A human female haploid cell has which sex chromosome combination?
a. XX
b. XY
c. YY
d. X
e. Y
ANSWER: d
Biology & Microbiology
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The unit of heredity is the ____________
Fill in the blank(s) with correct word
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The rate of diffusion is affected by the permeability of the membrane to the diffusing solute
a. True b. False
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Which organ system filters wastes from the
blood?
a. respiratory b. urinary c. digestive d. endocrine e. circulatory
Biology & Microbiology
Serves as an intracellular second-messenger molecule
a. Adenylate cyclase b. G-protein c. Carrier protein d. cAMP e. Ion channel receptor protein
Biology & Microbiology