alleryStart learning →What does a signal sequence do for a newly made protein?
AIt directs the protein to a compartment
BIt folds the protein into its final shape
CIt charges the tRNA with an amino acid
DIt marks the protein for immediate reuse
Answer & Solution
Correct answer: A. It directs the protein to a compartment
1. A signal sequence is a short tail of amino acids at the amino end or the carboxyl end of a protein.
2. It directs that protein to a specific cellular compartment, such as the mitochondria.
3. Once the protein arrives, the signal sequence is usually clipped off.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 15 "Genes and Proteins", section 15.5 Ribosomes and Protein Synthesis_
Keep practising Genes and Proteins
Browse all Genes and Proteins questions for CSIR NET, or explore more Biology topics.
Related questions
How long does the E. coli translation apparatus take to add one amino acid?Tetracycline blocks the A site of a bacterial ribosome. Which step does that stop?What do chaperone molecules do during protein folding?What kind of catalyst is peptidyl transferase, and where does it sit?In what order does a charged tRNA pass through the three compartments of the ribosome?Which ribosomal site does the initiator tRNA occupy as the initiation complex forms?In the Kozak consensus around a vertebrate start codon, which bases can occupy the R positWhat does the Shine-Dalgarno sequence do in an E. coli mRNA?