Chemical digestion begins in the:
A) large intestine. B) mouth. C) small intestine. D) stomach.
Answer: B
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A substrate is another term for a(an)
a. enzyme. b. product. c. reactant. d. active site. e. cofactors
What happens first following a neuron stimulation?
a. Sodium ions enter the cell. b. Sodium ions leave the cell. c. Potassium ions enter the cell. d. Potassium ions leave the cell. e. Potassium ions are involved in positive feedback.
Which is not one of the categories used to classify an organism based on its nutrition?
A) source of energy for making ATP B) ability to fix carbon C) initial source of electrons for reduction reactions D) source of energy for making ATP and ability to run either catabolic or anabolic pathways E) ability to run either catabolic or anabolic pathways
In E. coli, the genes for utilization of maltose are at various locations across the chromosome but are activated by the same maltose activator protein. This is an example of a(n)
a. operon. b. regulon. c. riboswitch. d. two-component regulatory system.