facets of this virus. A capsid is the protein shell that surrounds a virus. A capsomere is the subunit of the capsid. Depending on the virus, capsomeres arrange in many different shapes to form the capsid. The yellow mottle virus has 20 facets, this means that it has an icosahedral capsid. Since it contains 180 identical capsomeres, we can conclude that 9 proteins form each facet.
Which process produces two copies of the original DNA molecule?
O A. DNA ligation
B. DNA transcription
C. DNA translation
O D. DNA replication
SUBMIT
Answer:
The answer is option D.
DNA replicationHope this helps you
The cells in this part of a plant form long, vertical tubes. What is the most
likely relationship between the structure and function of these specialized
cells?
A. The tubes allow the plant to absorb sunlight for photosynthesis.
B. The tubes prevent potential damage to the leaves caused by
strong winds.
C. The tubes prevent water loss from the leaves.
D. The tubes allow water and nutrients to be transported throughout
the plant
Answer:
D. The tubes allow water and nutrients to be transported throughout
the plant.
Explanation:
option D supports the description of the cells. The long , vertical tubes transport water and nutrients and are most likely xylem and phloem vessels.
option A is wrong since, chloroplasts inside the cell helps in absorbing sunlight.
option C is also wrong, because water loss is controlled by the stomata in the leaves and they are not long tubes.
option B could possibly be right but option D is better suited.
Answer:
The tubes allow water and nutrients to be transported throughout
the plant.
Explanation:
Ape-x
what are the materials needed for respiration to occur
Answer:
Glucose + oxygen → Carbon Dioxide + Water
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂0
Explanation:
Glucose and oxygen and the reactants required for respiration to occur and as a result of respiration carbon dioxide and water are both formed as products.
The quarrel between the Capulets and Mantagues has been going on for a long time when the play opens.
OTrue
O False
Answer: True
Explanation:
What was one of the first rocks ever formed? Is it still popular today?
Answer:
One of first rock ever formed is faux-amphibolites.
Explanation:
Faux amphibolites were discovered by researches and it believed to be formed as a result of volcanic activities. It is also believed to be prevalent between igneous and metamorphic rock locations as a result of volcanic deposits.
This type of rock however isn’t popular today due to decreased volcanic activities and eruptions.
In response to high amounts of phosphate transport into the cell: a. PhoR is phosphorylated by the phosphate transporter protein Pst b. PhoR binds with PhoB to remove PhoB repression of phosphate regulon genes c. PhoR is exported out of the cell to scavenge phosphate molecules d. PhoU changes conformation to allow PhoR to autophosphorylate e. PhoU keeps PhoR bound to the phosphate transporter protein Pst
Answer:
e. PhoU keeps PhoR bound to the phosphate transporter protein Pst
Explanation:
PhoU is a membrane protein known to regulate the transport of phosphate (Pi) between cellular compartments. It has been discovered that mutations in this protein cause lethality because the cell becomes incapable of controlling the intracellular levels of Pi, this being toxic for the cell. PhoR is a histidine kinase/phosphatase. When the Pi level is considered to be a limiting factor, PhoR autophosphorylates at a histidine residue and then donates its phosphoryl group to PhoB. On the other hand, when the Pi level is high, this protein removes the phosphoryl group from phospho-PhoB. Finally, the Pst is a signal transduction protein that acts as a transporter capable of switching its conformation during the transport of PI.
The pathogenesis of tuberculosis includes the entrance of mycobacteria into the lungs and the resulting of which of the following? (Select all that apply.) Calcification Ghon tubercles Formation of granulomas Activation of macrophages Antigen-antibody complexes
Answer:
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. A granuloma is a mass of immune cells that forms when the immune system tries to isolate foreign substances.Macrophages can be activated by a variety of stimuli during the immune response. The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response.Explanation:
Tuberculosis is a disease caused by Mycobacterium tuberculosis, a bacterium that almost always affects the lungs. When the active form of the disease is present, symptoms (cough, fever, night sweats, weight loss, etc.) can be mild for many months. If not treated properly, Tuberculosis can be fatal.
