Aerobic metabolism (select all correct choices):
A. occurs in the mitochondria.
B. provides energy for longer-term,
sustainable activity than does anaerobic
metabolism.
C. leads to the production of energy-rich
NADH and FADH2 molecules.
D. leads to the production of lactic acid in
muscle cells.
E. utilizes oxygen at the end of the electron
transport chain, releasing water.
A,B,C,E
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In light-dependent reactions, hydrogen ions are transported into the thylakoid membrane. What drives the
movement of these ions?
a. passive diffusion of ions from high to low concentration b. passive diffusion of ions from low to high concentration c. active transport of ions driven by the hydrolysis of water into oxygen d. active transport of ions driven by energy from the electron transport chain e. active transport through the enzyme ATP synthase
Filtration occurs in the region labeled____
a. 1 b. 2 only c. 3 only d. 4 e. 2 and 3
What does it mean for an allele to become fixed, and what does it imply?
A. The frequency of the fixed allele has become 0% because it was detrimental. B. The frequency of the fixed allele has become 0% and is no longer present. C. The frequency of the fixed allele has become 100% because it is beneficial. D. The frequency of the fixed allele has become 100% and other alleles are lost.
According to the primate family tree, the modern species most closely related to the humans is the:
A) orangutan. B) chimpanzee. C) lemur. D) gorilla.