Question

question 6
in the picture below, the letters a, b and c correspond, respectively, to:
leading strand, okazaki fragment, lagging strand.
lagging strand, okazaki fragment, leading strand.
template strand, mrna, coding strand.
coding strand, mrna, template strand.
question 7
translation is the process of
a. replicating a single - stranded dna molecule.
b. synthesizing a protein using information from a messenger rna.
c. synthesizing an rna molecule using a dna template.
d. synthesizing a dna molecule from an rna template.

Explanation:

• Question 6:
• In transcription, the DNA strand that has the same sequence as the mRNA (with T replaced by U) is the coding strand. The strand that is used as a template for mRNA synthesis is the template strand. mRNA is synthesized from the template strand.
• Looking at the labels:
• Label A: The DNA strand with the sequence complementary to the mRNA (in terms of base - pairing rules for DNA - RNA interaction) is the template strand.
• Label B: The molecule with Uracil (U) bases is mRNA.
• Label C: The DNA strand that has a sequence similar to mRNA (with T instead of U) is the coding strand.
• Question 7:
• Option A: Replicating a single - stranded DNA molecule is not translation. DNA replication is a different process.
• Option B: Translation is the process of synthesizing a protein using information from a messenger RNA. tRNA molecules bring amino acids to the ribosome, and the ribosome reads the mRNA sequence to assemble the protein.
• Option C: Synthesizing an RNA molecule using a DNA template is transcription, not translation.
• Option D: Synthesizing a DNA molecule from an RNA template is reverse - transcription (carried out by reverse - transcriptase in some viruses), not translation.

Answer:

Question 6: Template strand, mRNA, coding strand.
Question 7: B. synthesizing a protein using information from a messenger RNA.