Macrophages are a type of white blood cell found in the blood and they are the first body's defense against foreign substances. So they are effector cells of the immune system, the main players in the innate immune response.
When M. Tuberculosis infects a person, it attacks this first-response immune cells in the lungs, the macrophages. When they recognize these pathogens, macrophages produce the cytokines IL-1 and TNF-α, which cause the inflammation itself by acting on the endothelial cells of the nearby blood vessels to allow the transendothelial migration of the leukocytes. The inflammation t is a non-specific response to environmental aggressions, and its purpose is the isolation and destruction of the damaging agent, as well as repairing the damaged tissue or organ.
The macrophages have a in the calcification process, which generates the inflammatory processes. The Ghon tubercles is a lung lesion caused in tuberculosis that consists of a focus of calcification in conjunction with a lymph node infection. These lesions are especially common in children and may retain viable bacteria, so they are sources of disease transmission and may also be associated with classic tuberculosis reactivation after several years of inactivity.A granuloma is a roughly spherical mass of immune cells that forms when the immune system tries to isolate foreign substances that it has been unable to eliminate. Therefore it is a special type of inflammation that can occur in a wide variety of diseases. Infections that are characterized by granulomas include tuberculosis, but also include for example leprosy, histoplasmosis, cryptococcosis, coccidioidomycosis, blastomycosis, and cat scratch disease.Macrophages are usually in a resting state, they can be activated by a variety of stimuli during the immune response. Antigen phagocytosis serves as an initial stimulus; however, macrophages and their activity can be increased by cytokines secreted by, or through contact with, helper T-lymphocytes. One of the most powerful macrophage activators is gamma interferon. They are also able to recognize molecular patterns associated with pathogens. M. tuberculosis is a pathogen that contains Pathogen-associated molecular patterns (PAMPS), which are small sequences of molecules that repeat in groups of pathogens. They are recognised by Pattern-recognition receptors (PRRs), which include the Toll-like receptor (TLRs) family or the NOD-like receptors (NLRs). Once the receptors found in the macrophages recognize these PAMPS, the macrophages are activated are ready to perform an immune response.The antigen-antibody (Ag-Ac) reaction is one of the molecular reactions in the body's immune response. The concept refers to the specific binding of an antibody to an antigen to inhibit or delay its toxicity. When the macrophage recognizes a pathogen, it phagocytes it and degrades it, and presents its peptides to a T cell. This can activate a cytotoxic response, causing apoptosis of infected cells. Or, the T cell may activate a B cell to produce antibodies. Antibodies are proteins whose function is to detect any foreign elements that may enter the body. They normally detect specific parts of these elements, for example, proteins from the surface of bacteria or viruses. When antibodies bind to these foreign proteins, they act as a marker, making it easier for them to be recognised and eliminated by the cells of the immune system.what is a carbon foorprint
Answer:
Definition: The amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.
why the process of photosynthesis is important to life on Earth?
Answer:
Photosynthesis captures light energy from the Sun and stores it in the bonds of glucose, which is then used during cellular respiration to drive the formation of ATP in all plants and animals.
hope this can help you .
If a forest experiences a fire, which adaptation would most likely help an organism survive?
Answer:
cellulose
Explanation:
Foot-and-mouth disease virus (FMDV) causes severe disease in pigs, cattle, sheep and goats. High levels of FMDV infection can threaten the livestock industry. Which of the following statements best describes how FMDV reproduces in its livestock host? A. It uses the animal’s cellular machinery to reproduce inside the animal. B. It kills the animal and feeds on its carcass. C.It releases spores into the animal’s digestive tract. D. It produces eggs that are shed on the ground with the animal’s wastes. brainliest to the correct answer
Answer:
A. It uses the animal’s cellular machinery to reproduce inside the animal.
Explanation:
I would go with A because since it is a virus it cannot live outside the body and thus needs to rely on host's cell for metabolism as viruses are not capable of having their own metabolism.
