Which of the following would be considered a carrier of a sex-linked recessive defect?
a. a man with the defect
b. a woman with the defect
c. a father of a son with the defect
d. the normal daughter whose father had the defect
e. a son of two unaffected parents
D
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Endotoxin
A. consists of LPS. B. determines bacterial shape. C. may have different effects depending on the specific bacterial source. D. is toxic due to the effects of the peptide side chains. E. determines bacterial shape, may have different effects depending on the specific bacterial source, AND is toxic due to the effects of the peptide side chains.
In the citric acid cycle, succinate is oxidized to form
A. fumarate. B. oxaloacetate. C. malate. D. succinate. E. citrate.
Which of the following explains how genetic variation in a population of bacteria results from this process?
(A) Bacterial proteins transferred from the donor bacterium by the phage to the recipient bacterium recombine with genes on the recipient's chromosome. (B) The recipient bacterium incorporates the transduced genetic material coding for phage proteins into its chromosome and synthesizes the corresponding proteins. (C) The phage infection of the recipient bacterium and the introduction of DNA carried by the phage cause increased random point mutations of the bacterial chromosome. (D) DNA of the recipient bacterial chromosome undergoes recombination with DNA introduced by the phage from the donor bacterium, leading to a change in the recipient's genotype.
A(n) ________ is a bacterial virus which is integrated into the host cell DNA
A) lytic phage B) prophage C) plasmid D) transposon E) insertion phage