Homeostasis provides what kind of environment?
a. positive
b. constant
c. limiting
d. changing
e. chemical and physical
B
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How does a macrophage (immune cell) consume a bacteria?
A. phagocytosis B. endocytosis C. exocytosis D. receptor-mediated endocytosis E. pinocytosis
Before messenger RNA is mature,
a. all exons are deleted and removed. b. a cap and a tail are provided. c. anticodons are assembled. d. the transfer RNA transfers the messenger RNA to the ribosome. e. the single RNA strand duplicates itself in much the same way as DNA.
A genomic library is a collection of:
a. plasmid fragments that are spliced into DNA. b. DNA fragments that are spliced into plasmids. c. intron fragments that are spliced into plasmids. d. exon fragments that are spliced into bacterial cells. e. gene fragments that are spliced into main bacterial chromosom
The maximum population density of a given species that a defined geographical area can sustain over time is known as the:
A) carrying capacity. B) ecosystem capacity. C) community capacity. D) maximum yield.