Some bacteria use H2S instead of H2O in photosynthesis, and they release
A) oxygen.
B) sulfur.
C) ethanol.
D) acetic acid.
E) carbon monoxide.
B
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What environmental cue is the main requirement for germination to begin? a. Temperature increases
b. Sunlight hits the seed. c. Water enters the seed. d. All of these choices. e. pH shifts to an acidic range.
The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger length. Assume that a female with brachydactyly in the heterozygous condition is married to a man with normal fingers
What is the probability that (a) their first child will have brachydactyly? (b) their first two children will have brachydactyly? (c) their first child will be a brachydactylous girl?
Epithelial tissue is least likely to:
a. contract. b. be specialized as sensory receptors. c. provide protection. d. regulate exchange of substances between parts of the body. e. produce and secrete cell products
What products of light reactions of photosynthesis are used in the Calvin cycle?
A. glucose and oxygen B. carbon dioxide and water C. oxygen and protons D. ATP and NADPH E. ADP and NADP