The reactant in an enzyme-catalyzed reaction is the
A) product.
B) allosteric inhibitor.
C) activation energy.
D) active site.
E) substrate.
E
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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
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
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.
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