Which of the following statements is true regarding hormones? Select all correct choices
A. They can act over long distances in the
body.
B. They can act as neurotransmitters.
C. They can act as transcription factors (in
conjunction with proteins).
D. They can produce effects with very small
concentrations.
E. They can be transported through the
bloodstream.
A,B,C,D,E
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There is significantly more genetic variation between human populations than within them
a. True b. False Indicate whether the statement is true or false
The smallest unit that retains the chemical and physical properties of an element is a(n) ____
a. proton b. compound c. molecule d. neutron e. atom
Due to recent changes in blood pressure guidelines, a reading of 120/80 is now considered to be:
a. a low normal reading. b. a high normal reading. c. prehypertensive. d. hypotensive (too low). e. very hypertensive (too high).
The cochlea is part of the:
A) brain. B) inner ear. C) outer ear. D) eye.