Which of the following is NOT related to solar energy?
A. Solar power tower
B. Flate-plate solar collector
C. Photovoltaic cell
D. Thermal mass
E. Hydrogen fuel cell
Answer: E. Hydrogen fuel cell
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These individuals determined that DNA was responsible for the process of transduction in T2 phage
A. Hershey and Chase B. Avery, Macleod, and McCarty C. Watson and Crick D. Creighton and McClintock
In an isolated population of fruit flies, 4 percent of the individuals have pink eyes, a homozygous recessive condition,
and 96 percent have the dominant black eye phenotype. What percentage of the population are heterozygotes?
a. 32% b. 16% c. 48% d. 88% e. 4%
Why do X-linked disorders affect males more often than females?
a. The disorders are lethal in female embryos so affected females are unseen b. Females that carry the trait usually have one functional allele. c. Carrier mothers pass the mutated allele to all their sons. d. Affected fathers pass the X-linked recessive allele to all their sons.
Sensory nerves communicate the strength of a stimulus by
a. the magnitude of the voltage change across the membrane during the action potential. b. the speed at which the action potentials are transmitted down the axon. c. the number of action potentials transmitted down the axon. d. a and b. e. a and c.