BIOLOGY 1113 Study Guide - Quiz Guide: Chemical Energy, Redox, Oxidative Phosphorylation
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Related Questions
The energy for protein synthesis comes from which of the following?
a. | The ATP used in the synthesis of aminoacyl-AMP molecules that are then converted to aminoacyl-tRNAs | |
b. | The GTP that is bound to initiation factors used in the initiation and translocation phases of translation | |
c. | The high energy C-N bond of the amino acid | |
d. | a, b, and c | |
e. | a and b |
The enzymatic process of "charging" a molecule of tRNA is similar to other enzyme catalyzed reactions. Which of the following correctly describes such similarities?
a. | Formation of an acyl-adenylate intermediate coupled to the hydrolysis of pyrophosphate in fatty acid activation is similar to reactions involved in the "charging" of tRNA. | |
b. | Proofreading and correcting abilities that prevent incorporation of the wrong molecule are analogous to the action of DNA polymerase. | |
c. | The aminoacyl-tRNA synthetase is a relatively non-specific enzyme (i.e., it can activate many different amino acids) and, in this respect, is similar to ribonucleotide reductase. | |
d. | a and b. | |
e. | b and c. |
Gene ExpressionQuestions
Question 1
#1) Match the following reactions to the correct step of proteinsynthesis by ribosomes.
___ Hydrolysis of GTP and disassembly of the translationcomplex.
___ binding of initiator aminoacyl-tRNA
___ formation of the peptide bond
___ translocation of ribosome
___ Use of 2 mole-equivalents of ATP and attachment of an aminoacid to a transfer RNA molecule
Answer Choices for Number #1
A. initiation step
B. elongation step
C. termination step
D. aminoacyl-tRNA synthetase reaction
Question 2
#2) Mark which of the following are needed for the synthesis ofRNA by RNA polymerase:
___ primer
___ ATP, CTP, GTP, UTP
___ dATP, dCTP, dGTP, dTTP
___ template
Question 3
#3) Mark which of the following are properties of a bacteria(prokaryotic) messenger RNA:
___ | It has a cap at the 5'-end. | |
___ | It has a poly-A tail at the 3'-end. | |
___ | It has a 5'-untranslated region (UTR). | |
___ | It has a 3'-untranslated (UTR) region. |
Question 4
#4) Match the following RNA molecules to their respectivefunctions in the cell.
___ transfer RNA
___ ribosomal RNA
___ messenger RNA
___ small nuclear RNA (snRNA)
Answer Choices for Number #4
A. This RNA serves as the template for protein synthesis.
B. This molecule is a molecular component of ribosomes.
C. This molecule is a component of spliceosomes and serves torecognize the exon-intron junctions
D. This RNA molecule is delivers the amino acid to the ribosome andit recognizes the appropriate codons with its anticodon loop.