Which offspring inherit all their mitochondrial DNA from their mother and none from their father?
A. sons
B. neither sons nor daughters
C. daughters
D. both sons and daughters
Answer: D
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How is a gradient of H+ ions formed across the inner mitochondrial membrane?
A. The electron transport chain uses energy from transfer of an electron donated by NADH to pump H+ across the inner mitochondrial membrane against its electrochemical gradient. B. ATP synthase generates a H+ gradient across the inner mitochondrial membrane. C. Electrons move from NADH to a chain of proteins with lower electronegativities. D. The electron transport chain uses ATP to pump H+ across the inner mitochondria membrane against its electrochemical gradient. E. The electron transport chain of proteins contains pores that are leaky to H+.
The Eustachian tube carries air from the middle ear to the
a. larynx. b. inner ear. c. pharynx. d. oval window. e. round window.
A cell in G0 state ____
a. is actively growing before cell division begins b. has a cleavage furrow and the cytoplasm is beginning to divide c. is actively replicating chromosomes d. is in cytokinesis e. has entered a resting stage and is not actively dividing
The anterior pituitary gland secretes ________. In men, this hormone causes the cells that will become sperm to be more sensitive to the effects of testosterone
Fill in the blank(s) with correct word