Flowering plants originated during the
A. Jurassic Period.
B. Devonian Period.
C. Permian Period.
D. Cretaceous Period.
E. Tertiary Period.
Answer: D
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The F plasmid carries the information for
A. antibiotic resistance. B. recipient cell DNA replication. C. the Y chromosome. D. the sex pilus. E. antibiotic resistance AND the Y chromosome.
A retrovirus produces an enzyme, called reverse transcriptase, which copies its RNA genome into DNA. This is opposite of the central dogma because
A) a virus is not an organism. B) a virus lacks genetic material. C) the central dogma states that RNA is copied into DNA. D) the central dogma states that DNA is copied into RNA.
Both an activator and a repressor are bound to the lac operon. What effect will this have on lac transcription?
a. increase b. decrease c. prevent d. no effect
Glucose-6-phosphate is trapped within the cell because
__________. Fill in the blank(s) with the appropriate word(s).