Cell membranes are composed principally of
a. carbohydrates.
b. nucleic acids.
c. lipids.
d. proteins.
Ans: c. lipids.
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The process by which electrons from the quinone pool are forced against the thermodynamic gradient to reduce NAD+ to NADH is called reverse
A) proton motive force. B) reduction. C) electron transport. D) energy flow.
All organisms have the same resource requirements
a. True, the same resources are required for all life. b. False, although similar resources may be required, the amount of each resource can vary among species
Kidneys filter water and all solutes except ___
from the blood.
a. urea b. potasium c. proteins d. chloride ions e. monosaccharides
What are the four stages of food processing, ordered from beginning to end?
A. Ingestion, digestion, absorption, elimination B. Ingestion, digestion, elimination, absorption C. Digestion, ingestion, absorption, elimination D. Digestion, absorption, ingestion, elimination