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
m_a_m_a [10]
3 years ago
7

The lactose analog isopropyl-b-D-thio-galactoside (IPTG) is often used to regulate gene expression systems in bacteria. IPTG doe

s not act as a substrate for b-galactosidase, but can bind to, and inactivate, the repressor. In this case, IPTG serves as a(n)_______________.
A. inducer.
B. repressor.
C. effector.
D. operon.
Biology
1 answer:
statuscvo [17]3 years ago
3 0

Answer:

Option A. inducer.

Explanation:

The lac operon is an inducible operon. The presence of lactose allows the gene expression for the metabolism of lactose. The IPTG mimics the structure of allolactose. The allolactose is the direct inducer of the gene of lac operon. Lactose by converting to allolactose act as a inducer. The repressor in the lac operon binds with the operator region and thus inhibits the process of transcription.

The allolactose binds with repressor and thus inhibits its binding to operator thereby initiating the process of transcription. As the IPTG mimics allolactose so it binds with repressor and act as a inducer. Thus, option A is correct.

You might be interested in
I need help with this
Mnenie [13.5K]
Cell wall won’t be found in a animal cell since it’s only there in a plant cell.
3 0
2 years ago
Read 2 more answers
Which characteristic contributes to the quick nutrient cycling in tropical rain forests? A. Evergreen leaf litter B. Deep, ferti
Levart [38]
Th correct answer is "Heat and high humidity"
5 0
3 years ago
Read 2 more answers
What cell part is described below?
olya-2409 [2.1K]

That would be the nucleus.

The nucleus is the control center of the cell, located in the center of a cell.

8 0
3 years ago
Explain the advantage in having an inducible enzyme system that is regulated
My name is Ann [436]
 <span>It has the advantage that only when the substrate is presence the genes responsible for its metabolism are turned on.</span>
7 0
3 years ago
The portion of the circulation governed by the right side of the heart is the ______ circulation.
AlekseyPX
<span>The correct answer is B. Pulmonary. The answers C. Cerebral and D. Extremity, are baseless regarding this question; A. Systemic could be a good alternative, as the blood flows from the systemic to the pulmonary circulation in the right side of the heart; but the systemic circulation is in fact mostly handled in the left side of the heart, while the right side handles the pulmonary one. </span>
4 0
3 years ago
Other questions:
  • In virginia and some other parts of the world, water has carved vast caverns out of underground limestone deposits. water, howev
    13·1 answer
  • Explain why a combination of x-rays, ct scans, bone scans and mri scans is used when diagnosing bone cancer.
    15·1 answer
  • "it is observed that those who report the highest intake of added sugars in their diet are at an increased risk of developing di
    5·1 answer
  • Heyy this is really urgent,please help. I will mark brainliest
    15·1 answer
  • A species has homologous chromosomes. what does this say about the species?
    12·2 answers
  • Can all creatures can have their own kingdom if they have their own species too?
    7·1 answer
  • What is an example of a magnetic field line?
    8·2 answers
  • How is the universe organized into systems and galaxies
    11·1 answer
  • 3. What is the main stream of the Mississippi River<br> system?
    13·1 answer
  • Identify the statement which is not true
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!