The set of genes in bacteria that are linked together and transcribed as a single unit is referred to as a(n)
A. operon.
B. regulon.
C. operator.
D. repressor.
A
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A plant's ability to absorb carbon dioxide is reduced when:
A. water is limited B. temperatures are extreme C. stomata are closed D. the epidermis is lacking E. mesophyll cells lack air spaces
What phenomenon results from the runoff of fertilizers from agricultural and residential areas causing the aquatic algae in bodies of water to grow prolifically?
A) competitive exclusion B) habitat fragmentation C) eutrophication D) overexploitation
For diffusion to occur, there must be
A) a gradient. B) water. C) ATP. D) a membrane.
A childhood illness caused by a herpesvirus and characterized by a "rosy" rash all over the body is known as
A) chickenpox. B) kissing disease. C) CMV. D) monkeypox. E) roseola.