How does a fermenter generate proton motive force (PMF) to drive active transport?
A. Fermenters use an electron transport chain for this purpose.
B. Fermenters can reverse the direction of the ATP synthase to generate PMF.
C. Fermenters cannot generate proton motive force.
Answer: B
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Nutritive tissue within angiosperm seeds.
Choose the LETTER of the best match: A. hypocotyl B. endosperm C. scutellum D. radicle E. epicotyl
Which of the following processes is not necessary for highly accurate mitotic cell division to occur in
eukaryotic cells?
a. cell cycle regulation b. formation of the mitotic spindle c. two rounds of DNA replication d. condensation of genetic material into chromosomes e. segregation of sister chromatids into separate cells
L-lysine is an essential amino acid and must be supplied in the diet. By comparison, the stereoisomer D-lysine is not biologically active. Why can your body only utilize one form?
A. Antibodies recognize the D form and destroy it before your body can use it for nutritional purposes. B. Since the L form and D form are chiral molecules, they will bind together and inhibit utilization of the D form. C. Enzymes can only recognize a single, specific stereoisomer. D. Since the L form and D form are enantiomers, they will bind together and inhibit utilization of the D form.
What type of cells do the apicomplexan parasite Plasmodium infect?
A. Blood only B. Liver only C. Brain only D. Both blood and liver E. Blood, liver, and brain