Transcription and Translation - Practice Questions
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- Biology I: Molecular and Cells - Study Guides
Class: Biology I: Molecular and Cells (BIOL 110 – 4 Credits) Course Description: Serves as the introductory course for Biology and Pre-Allied Health majors and is the prerequisite course for Anatomy and...
1. RNA differs from DNA in all the following except:
(a) RNA is a larger molecule than DNA.
(b) RNA contains uracil and DNA contains thymine.
(c) RNA is single stranded and DNA is double stranded.
(d) RNA contains ribose and DNA contains deoxyribose.
(e) None of the above.
2. Ribose differs from deoxyribose by having:
(a) an extra carbon in the ring.
(b) one less oxygen.
(c) two attached bases.
(d) an extra hydroxyl group.
(e) None of the above.
3. Uracil forms a complementary pair with __________ in RNA and __________ in DNA.
(a) adenine; thymine
(b) adenine; uracil
(c) thymine; thymine
(d) uracil; adenine
(e) adenine; adenine
4. RNA synthesis is also known as:
(a) translation.
(b) termination.
(c) transcription.
(d) elongation.
(e) reverse transcription.
5. During protein synthesis, ribosomes:
(a) attach to the DNA molecule and travel along its length to produce an mRNA molecule.
(b) transcribe mRNA to tRNA.
(c) translate mRNA into tRNA.
(d) translate mRNA into DNA.
(e) attach to the mRNA molecule and travel along its length.
6. The portion of the molecule in Figure 13-2 that contains the anticodon is:
(a) 1.
(b) 2.
(c) 4.
(d) 5.
(e) 3.
7. One of the mRNA codons specifying the amino acid leucine is 5'-CUA-3'. Its corresponding anticodon is:
(a) 3'-GAU-5'.
(b) 3'-GAT-5'.
(c) 5'-GAU-3'.
(d) 5'-GAT-3'.
(e) 3'-AUC-5'.
8. In all organisms, the AUG codon codes for:
(a) a termination tRNA molecule.
(b) the termination of chain elongation.
(c) the initiation of translation.
(d) the termination of transcription.
(e) the amino acid valine.
9. If a human gene mRNA were placed into a cell of yeast, it would be:
(a) translated into a chain of random amino acids not resembling the protein in humans.
(b) translated into the protein that is found in humans.
(c) translated into a repeating amino acid chain.
(d) integrated into the genome of the yeast.
(e) degraded immediately.
10. Introns in pre-mRNA are known to:
(a) undergo excision, whereby they are spliced out of the message.
(b) protect pre mRNA from enzyme degradation.
(c) code for specific protein domains.
(d) code for important amino acid sequences.
(e) be able to move within the mRNA, thereby giving rise to new exon combinations.
Answers
- a
- d
- e
- c
- e
- e
- a
- c
- b
- a
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