How many molecules of ATP are needed to reduce one molecule of carbon dioxide to carbohydrate by oxygenic phototrophs during the dark reactions of photosynthesis?
A. 10-12
B. 2
C. 4
D. 3
Answer: D
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NADPH is made by
A. chemiosmosis. B. glycolysis. C. the Krebs cycle. D. the Calvin cycle. E. the passing of electrons from photosystem I to an electron transport chain.
The hydroxyapatite that makes up the bulk of the bony endoskeleton of vertebrates is found in:
A. osteocytes. B. the extracellular matrix of osteocytes. C. the collagen. D. osteoblasts.
Science differs from other disciplines, such as history and the arts, because science relies on
A) observations. B) theories. C) facts. D) testing explanations.
Chloramphenicol binds to the 50S portion of the ribosome which will inhibit
a. transcription in prokaryotic cells b .transcription in eukaryotic cells c. translation in prokaryotic cells d. translation in eukaryotic cells