Site-specific recombination systems
A. depend on enzymes that are often specific for sequences within the host.
B. do not depend on extensive nucleotide sequence homology.
C. are features of some viruses.
D. All of the choices are correct.
Answer: D
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Put the following events of elongation in prokaryotic translation in chronological order. 1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator
Put the following events of elongation in prokaryotic translation in chronological order. 1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator tRNA 4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA 5. Attachment of the large subunit A) 1, 2, 3, 4, 5 B) 2, 1, 4, 3, 5 C) 5, 4, 3, 2, 1 D) 1, 2, 3, 5, 4
Which is true of aminoglycosides?
A. They are bacteriostatic. B. They irreversibly bind to the 30S ribosomal subunit. C. They block peptidoglycan synthesis. D. They are bactericidal. E. They irreversibly bind to the 30S ribosomal subunit AND they are bactericidal.
In animals, when ATP concentrations are high,
glucose is converted into
a. starch. b. glycogen. c. pyruvate. d. carbon dioxide. e. glycerol
Which city would have the largest variation in daylight hours between the summer solstice and the winter solstice?
A) New York, New York B) Los Angeles, California C) Miami, Florida D) Montreal, Canada