Which of the following do nonvascular plants
lack?
a. spores
b. gametes
c. zygotes
d. seeds
e. more than one of these
D
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Which of the following is correct concerning F factors?
A. It may integrate into the host chromosome B. It stands for fertility factor C. It allows conjugation to occur D. F+ bacteria act as donor strains in conjugation E. All of the answers are correct
Which of the following is the most notable symptom of infection with Norovirus?
A. Fever B. Constipation C. Headache D. Vomiting E. Skin rash
Which of the following would NOT be likely to pass easily through capillary walls?
a. erythrocytes b. glucose c. ions d. water e. carbon dioxide
If you were given a bacterial strain with a mutation in the promoter region of the trp operon the most likely effect would be
A. lack of expression of just the first gene in the operon. B. interference with RNA polymerase binding. C. enabling the trp operon to be expressed in the absence of tryptophan. D. derepression of the trp operon. E. to block the repressor from binding.