Which of the following is not internal work?
a. energy required for active transport.
b. energy required to pump blood.
c. energy use to power skeletal muscle contractions for body movements
d. energy used during synthetic reactions.
e. energy used to maintain body posture.
C
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What compound coverts trypsinogen into trypsin?
a. pancreatic lipase b. pepsin c. chymotrypsinogen d. enteropeptidase e. procarboxypeptidase
Chemiosmosis:
a. releases CO2. b. extracts energy from a H+ concentration gradient. c. to reduce NAD. d. to ferment pyruvic acid to lactic acid. e. none of these answers.
Blood is drained from the lower portion of the large intestine by the
A) superior mesenteric vein. B) celiac trunk. C) intestinal vein. D) inferior mesenteric vein. E) gastro-epiploic vein.
The smallest structures that biologists consider to be living are __________.
A. organisms B. organs C. macromolecules D. cells E. organelles