Answer:
A. It uses the animal’s cellular machinery to reproduce inside the animal.
Explanation:
khan
While you and your classmate are studying for your biological anthropology midterm, your classmate tells you that the bones of Lucy, a famous australopithecine specimen that dates to about 3.2 million years ago, were dated based on carbon-14 analysis. Why is this incorrect?
The options for this incomplete question are :
Fossils are living organisms that have wholly or partially been transformed into rock.
Lucy does not have bones with organic material necessary for carbon-14 dating.
This specimen is also far too old for C-14 dating to be accurate, as well as for any other technique but palaeomagnetic dating.
Your classmate is therefore incorrect for all of the reasons listed. (All of the above)
Answer:
The correct answer is - all of the above reasons.
Explanation:
Fossils are living life forms that have completely or mostly been changed into the rock during the process of fossilization. Lucy doesn't have bones with organic material that are essential to use the carbon 14 dating technique.
This example is additionally very old for C-14 dating to be exact, just as for some other method, however, palaeomagnetic dating can do the job of dating in this case.
Thus, the correct answer is - all of the above reasons.
sketch and label a eukaryotic cell for animal and plant
Answer:
Here is a diagram of eukaryotic cells! hope it helps
Explanation:
Match each term about wind erosion and deposition with its description.
abrasion
a deposit of fine, mineral-rich soil that is
good for agriculture
deflation
sand deposited against an obstruction
sand dune
the process by which wind moves particles
that are loose
the process by which wind wears down
solid objects
loess
loess - a deposit of fine, mineral-rich soil that is good for agriculture
deflation - the process by which wind moves particles that are loose
sand dune - sand deposited against an obstruction
abrasion - the process by which wind wears down solid objects
Plz mark brainliest :)
Answer:
abrasion- the process by which wind wears down solid objects.
sand dune- sand deposited against an obstruction.
deflation- the process by which wind moves particles that are loose.
loess- a deposit of fine, mineral-rich soil that is good for agriculture.
Explanation:
edge 2020
3. The normal breaths per minute for a person is called _________________ of that person.
Answer:
Respiratory rate of that person.
Please mark me as the brainliest!
Thanks!! friend...
Children living at high altitudes develop larger chest cavities by adulthood than children living at lower altitudes. This is an example of Group of answer choices environmental adaptations that occur at the individual level. acclimatization at the individual level. developmental adaptations that occur at the level of the individual during critical life stages. inheritance of increases in lung volume by high-altitude populations.
Answer:
developmental adaptations that occur at the level of the individual during critical life stages.
Explanation:
High altitudes is characterized by low amounts or concentration of oxygen. The body parts especially the lungs have to adjust and the lungs are usually expanded to allow for more oxygen for the body metabolism.
This is why Children living at high altitudes develop larger chest cavities by adulthood than children living at lower altitudes and is an example of developmental adaptations that occur at the level of the individual during critical life stages.
Has the Clements successional theory been subjected to peer review and publication?
Answer:
Yes the Clements successional theory has been subjected to peer review and publication
Yes, the Clements successional theory been subjected to peer review and publication.
What is Clements successional theory?Plant succession was characterised by Clements as a developmental process that, during the course of a community, it went through a well-defined series of stages that, in the end, resulted in a mature community, also known as the climax community. The climatic conditions that determined the climax community's existence manifested themselves in the form of an indicator and an expression of that community.
His hypothesis of community formation, sometimes known as plant succession, is what brought Clements the most fame. Even after World War II, Clements' organicism and physiological perspective were still around, albeit in a watered-down version, despite the fact that it was extensively discredited by later ecologists.
Learn more about Clements successional theory, here:
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Fossil fuel and nuclear plants both heat water in order to turn _____?
