Producers are involved in which of the following processes?
A. photosynthesis only
B. respiration only
C. both photosynthesis and respiration
D. None of the above is correct.
C. both photosynthesis and respiration
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Which feature is unique to echinoderms?
a. Water-vascular system b. Radial symmetry c. Cephalothorax d. Ability to regenerate body parts e. Bilateral symmetry
Which hormone stimulates both leaf abscission and fruit ripening?
a. abscisic acid b. auxin c. cytokinin d. ethylene e. gibberellin
A person with a systolic blood pressure of 120 mm Hg and a diastolic blood pressure of 80 mm Hg typically has a mean arterial blood pressure of 90 mm Hg. Which of the following offers the best explanation for why the mean arterial blood pressure is 90 mm Hg, and not the average of the two pressures (100 mm Hg)?
a. The systolic blood pressure is higher than the diastolic blood pressure. b. The quantity of fluid in the person's circulatory system must be greater during the diastole. c. The diastole of the heart lasts longer than the systole of the heart. d. The systolic blood pressure is not as high as the diastolic blood pressure. e. Angiotensin, produced from a blood protein by renin, elevates the diastolic blood pressure.
On what basis does forensic biotechnology distinguish one individual from another?
A) A small tandem repeat in one person will be in a different location in the genome of another person. B) Different people will have completely different genomes. C) Different people will have a different number of tandem repeats at the same location in their genomes. D) Different people will have different mutations in their short tandem repeats.