Organisms that possess more than two complete sets of chromosomes are said to be
A) haploid.
B) polyploid.
C) diploid.
D) hybrids.
Answer: B
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On Earth, solar energy is most intense at
A. the South Pole. B. the North Pole. C. 60° North latitude. D. the equator. E. 60° South latitude.
Energy-requiring reactions can occur in biological systems because they can be coupled with reactions that are
A) unlikely. B) not spontaneous. C) endergonic. D) exergonic. E) spontaneous and endergonic.
The production of second messengers in signal transduction offers at least two advantages, speed and
A. reversibility. B. amplification. C. one-to-one stoichiometry. D. specificity. E. affinity.
Finding co-inheritance of a SNP variant and a disease tells scientists that ____________________
(a) everybody who carries this SNP will get the disease. (b) sequences within the SNP cause the disease. (c) a gene important for causing the disease is linked to the SNP. (d) SNPs on other chromosomes will not be co-inherited with the disease.