O A. turbines
O B. solar panels
DO O C
O C. reserves
D. windmills
Answer:
i thinkits no a .to turn turbines.
Romantic movement aspire writers such as
Answer:
Emily Dickinson
Explanation:
Emily Dickinson was a poet who was inspired by the romantic movement, she used romanticism in her poems.
Answer:
Emily Dickinson
Explanation:
emily dickinson was inspired by the romantic movement
0cm3 of acid were mixed with 60cm3 of alkali in an insulated container. The average temperature of the two solutions before they were mixed was 19.5°C. The temperature after mixing was 27.5°C. Was this an exothermic or an endothermic reaction?
Answer: Endothermic reaction.
Explanation: An endothermic reaction is any chemical reaction that absorbs heat from its environment. In this reaction, the temperature of the mixture raised from 19.5°C to 27.5°C, which means there was an increase of heat, ergo, it is an endothermic reaction.
3 types of protozoan diseases and their causative parasites
Answer:
Malaria, Leishmaniasis, and Toxoplasmosis.
Malaria is caused by Plasmodium parasites.
Leishmaniasis is caused by infection with Leishmania parasites.
Toxoplasmosis is an infection caused by a parasite that is called Toxoplasma gondii.
Which land feature supports the theory of continental drift?
canyons
volcanoes
coal fields
Oceans
Help plz
Answer:
The correct option is;
Canyons
Explanation:
The theory of continental drift, which was a 1596 hypothesis of Abraham Ortelius, is that the continents on Earth have had relative motion with one another over a period of geologic time such that the continents looks to haven drifting motion over the bed of the ocean
Evidence of the motion of the continents was first presented by Alfred Wegener in 1912 and continuing exploration of the ocean floor by Harry Hammond Hess has revealed that the there are lots of canyons, sea mountains such that the crust of the Earth moved apart on the facing sides of the ocean ridge which where evidence of sea floor spreading supporting the theory of continental drift.
THE ANSWER IS COAL FIELDS NEARLY EVERYONE POSTING THIS PUT CANYONS AND IS NOT RIGHT. I just took the quiz and put coal fields and got it right. No gimmicks. This the true answer.
Which describes absorption?
Answer:
Absorption. Absorption, in general sense, is the act or process of absorbing or assimilating. In biology, absorption pertains particularly to the process of absorbing or assimilating substances into the cell or across the tissues and organs. It is done through diffusion or osmosis.
Explanation:
Answer:
A sponge
Explanation:
Because when the sponge is applied pressure around water, or air, the pressure from around the sponge sucks back into the sponge making the sponge fluffed or wet if put in water.
Together, the stages of cellular respiration break down one molecule of ___ to generate a total of ____ molecules of ATP. The remaining energy is released as __ .
Answer:
1) Glucose
2) 36
3) Heat
Explanation:
Cellular respiration is a metabolic process that every living organism undergo. It is the process by which energy is obtained by living cells. In the process of celluar respiration, energy-storing food molecule called Glucose is broken down in the presence of oxygen in order to release its energy and convert it to a usable form by the cell called ATP.
Celluar respiration occurs in three distinct stages in eukaryotes viz: Glycolysis Kreb's cycle and Oxidative phosphorylation. In Glycolysis, which occurs in the cytoplasm, glucose is broken down in a series of enzymatic reaction to yield Pyruvate and releasing a net gain of 2 ATP molecules. In Kreb's cycle, which occurs in the mitochondrion, produces carbondioxide in a two-cycled reaction involving Pyruvate. 2 ATPs are also produced in this stage.
Lastly, in Oxidative phosphorylation also occuring in the mitochondrion, electrons are passed through electron acceptors to create a pump that generates the synthesis of 32 ATP molecules. In general, the three stages yield a total of 36ATP molecules from one molecule of GLUCOSE.
The rest of the energy from the oxidation of glucose is lost as heat energy, which is responsible for the warming effect we feel.