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
joja [24]
3 years ago
14

The lac operon in E. coli controls the gene expression of the enzymes that digest lactose in the cell. In the presence of lactos

e, the lac operon will turn on and the genes will be expressed. Place the events of gene regulation by the lac operon in order of their occurrence, from the introduction of lactose to the environment to when the cell begins to digest lactose.
A. The repressor is removed from the operator
B. RNA polymerase binds to the promotor region
C. Lactose enzymes genes are expressed by the operon
D. The regulatory gene expresses the repressor protein
E. The repressor is inactivated by lactose
Biology
1 answer:
larisa [96]3 years ago
5 0
Answer is b,a,d,c,e

Explanation

The Lac Operon is called lactose operon is a cluster of genes with a promoter. The bacteria uses lactose as the source of energy by the proteins coded by genes. This is present in Prokaryotes.

The regulatory gene codes for repressor protein. The repressor binds to lactose and prevent its binding to operator. Thus,RNA polymerase is prevented from binding the promotor. The transcription of genes inhibited . That means correct order is b a d c e
You might be interested in
In Griffith's experiments with Streptococcus pneumoniae, rough nonencapsulated streptococci were converted into smooth encapsula
larisa86 [58]

Answer:

The correct answer is - transformation.

Explanation:

Griffith's experiment was performed by Fredrick Griffith with Streptococcus pneumoniae. Streptococcus P. are rough non encapsulated streptococci that are converted into smooth encapsulated streptococci bacteria in presence of heat-killed smooth encapsulated bacteria.

This experiment was the first experiment that showed that this bacteria can get DNA by the process of transformation.

He suggested that the nonencapsulated bacteria had been transformed into the encapsulated smooth bacteria strain by the transformation process that was somehow part of the dead encapsulated strain bacteria.

Thus, the correct answer - transformation.

3 0
3 years ago
Describe what happens to water particles when ice metls.
leva [86]

Answer:Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. In the melting process, the water molecules actually absorb energy.

Explanation:

7 0
3 years ago
Read 2 more answers
Three main steps in the process of DNA replication. Name the enzymes that go with each step
Llana [10]

Answer:

The three mains in the process of DNA replication are 1 initiation 2 elongation 3 termination.

Explanation:

Enzymes those function during initiation

1 Helicase.

2 single strand binding protein.

3 Topoisomerase.

Enzymes those function during elongation

a DNA polymerase alpha

b  DNA polymerase delta

c  DNA polymerase epsilon

Enzymes those function during termination

1 Replication protein A

2 Replication factor C

6 0
3 years ago
What process is used to form polymers from monomers
abruzzese [7]

Answer:

It's condensation.....

6 0
2 years ago
An example of a secondary consumer is a _________.
erastovalidia [21]
A panther because it eats the primary consumer which would be the deer.
an oak tree is the producer (bottom of the food chain)
the deer is the primary consumer because it eats grass which would also be a producer
and the hawk would be the top predator because it eats a snake which would eat a mouse which would feed on a producer :)
6 0
3 years ago
Other questions:
  • I need help find this out
    8·1 answer
  • Next-generation sequencing reveals six new mutations have occurred in the coding regions of genes in an individual diploid fly.
    11·1 answer
  • Which statement accurately describes the relationship between the brain and addiction?
    15·1 answer
  • Which lists the steps of mitosis in the correct order? metaphase, anaphase, prophase, telophase prophase, metaphase, anaphase, t
    7·2 answers
  • 3. The
    12·1 answer
  • What are the characteristics of high energy waves?
    12·2 answers
  • As water is cooled from 4°C to 0°C, its density is...
    9·2 answers
  • An organism with two different alleles for a single trait is
    15·1 answer
  • The area around a cell has a high concentration of sodium ions As a result the cell membrane expands and burst which problems wa
    7·1 answer
  • What bond is the bond between two water molecules ?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!