Which was likely the first of the following metabolic pathways or structures to evolve?
A. fermentation
B. the citric acid cycle
C. electron transport complexes I, II, and III
D. ATP synthase
E. All four probably arose at the same time in
an early prokaryote.
A
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Photosynthesis and cellular respiration are examples of ____
a. catabolism b. cleavage c. anabolism d. synthesis e. metabolism
How can microarrays help us understand cellular functions?
a. Microarrays let us study different cellular structures under different conditions. b. Microarrays let us directly measure protein expression in individual cells. c. Microarrayslet us identify which portions of a genome were being expressed in a cell at a particular time. d. Microarrays let us identify which DNA sequences are present in a particular cell type under certain conditions. e. Microarrays let us identify which portions of a genome serve as regulatory sequences.
The tissue containing nerves, blood, and lymph vessels in teeth is known as the:a
dentin. b. cementum. c. enamel. d. tooth socket. e. pulp cavity
During aerobic respiration, which stage produces the most ATP?