What is the primary purpose for the receptor proteins located within the cell

1 answer:

3 0

Receptor proteins are molecules inside a cell or on its surface on which ligands bind. A ligand is any substance (e.g. a hormone, drug, functional group) that binds specifically and reversibly to another chemical entity to form a large complex. Receptor proteins found inside a cell are called internal receptors or intracellular receptors or cytoplasmic receptors. They act as regulators of mRNA synthesis to mediate gene expression. When a ligand binds to an internal receptor, the receptor changes in conformation and exposes on itself a site that can bind to DNA. The receptor joined to the ligand moves into the nucleus where it binds to a specific site on the cell DNA. Once bound, it promotes the process of transcription where information is copied from DNA to mRNA

You might be interested in

Based on the information in the table, which of the following changes is least likely to produce a phenotypic

yaroslaw [1]

GAU to GAC is least likely to change phenotype of an organism.

<h3><u>Explanation</u>:</h3>

Phenotype of an organism is defined as the physical characteristics of an organism. This phenotype is dependent on the genotype of the organisms. This means the phenotypic characters are actually the expressions of the genes of the organisms. Now the genes are expressed in form of codons that are the three nitrogen base sequences. Each codon codes for a particular amino acid which in turn polymerises to from the protein which actually forms the phenotype of the organism.

Now there are 20 amino acids and 64 codons. Thus there are more than 1 codons for a single amino acid. So, if a codon is replaced by another codon which codes for same amino acid, then the phenotype is least likely to be affected.

Both the GAU and GAC codes for aspartic acid. So the phenotype won't be affected much by this mutation

5 0

3 years ago

Explain how endocytosis, digestive enzymes and exocytosis work together to get rid of bacteria

erma4kov [3.2K]

Answer: Endocytosis brings materials to the inside of the cell while exo takes them out. Exoocytosis has the vesicle being formed in the golgi apparatus which then fuses with the membrane, while endo has the vesicle. formed from the cell membrane which then gets into the cytoplasm.

6 0

3 years ago

Pollution of a river as a byproduct of paper manufacturing is considered a(n)

vova2212 [387]

The answer is b because it is negative on our world

7 0

4 years ago

Read 2 more answers

An area where heated water rises through cracks in the ocean floor is called a hydrothermal vent.

Fynjy0 [20]

Answer:

Explanation:

True. Hydrothermal vents are basically underwater volcanos

6 0

3 years ago

Read 2 more answers

The function of coenzyme A in the citric acid cycle is most like Group of answer choices a limousine driver dropping off a coupl

notka56 [123]

Answer:

a limousine driver dropping off a couple at the school prom

Explanation:

The citric acid cycle, also known as the Krebs cycle, is a metabolic pathway by which carbohydrates, lipids and amino acids can be oxidized to carbon dioxide (CO2) and water (H2O). Coenzyme A (CoA) is a key coenzyme in the citric acid cycle. Coenzyme A acts as a carrier of acyl groups: its acetyl-coenzyme A form delivers the acetyl group to the citric acid cycle in order to be oxidized for energy production. During the citric acid cycle, Coenzyme A delivers the acetyl group to oxaloacetate (a four-carbon molecule), in order to form citrate (a six-carbon molecule that contains three carboxyl groups). Subsequently, citrate is oxidized and decarboxylated to produce a succinyl CoA, 2 CO2, and 2 NADH.

5 0

3 years ago