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
scZoUnD [109]
3 years ago
11

In negative control of transcription by the lac operon, how does the presence of an inducer affect transcription?

Biology
1 answer:
likoan [24]3 years ago
6 0

Answer:

The correct answer is a) the inducer prevents the repressor from binding to the operator

Explanation:

In lac operon lac I gene synthesize repressor protein that binds to the operator region of the lac operon and inhibits the transcription of the mRNA  by partially blocking the promotor region of lac operon where RNA polymerase binds.

When the inducer is present it binds to the repressor protein and makes a conformation change in the protein as a result repressor protein is not able to bind the operator region of the operon and do not able to block the transcription of the lac operon.

Therefore in the presence of inducer transcription of operon occurs so the right answer is a) the inducer prevents the repressor from binding to the operator.

You might be interested in
All living organisms break down sugar to obtain energy using cellular respiration, Which of the following chemical reactions rep
Ghella [55]

Answer:

The chemical reaction that represents the process of aerobic cell respiration is oxygen + glucose → water + carbon dioxide + energy

Explanation:

Cell respiration occurs in the mitochondria of eukaryotic cells and consists of a series of chemical reactions in which energy in the form of ATP molecules is obtained from a glucose molecule in the presence of oxygen.

<u>Glucose is the main energetic substrate</u> to be able to synthesize energy in the form of ATP, through oxidative phosphorylation. At the end of the process ATP is obtained as products, and as waste compounds water and carbon dioxide, which can be schematized in the following chemical reaction:

              <em>              C₆H₁₂O₆  +  6O₂ →  6H₂O  +  6CO₂ + ATP ↑</em>

<em>                Glucose + Oxygen → Water + Carbon dioxide + Energy ↑</em>

This reaction summarizes what happens in aerobic cellular breathing, which is necessary to synthesize energy for cellular functions.

The other reactions:

  • <em>oxygen + water </em><em>→</em><em> glucose + lactose </em>
  • <em>glucose + lactose </em><em>→</em><em> oxygen + water </em>
  • <em>water + carbon dioxide + energy </em><em>→</em><em> oxygen + glucose</em>

<em>do not represent the components or the order of the reactions that occur in aerobic cell respiration</em>

7 0
3 years ago
A(n) <br> is a group of cells that work together to perform a common function.
Yuliya22 [10]

Answer:

tissue

Explanation:

a tissue is a group of cells that work together to perform a common function

5 0
1 year ago
Read 2 more answers
NEED HELP DUE TODAY PLZ HELP ME I AM STUCK PLZ PLZ PLZ HELP ME!!!!
Mnenie [13.5K]

Answer:

A. Chloroplasts

Explanation:

These are cells that are found in plant cells but not animal cells.

8 0
3 years ago
Read 2 more answers
Some bacteria have a —————- a tail like structure on a cell that allows the cell to move
MArishka [77]
Bacteria move using a tail like structure called flagellum .
3 0
3 years ago
Which statement best explains why the adaptive radiation of mammals was possible?​
Aloiza [94]

I think option a is the correct answer

8 0
3 years ago
Other questions:
  • Can you determine the identity of a mineral based on its properties?
    12·1 answer
  • Describe three pieces of evidence that support the big bang theory.
    8·1 answer
  • Which layer of earth is like the shell of an egg?
    13·2 answers
  • Beth learned in her science class that white blood cells in the human body capture harmful material by engulfing them. Then they
    5·2 answers
  • What kind of weather does an occluded front produce?
    13·2 answers
  • The primer for DNA synthesis is an RNA molecule formed by the enzyme ________________.
    12·1 answer
  • A falcultative anaerobic organism is able to perform aerobic respiration in the presence of oxygen and fermentation in the absen
    10·1 answer
  • When an organism encounters nitrate in its environment, which condition will determine whether the nitrate is used in an assimil
    5·1 answer
  • Which best describes the process that occurs when nuclear DNA codes for a protein in the cytoplasm
    13·1 answer
  • DNA is the hereditary molecule that determines hair color in humans. However, the DNA molecule itself is colorless. How does DNA
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!