In the mammalian biological clock, the “master clock” is located in the pineal gland
____________________ Indicate whether the statement is true or false.
F, hypothalamus (suprachiasmatic nucleus)
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Which statement best describes passive transport?
A. A substance goes from an area of high concentration to an area of low concentration, and this requires energy. B. A substance goes from an area of high concentration to an area of low concentration, and this releases energy. C. A substance goes from an area of low concentration to an area of high concentration, and this requires energy. D. A substance goes from an area of low concentration to an area of high concentration, and this releases energy.
How do endotherms and ectotherms derive most of their body heat?
A. Both ectotherms and endotherms derive most of their body heat through metabolic processes. B. Ectotherms derive most of their body heat through metabolic processes, while endotherms derive most of their body heat through their environment C. Ectotherms derive most of their body heat through their environment, while endotherms derive most of their body heat through metabolic processes. D. Both ectotherms and endotherms derive most of their body heat through their environment. E. Ectotherms derive most of their body heat through their fur, while endotherms derive most of their body heat through insulating scales.
In the past decades, direct-to-consumer (DTC) genetic tests have become widespread. Which U. S. federal agency is responsible for the future regulation of these tests?
A) FBI B) EPA C) FDA D) DEA
The analysis of the nitrogenous bases of the nucleic acid of a newly discovered virus showed 20% adenine, 40% guanine, 10% thymine, and 30% cytosine. The viral nucleic acid is most likely
A. double-stranded DNA. B. single-stranded DNA. C. double-stranded RNA. D. single-stranded RNA.