Question

The presence of a transit sequence directs a protein from the ________ to the ________. The presence of a transit sequence directs a protein from the ________ to the ________. signal recognition particle; nucleus cytosol; plasma membrane endoplasmic reticulum; Golgi apparatus endoplasmic reticulum; nucleus cytosol; mitochondrion or chloroplast

Answer 1

Answer:

The correct answer is "nucleus cytosol; mitochondrion or chloroplast".

Explanation:

A transit sequence, also known as signal peptide, in a protein is a series of amino acids that indicate that a protein is not synthesized matured, and a portion of the protein must be cleaved in order to have the protein in its mature form. Transit sequences serves as regulators of protein transport, since they indicate that a protein must transit from the nucleus cytosol to different organelles, such as the mitochondrion or chloroplast. Examples of this type of proteins, include: alcohol dehydrogenase, DNA polymerase, and RNA polymerase.