Which of the following statements about vitamins is false?
a. Water-soluble vitamins include vitamin C.
b. Taking too many vitamins, particularly fat-soluble vitamins, can be harmful.
c. Fat-soluble vitamins include vitamin B2.
d. Water-soluble vitamins, if consumed in excessive amounts, will be excreted in the urine.
e. Water-soluble vitamins are picked up by individual cells from capillary beds.
C
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The ?-jelly roll of the Lpt system functions to
A. help translocate assembled LPS across the outer membrane of the bacterial cell. B. help attach the O-antigen to core oligosaccharide moieties during synthesis of LPS. C. help anchor the newly positioned LPS on the bacterial cell surface. D. help hide lipid A from the hydrophilic periplasm during LPS transport to the membrane.
A single molecule of glucose requires _____ "turns" through the citric acid cycle for its chemical energy to be completely harvested
A. 1 B. 2 C. 3 D. 4 E. 5
How does exponential growth appear on a graph?
A) as a straight line B) as an "S" curve C) as a "J" curve D) as a wavy line that goes up and down regularly
How is simple diffusion different from other types of passive transport?
a. Simple diffusion does not require a permease. b. Simple diffusion requires ATP. c. Simple diffusion only brings material into the cell, not out of it. d. Simple diffusion is only the diffusion of water.