The first aminoacyl-TRNA that binds to the ribosome: a. is a special fMet-tRNAet in prokaryotes. b. is a special fMet-tRNAMet in eukaryotes. c. is a normal Met-tRNAMet in prokaryotes and eukaryotes. d. will vary, depending upon the identity of the N-terminal amino acid residue of the

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The first aminoacyl-TRNA that binds to the ribosome:
a. is a special fMet-tRNAMet in prokaryotes.
b. is a special fMet-tRNAMet
c. is a normal Met-tRNAMet in prokaryotes and eukaryotes.
d. will vary, depending upon the identity of the N-terminal amino acid residue of the
in eukaryotes.
A significant difference between prokaryotes and eukaryotes in initiation of translation is that:
a. GTP hydrolysis is required for prokaryotic initiation but not eukaryotic initiation.
b. many more initiation factors are required for prokaryotes than for eukaryotes.
c. in prokaryotes, the large subunit of the ribosome binds after the MRNA; in eukaryotes the large
subunit binds before the MRNA.
d. in prokaryotes, base-pairing between the MRNA and a rRNA determines which start codon to use; in
eukaryotes, the small subunit begins scanning the MRNA at the 5' cap until it reaches the first start
codon.
Transcribed Image Text:The first aminoacyl-TRNA that binds to the ribosome: a. is a special fMet-tRNAMet in prokaryotes. b. is a special fMet-tRNAMet c. is a normal Met-tRNAMet in prokaryotes and eukaryotes. d. will vary, depending upon the identity of the N-terminal amino acid residue of the in eukaryotes. A significant difference between prokaryotes and eukaryotes in initiation of translation is that: a. GTP hydrolysis is required for prokaryotic initiation but not eukaryotic initiation. b. many more initiation factors are required for prokaryotes than for eukaryotes. c. in prokaryotes, the large subunit of the ribosome binds after the MRNA; in eukaryotes the large subunit binds before the MRNA. d. in prokaryotes, base-pairing between the MRNA and a rRNA determines which start codon to use; in eukaryotes, the small subunit begins scanning the MRNA at the 5' cap until it reaches the first start codon.
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