NADPH is made by
A. the Krebs cycle.
B. glycolysis.
C. the Calvin cycle.
D. the passing of electrons from photosystem I to an electron transport chain.
E. chemiosmosis.
Answer: D
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In bacteria, synthesis of long chain polysaccharides, such as starch and glycogen, have glucose donated to the end of the growing chain by ________.
A. UTP-galactose B. UDPG C. ATP-mannose D. ADP-glucose
Stromatolites are
A. layered rocklike structures formed by cyanobacteria. B. the earliest known arthropods. C. autotrophs living around deep sea vents. D. heterotrophs found in marine environments. E. fossilized coral reefs.
Fossil evidence indicates that the maker of stone tools found at Olduvai Gorge in Africa was probably ________
a. Homo habilis b. Homo erectus c. Homo sapiens d. Homo heidelbergensis
Circulation in the accompanying diagram functions primarily as a(n) ____
a. an open circulatory system b. system consisting of mostly of tissue spaces c. closed circulatory system d. interstitial fluid system e. three-directional system