Most of the atmospheric oxygen occurs as a result of photosynthesis. From which of the following molecules is the oxygen derived?

A. NADH
B. glucose
C. carbon dioxide
D. chlorophyll
E. water


Answer: E

Biology & Microbiology

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Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ________ from NAD onto the alpha subunit of RNA polymerase.

What will be an ideal response?

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A) Mercury and sulfur B) Potassium and sodium C) Copper and iron D) Phosphorous and nitrogen

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When an organism moves from sun to shade, it reduces heating by conduction.

a. true b. false

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