Channels within the structure of the cell membrane are composed of A) carbohydrates. B) disaccharides. C) phospholipids. D) proteins.

Answers

Answer 1
Answer: I believe the answer is: D. proteins

The main functions of these proteins is to allow specific substance to pass through the membrane of the cells which needed for the energy formation for cells'functions.It created through the combination of more than 20 amino acids with different functions.
Answer 2
Answer:

its proteins

Proteins. The channels within the cell membrane are composed of  

three dimensional proteins that allow the passage of specific molecules or charged atoms.


Related Questions

Which of the following carries amino acids to the site of protein synthesis
What was the variable in his experiment? a. Covering both jars. b. Covering one jar and leaving the other uncovered. c. Leaving both jars uncovered. d. There was no variable in this experiment.
Which type of bacteria live in the roots of legumes?nitrogen-fixing bacteria pathogenic bacteria aerobic bacteria rickettsia
How do obligate aerobes and obligate anaerobes differ in their interactions with the atmosphere?
Which one of the following statements about air pollution is FALSE?a. The United States has created restrictions to help reduce air pollution. b. Thirty-percent of pollution in the Untied States did not originate in the United States. c. Air pollution is only a problem in the developing world. d. Air pollution can lead to poor health.

The actual cells that the muscles are made of are called _____.

Answers

there are actually three types of cells that muscles could be made of, it could be skeletal/striated, cardiac and smooth.

In _______ mimicry, unprotected species resemble others that are distasteful.

Answers

The answer is Batesian.

Prokaryotic cells reproduce by

Answers

Prokaryotic cells reproduce by binary fission , which includes the chromosomes splitting into two equal parts.

Which animal lives in the hydrosphere and lithosphere? eagle duck shark lizard?

Answers

The hydrosphere is the part of earth covered in water. The lithosphere is the crust of the earth, or land. So, the animal that lives in both would be an amphibian, like the lizard.

The eagle doesn't live in water. 
While the duck goes into water, they do not live in the water.
The shark only lives in water.

Answer:

duck

Explanation:

The chemical reactants on the left produce ________ on the right.

Answers

In a chemical equation, the reactants are written on the left, and the products are "written" on the right.

Answer:

atp is produced from adp+p+ energy during cell respiration and photosynthesis

Explanation:

Explain what is meant by the sentence “Natural selection can act only on existing traits.”

Answers

Natural Selection is a process in which certain traits become more common or not. This is determined by the necessity of certain traits and the environment the species finds itself in. Natural selection only acts on existing traits because they are the traits active in a given species in a given environment.

Answer:

Natural Selection can only occur to living organisms.