A millicurie, a unit of radioactivity, is
(a) a tenth of a curie.
(b) a hundredth of a curie.
(c) a thousandth of a curie.
(d) a millionth of a curie.
(c) a thousandth of a curie.
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Alternate forms of the same gene are called
A. homologues. B. genotypes. C. cofactors. D. alleles.
Riftia tube worms contain unusual hemoglobins that bind(s)
A) H2S and O2 in order to transport these chemicals to their bacterial symbionts. B) high concentrations of O2 produced by their photosynthetic symbionts. C) sulfate to transport this ion away from their bacterial symbionts. D) ammonia that their bacterial symbionts produce.
The function of the kidneys to concentrate urine is under the control of a negative feedback loop
Indicate whether the statement is true or false
The growth rate of a population is the difference between the population size and the death rate
Indicate whether the statement is true or false