In contrast to the cephalic and absorptive phases, the fasting phase is characterized by high blood levels of ________ and low levels of _______.

(a) glucagon; insulin
(b) pepsin; insulin
(c) insulin; glucagon
(d) insulin; pepsin


(a) glucagon; insulin

Biology & Microbiology

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When mature, the ovary is referred to as a(n) ____ that encloses the angiosperm seed

a. ovule

b. endosperm c. fruit d. carpel e. inflorescence

Biology & Microbiology

The CFTR is a normal membrane protein used to move chloride ions out of a cell by active transport. This is an example of

A. a reduction reaction. B. a reaction coupled with the hydrolysis of ATP. C. an oxidation reaction. D. equilibrium. E. a reaction coupled with the production of ATP.

Biology & Microbiology

Choose the one most appropriate letter for each.

A. sharks B. crocodile C. placental mammal D. caecilians E. lancelets F. birds G. snakes H. placoderms I. lampreys J. opossum K. tunicates L. platypus M. bony fishes N. salamanders

Biology & Microbiology

The sex chromosome complement of a normal human female is

A) XO. B) XX. C) XY. D) YY.

Biology & Microbiology