A woman heterozygous for color blindness (an
X-linked recessive allele) marries a man with
normal color vision. What is the probability
that their first child will be color blind?
a. 25%
b. 50%
c. 75%
d. 100%
e. none of these
A
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Each of the following is part of the energy transduction from solar energy to chemical energy except
A) light absorption by chlorophyll. B) electron flow through an electron transport system. C) unidirectional proton pumping across a membrane. D) an electrochemical proton gradient. E) All are involved in the energy transduction.
Which of the following contains the most cells?
A) an organism B) an organ system C) an organ D) tissue
The finding that virtually all organisms use the same genetic code provides the basis for declaring that the code is universal. Name at least two exceptions to such universality
What will be an ideal response?
A decrease in the production of C3 would result in
a. increased susceptibility to infection. b. increased numbers of white blood cells. c. increased phagocytosis. d. activation of C5 through C9. e. none of the above