1. Use the following information to answer the question(s) below. A transfer RNA (#1) attached to the...
Question:
1. Use the following information to answer the question(s) below. A transfer RNA (#1) attached to the amino acid lysine enters the ribosome. The lysine binds to the growing polypeptide on the other tRNA (#2) in the ribosome already. Where does tRNA #2 move to after this bonding of lysine to the polypeptide?
A. directly to the cytosol
B. A site
C. P site
D. E site
E. exit tunnel
2. How is a mutation in a bacterial cell’ that deletes three base pairs 10 base pairs downstream from the +1 site likely to affect transcription and why?
A. Initiation will be inhibited because sigma cannot bind to the promoter.
B. Initiation will be inhibited because RNA polymerase core enzyme cannot bind to the promoter.
C. Termination will not occur because hairpin secondary structure cannot form.
D. The mRNA transcript will be missing three base pairs in its sequence.
E. A three-base-pair deletion is too small to have an effect.
3. During the initiation phase of translation in bacteria, once the ribosome is completely assembled, at which site of the ribosome is the initial incoming aminoacyl tRNA found?
A. E site
B. P site
C. A site
D. f-Met site
E. Aminoacyl site
4. Which part(s) of eukaryotic RNA transcripts are removed, and does this occur before or after translation?
A. Introns, after
B. Introns, before
C. Exons, after
D. Exons, before
E. none of the above; this doesn’t happen in eukaryotes.
5. In addition to an appropriate buffer to enable reactions to take place, which of the following substances will be required in the test tube to allow for bacterial transcription to occur?
I. primer
II. DNA template
III. DNA polymerase
IV. RNA polymerase
V. sigma
VI. dNTPs
VII. NTPs
A. I, II, IV, V, and VI
B. I, II, IV, V, and VII
C. II, IV, V, and VII
D. I, II, III, and VI
All seven substances will be required: I, II, III, IV, V, VI, and VII
Intermediate Accounting
ISBN: 978-0324592375
17th Edition
Authors: James D. Stice, Earl K. Stice, Fred Skousen