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Biochemistry
‣
DNA Structure and Replication
See What Others Are Saying!
Question
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?
Options
A. B
B. H
C. S
D. None of these
Correct Answer
H
More questions
1. An isocratic elution in HPLC is one in which the composition of the solvent
Options
A. remains constant
B. changes continuously
C. changes in a series of steps
D. none of these
Show Answer
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Discuss
Correct Answer: remains constant
2. What happens after glycolysis when oxygen is available as an electron acceptor?
Options
A. Pyruvate is formed
B. NADH is produced
C. Fermentation
D. Oxidative phosphorylation
Show Answer
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Discuss
Correct Answer: NADH is produced
3. Nucleoside is a pyrimidine or purine base
Options
A. covalently bonded to a sugar
B. ionically bonded to a sugar
C. hydrogen bonded to a sugar
D. none of the above
Show Answer
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Discuss
Correct Answer: covalently bonded to a sugar
4. Specialized transduction occurs when
Options
A. the bacteriophage incorporates randomly in the bacterial chromosome
B. the bacteriophage never incorporates into the bacterial chromosome
C. the bacteriophage always incorporates at the same position in the bacterial chromosome
D. none of the above
Show Answer
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Discuss
Correct Answer: the bacteriophage always incorporates at the same position in the bacterial chromosome
5. Polyprotic acids such as H
3
PO
4
, can act as acid-base buffers
Options
A. only in combination with polyprotic bases
B. if their concentration is kept low
C. at pH values around neutrality
D. at pH values around any of their
pK
a
's
Show Answer
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Discuss
Correct Answer: at pH values around any of their
pK
a
's
6. Stereo chemical configuration of all a-amino acids derived from proteins is
Options
A. L
B. D
C. L and D
D. None of these
Show Answer
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Discuss
Correct Answer: L
7. Bacterial protein called catabolic activator protein (CAP) is an example of
Options
A. negative control of gene expression
B. positive control of gene expression
C. second type of positive control of gene expression
D. none of the above
Show Answer
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Discuss
Correct Answer: second type of positive control of gene expression
8. A mutation in the tip binding site of the repressor would result in
Options
A. constitutive trp operon expression
B. inducible trp operon expression
C. no operon expression
D. none of the above
Show Answer
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Discuss
Correct Answer: constitutive trp operon expression
9. PCR is an abbreviation for
Options
A. Protein Change Reaction
B. Polymerase Chain Reaction
C. Positive Charge Reaction:
D. Preliminary Change Rate
Show Answer
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Discuss
Correct Answer: Polymerase Chain Reaction
10. According to the fluid mosaic model of cell membranes,
Options
A. the most common type of molecules in the membrane are proteins
B. basic membrane structure results from how the proteins interact with water
C. the membrane is a highly mobile mixture of phospholipids and proteins
D. the unique properties of cell types are determined by their phospholipids
Show Answer
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Discuss
Correct Answer: the membrane is a highly mobile mixture of phospholipids and proteins
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More in Biochemistry:
Allosteric Effects
Amino Acid Metabolism
Anti Bodies
Antigen
ATP Synthesis and Fatty Acid Oxidation
Carbohydrate
Cell Signalling and Transduction
Cell Structure and Compartments
Chromatography
Disease Associated with Immune System
DNA Structure and Replication
Enzymes
FT IR Spectroscopy
Gas Chromatography
Gel Electrophoresis
Genetic Code and Regulation
Genetic Regulation Prokaryotes
Glycolysis
HPLC
Immune Response
Immune System
Immunological Techniques
Lipid
Membrane Structure and Functions
Minerals
Nitrogen Metabolism
NMR Spectroscopy
Nucleic Acids
Oxidative Phosphorylation
Photosynthesis and Respiration
Polymerase Chain Reaction
Protein and Nucleic Acid Interactions
Protein Purification
Protein Stability
Protein Structure
Protein Synthesis
Recombinant DNA Technology
RNA Structure
Spectroscopy
Structure and Properties of Amino Acids
Structure and Properties of Peptides
TCA Cycle
Thermodynamics and Free Energy
Transcription and Regulation
UV Luminance Spectroscopy
Vitamins and Coenzymes
Water, pH and Macromolecules