When a few intracellular mediator molecules activate several enzymes, and each of these activated enzymes activate still other enzymes, the hormone has initiated
A. a cascade effect.
B. a double loop effect.
C. a protein kinase effect.
D. a cyclic effect.
E. a negative feedback cycle.
A
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The integrative centers for autonomic activity are located in the
A) cerebrum.
B) thalamus.
C) cerebellum.
D) pituitary gland.
E) hypothalamus.
A cell which is actively involved in the detoxification of chemicals would contain large quantities of ________.
A. peroxisomes B. rough endoplasmic reticulum C. mitochondria D. ribosomes
The famous patient "H.M." could not remember events that occurred after his memory was damaged after he had brain surgery to treat his epilepsy. He retained his perceptual and motor skills, but lost his memory of new facts and events. Thus, H.M.'s deficit was in ________.
A. nondeclarative or implicit memory B. declarative or implicit memory C. nondeclarative or explicit memory D. declarative or explicit memory
mRNA is needed to synthesize ________ in the cytoplasm
A) carbohydrates B) lipids C) proteins D) phospholipids E) ATP