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
SOVA2 [1]
3 years ago
8

Uppose that you are studying an inducible operon that contains two genes required for the metabolism of compound xyz. gene a enc

odes enzyme a, and gene b encodes enzyme
b. when compound xyz is absent, the operon is repressed, but when compound xyz is present, the operon is induced.

Biology
1 answer:
gregori [183]3 years ago
6 0
The exercise tells you to complete the table showing different cases of mutation in different parts of the operon.

First, what is an operon?
An operon is a genetic unit of coordinated expression. It comprises a group of adjacent structural genes encoding the enzymes of the same metabolic pathway, as well as the regulatory sequences affecting the transcription of these structural genes (like operon lactose or tryptophan). It is composed by:Structural genes/cistrons: code for the enzymes participating in the same metabolic pathway, they are co-transcribed into a single polycistronic mRNA.• Promoter common to all structural genes: this is the binding site of RNA polymerase.• The operator: it is a regulatory sequence, it is the site of binding of the protein of the regulation, it controls the transcription of the gene downstream.• The regulatory gene: located upstream of the operon promoter, it encodes regulatory proteins capable of binding on the operator. He owns his own promoter.

*If a mutation touch one of the genes that the operon code for, this gene will be not functional
*If a mutation touches the operator none of the enzymes will be synthesized
*If a mutation touches a repressor (a molecule which inhibits the expression of the operon genes by binding specifically to the DNA at the operator level).

Based on this, the right answers are:
Mutant 1 ==> gene A
Mutant 2 ==> repressor
Mutant 3 ==> gene B
Mutant 4 ==> promoter

You might be interested in
A wooden walkway and a sandy beach are at the same temperature. The sand feels much hotter because it has a greater _____.
Airida [17]
I'm 100% that the answer is D, thermal conductivity.

It was either C or D but D makes more sense than C does 

so your answer is D 
6 0
3 years ago
Read 2 more answers
When an ion with a charge of +2, gains two atoms, it is no longer an ion.<br> T/F
andrey2020 [161]
This is true. 
Hope this helps. 
3 0
3 years ago
Oxygen and carbon dioxide pass through the plasma membrane by _____. passive diffusion facilitated diffusion active transport
Aleonysh [2.5K]
It is passive diffusion
3 0
3 years ago
Read 2 more answers
Sedimentary rocks are formed when soil, rocks, or the remains of dead organisms undergo layering and compaction over a long peri
Tasya [4]

D.) The original items making the rock.

6 0
3 years ago
Read 2 more answers
Defend the statement found in controversy that foods, not supplements are the best and safest form of phytochemicals.
Anika [276]

Answer:

The easiest argument is the next one:

Suppose phytochemicals are like money. If I put you in a phone cabin with a lot of money and give you 30 sec to be there collecting as much money as you can, at the end you will collect not all the money and a lot of money will be lost. The same happens whit phytochemicals in supplements there are so many that your body can't use them all.

And other thing is that phytochemicals in supplements comes so concentrated that your body will be overstimulated to take this phytochemicals and that changes your normal digestion, in the time it may looks good...but if you don't take supplements anymore, your body will feel the lost and the physical results would be awull.

8 0
3 years ago
Other questions:
  • Why is DNA evidence so reliable in determining identity
    12·1 answer
  • What properties of water make it so critical to life and earth's processes?
    7·2 answers
  • Physical removal of an invasive species is an example of _______.
    15·2 answers
  • Where are neutrons located?
    6·1 answer
  • Why is the transfer of energy in a food chain usually only about 10 percent efficient?
    6·1 answer
  • Charles Darwin studied finches on the Galapagos Islands. While the finches on all the islands came from the same ancestors, the
    11·1 answer
  • Why is development work necessary for the development of nation?​
    8·1 answer
  • Identify the two main processes through which carbon is cycled between the
    8·1 answer
  • What are the four different types of deserts?
    15·2 answers
  • Which of these processes produces gametes in animals?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!