Multiple Choice
Which of the following best describes the flow of information in cells according to the central dogma of molecular biology?
341
views
15. Gene Expression
Central Dogma
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is a true statement concerning protein synthesis?
A
Protein synthesis involves the translation of mRNA into a polypeptide chain.
B
Protein synthesis is initiated by DNA polymerase.
C
Protein synthesis occurs in the nucleus.
D
Protein synthesis requires the direct involvement of lipids.
Verified step by step guidance1
Begin by understanding the process of protein synthesis, which involves two main stages: transcription and translation.
Transcription occurs in the nucleus where the DNA sequence of a gene is transcribed into messenger RNA (mRNA). This process is facilitated by RNA polymerase, not DNA polymerase.
Once mRNA is synthesized, it exits the nucleus and enters the cytoplasm where translation occurs. Translation is the process of converting the mRNA sequence into a polypeptide chain, which will fold into a functional protein.
Translation takes place in the ribosome, where transfer RNA (tRNA) molecules bring amino acids to the ribosome, matching the mRNA codons with the correct amino acids to form a polypeptide chain.
Protein synthesis does not require the direct involvement of lipids. Lipids are primarily involved in forming cell membranes and energy storage, not in the synthesis of proteins.
Related Videos
Related Practice
