A __________ bacterial cell is able to take up DNA from the environment.
A. competent
B. virulent
C. fertile
D. transformed
E. transduced
A. competent
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An allele:
a) will assort independently from alleles on other chromosomes. b) can be one of several alternative forms of a gene. c) can be identical to or different from its sister allele for any gene in a somatic cell. d) can be dominant or recessive. e) All of the above.
_________ are the result of B cell activation and secrete specific antibody. They are large, specialized, and the most numerous of B cell progeny.
A) TH cells B) B cells C) Plasma cells D) Mast cells
Suppose that a person has a mutation in a gene that encodes an enzyme responsible for the production of histamine. In this person, mast cells cannot produce and secrete histamine. Which of the following outcomes is most likely to happen if an injury
occurs? A) Macrophages will not be able to secrete signaling molecules. B) Neutrophils will not be attracted to the injury site. C) Neutrophils will not be able to phagocytose pathogens at the injury site. D) Macrophages will not be attracted to the injury site.
The (maximum/optimum/selective) growth temperature is the temperature at which an organism exhibits the highest growth rate.
Fill in the blank(s) with the appropriate word(s).