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
Yakvenalex [24]
3 years ago
14

A molecule that is important for cell functioning cannot diffuse through the plasma membrane, but needs a protein that can open

and close to allow the molecule to diffuse. What is this protein called?

Biology
1 answer:
Lorico [155]3 years ago
5 0

Answer:

Channel protein.

Explanation:

Channel protein have gate that opens and close which allow the passage of polar substance or ions to move to permeable membrane of the cell by diffusion. They are water filled and allow the movementof charged molecules inside and outside the cell membrane i.e polar molecules move through non polar bilayer of the cell membrane.

You might be interested in
How can plants contribute to chemical and mechanical weathering
aliya0001 [1]

Answer:

The seed of a tree may sprout in soil that hasa collected in a cracked root. As the roots grow, they widen the crakcs, eventually breaking the rock into pieces. - mechanical weathering

4 0
4 years ago
Rna processing drag the correct labels under the diagrams to identify the events of rna processing.
Elena-2011 [213]
In the beginning <span>of the RNA strand as a cap, a modified guanine nucleotide is added. After this, there is a removal of those segments of the RNA strand that do not actually code for the protein. And those RNA’s segments that do code for the protein are reconnected. And forking a tail, extra adenine nucleotides are added to the end of the RNA strand. The mRNA or messenger RNA which is already completed will then leave the nucleus. This whole process is called the RNA processing. Before the RNA copy of a protein encoding can be transported out of the nucleus and translated into protein, it must be first be modified in several ways. A precursor of mRNA, pre-mRNA is the primary transcription product of a gene. </span>
3 0
4 years ago
In cod fishing, older and larger fish are more likely to be retained in nets than younger and smaller fish. Despite the removal
AlexFokin [52]

Answer:

D. Selection has led to decreases in the size of fish at the age of reproductive maturity.

Explanation:

The larger body size of the fishes is not an adaptive trait as it reduces the survival chances of these fishes. The process of natural selection tends to increase the frequency of the traits that increase the survival fitness of the organisms. Here, the fishes with smaller body size at the reproductive age have greater chances of survival and would reproduce more to leave more progeny. Over the generations, the selection pressure would increase the proportion of fishes that are smaller during reproductive age.

4 0
3 years ago
Read 2 more answers
1. Compare How is temperature related to heat?
Alexxx [7]
Temperature is related to heat by science
4 0
4 years ago
What happens during G2 phase?
777dan777 [17]

Answer:

C. Organelles are manufactured.

8 0
3 years ago
Other questions:
  • Jenn and her friends are pushing her car from the back with a force of 1407 N. Which of the following forces if applied to the f
    11·1 answer
  • According to the dichotomous key, stentor would be a member of the kingdom
    10·1 answer
  • Dopamine is a neurotransmitter involved in the reward pathways in the brain, and its decreased activity has been associated with
    6·2 answers
  • A student drew the following flowchart to show the movement of nutrients.
    6·2 answers
  • Which of the following is true?
    6·2 answers
  • The following is a list of the steps that occur in the production of an auditory sensation. 1. The pressure wave distorts the ba
    11·1 answer
  • Why is the nucleus considered the command center of the cell?​
    15·2 answers
  • What are two of the products of the kerbs cycle
    5·1 answer
  • What is natural selection?
    7·1 answer
  • I need help. please quickly answer if possible
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!