Which one of the following most specifically explains why plants need water to perform photosynthesis?

A) to provide the oxygen needed to make sugars
B) to add a hydrogen to NADPH
C) to provide electrons for the light reactions
D) to add a phosphate to ATP
E) to excite electrons


Ans: C) to provide electrons for the light reactions

Biology & Microbiology

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Which of the following is not true of the retrovirus genome?

A. It is composed of three genes flanked by LTRs. B. The gag, pol, and env genes are transcribed as three separate mRNAs. C. The env gene product is cleaved to generate viral envelope proteins. D. The gag gene product is cleaved to generate viral coat proteins. E. The pol gene product is cleaved to generate reverse transcriptase, integrase, and a protease.

Biology & Microbiology

Explain why Mendel choose seven different varieties of pea plants for his experiments

What will be an ideal response?

Biology & Microbiology

Bioluminescence of deep-sea animals may be used for all of the following except:

a. attraction of prey. b. detection and identification of mates. c. countershading. d. photosynthesis. e. startling a predator.

Biology & Microbiology

DNA is made up of many

A. nucleotides. B. RNA molecules. C. proteins. D. amino acids.

Biology & Microbiology