1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
patriot [66]
3 years ago
12

The behavior of allosteric enzymes a. does not play any role in feedback inhibition in metabolic pathways b. is strongly depende

nt on the presence of metal ions c. is related to their ability to hydrolyze themselves d. depends on changes in their quaternary structure on binding of substrates or inhibitors
Biology
2 answers:
Ugo [173]3 years ago
5 0

Answer:

The correct answer is d

Explanation:

Allosteric enzymes have multiple binding sites to different ligands called allosteric sites (different from the active site), these ligands can modify their kinetic properties. They are generally made up of more than one polypeptide chain, and have a quaternary structure, an enzyme with a quaternary structure can bind more than one substrate molecule. An allosteric enzyme is an enzyme whose activity is regulated by an allosteric center, which is a site, other than the active center of the enzyme, to which a regulator (called an allosteric regulator) binds in a reversible and non-covalent manner. The binding of this regulator modifies the three-dimensional structure of the enzyme and affects the configuration of the active site, thus increasing or decreasing its activity, depending on the case. The allosteric sites present in regulatory enzymes is where allosteric effectors or inhibitors are attached, causing a conformational change in the substrate binding site or catalytic site, thus regulating enzyme activity.

Lilit [14]3 years ago
4 0

Answer:

d. depends on changes in their quaternary structure on binding of substrates or inhibitors

Explanation:

Allosteric enzymes are oligomeric proteins composed of subunits or polypeptidic chains. They have a quaternary structure -many subunits and active sites- and express two states, R and T. Both states establish an equilibrium, with or without a joint ligand.

When the transition from one state to the other occurs, symmetry is conserved, but the affinity of a site to a ligand is altered. When a substrate joins one of the sites, it affects other binding sites.

Allosteric enzymes can change their conformation, exhibiting active and inactive conformations as a result of substrate binding at the activated center and regulatory molecules at other binding sites -allosteric centers-.

You might be interested in
Heart disease is a noncommunicable disease because
tatuchka [14]

The right answer is it can be influenced by lifestyle factors.

Noncommunicable diseases - or chronic diseases - are long-term diseases of generally slow evolution. The 4 main types of noncommunicable diseases are:

* Cardio-vascular diseases (or heart diseases)

* cancers

* Chronic respiratory diseases (COPD and asthma)

* Diabetes

Noncommunicable diseases, or NCDs, are by far the leading cause of death in the world, accounting for over 63% of all annual deaths.

7 0
3 years ago
Read 2 more answers
Name 3 injuries and two diseases that affect the skeletal system.
Ber [7]

Diseases: Osteoporosis & Scoliosis

Injuries: Open fracture, Avulsion fracture & Bowing fracture

6 0
3 years ago
Which of the following locations will most likely have the highest rate of evaporation?
omeli [17]

Answer:

Pacific Ocean Im pretty sure

8 0
3 years ago
Read 2 more answers
The results of the rapid strep test were negative, but the rapid flu test was positive for the influenza virus, type
Elden [556K]
<span>For a patient who tested positive for the influenza virus, type A, the coding system used is code 487.1. This code includes manifestations of laryngitis, pharyngitis, or respiratory infection, both upper and acute.</span>
6 0
3 years ago
7 + 7 + (–1) = <br><br> A. 13 <br> B. 10 <br> C. 16 <br> D. 7
Burka [1]
Step 1. Simplify brackets

7+7-1

Step 2. Simplify

13

Done! :) Your answer is A. 13 Hope this helps!
4 0
3 years ago
Other questions:
  • Hormones secreted by the adrenal cortex that help to maintain glucose levels in the blood are called:
    14·1 answer
  • Explain why changes in climate can result in the extinction of a species.
    12·2 answers
  • How are plants similar and different from animals?
    8·1 answer
  • In negative control of transcription by the lac operon, how does the presence of an inducer affect transcription?
    11·1 answer
  • What does the fully charged ATP LOSE to become uncharged?
    5·1 answer
  • PLEASE HELP, I only have one attempt
    8·1 answer
  • 1. At which type of boundary does new oceanic crust form?
    14·1 answer
  • A genetic factor for a trait is always expressed when it is present is best described as ?
    15·1 answer
  • What is the main factor that causes the bedrock to weather at different rates?
    7·1 answer
  • What does biodiversity mean?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!