Explain how the baroreflex serves as an example of homeostasis and negative feedback.
What will be an ideal response?
Answer: Helps maintain around relatively constant levels; baroreceptors comprised of intrinsic and extrinsic control; baroreceptor serves as negative feedback if blood pressure decreases, sympathetic activity increases, which results in increased heart rate, increased contractility, and increases resistance by vasoconstriction of arterioles to return blood pressure to normal
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A. C6H12O6. B. ATP. C. CO2. D. CH4. E. CH3OH
In cattle, the presence or absence of scurs follows a sex-influenced pattern of inheritance. A heterozygous male has _______ and a heterozygous female has _______
A. Y-linked, X-linked B. no scurs, scurs C. X-linked, Y-linked D. scurs, no scurs
Archaeal cells are about ________ bacterial cells.
A. the same size as B. ten times smaller than C. ten times larger than
What are the main functions of DNA polymerase?
A.) breaks hydrogen bonds and exposes bases B.) holds DNA strands apart and attracts bases C.) zips and unzips the double-stranded DNA D.) binds nucleotides and corrects base pair errors