Prokaryotic cell mutations can be observed very quickly because the prokaryotic chromosome is

A. diploid.
B. polyploid.
C. haploid.
D. polysomal.


C

Biology & Microbiology

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Which of the following is the correct sequence of geological eras, going from oldest to most recent?

1.Cenozoic, Mesozoic, Paleozoic 2.Cenozoic, Paleozoic, Mesozoic 3.Mesozoic, Cenozoic, Paleozoic 4.Paleozoic, Mesozoic, Cenozoic

Biology & Microbiology

The study of the interactions of organisms and their physical environment is

a. biology. b. ecology. c. geology. d. paleontology. e. physiology.

Biology & Microbiology

When bound to ligand, this type of receptor changes conformation to allow ions to move down their concentration gradient across the membrane.

A. channel-linked receptor B. enzymatic receptor C. steroid hormone receptor D. G protein-coupled receptor

Biology & Microbiology

The ozone in the atmosphere can be damaged by which of the following?

A) carbon dioxide B) chlorine C) oxygen D) methane

Biology & Microbiology