The reactant in an enzyme-catalyzed reaction is the

A) product.
B) allosteric inhibitor.
C) activation energy.
D) active site.
E) substrate.


E

Biology & Microbiology

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The ____ is the initial opening between the developing gut and the outside environment for most animal embryos

a. schizocoelom b. mesoglea c. archenteron d. enterocoelom e. blastopore

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The type of RNA that carries protein-building

information is called

a. ribosomal RNA. b. transfer RNA. c. messenger RNA. d. reader RNA. e. translator RNA

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In a rank-abundance curve comparing two communities, the community with the greater species richness is characterized by a

A) lesser length of the curve and a more gradual slope. B) lesser length of the curve and a steeper slope. C) greater length of the curve and a more gradual slope. D) greater length of the curve and a steeper slope.

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Which procedure would you use to detect a nutritional mutation in microorganisms?

A) Visible inspection B) Replica plating C) Controlled crosses D) Isolation at high temperature E) Plating on antibiotic-containing medium

Biology & Microbiology