Which of the following statements is true?
a. Structure/function relationships are evident at the organismal level, but not at the molecular level.
b. Evolution by natural selection led to physiologic adaptation historically, but is not relevant to extant organisms.
c. Homeostasis is the tendency toward relative stability in the internal environment of an organism.
d. Feedback control refers specifically to the homeostatic mechanisms that help organisms stop eating when they’re satiated.
c
You might also like to view...
Which organ contains 95 percent of the neural tissue in the body?
A) brain B) nerves C) spinal cord D) thalamus E) None of the answers are correct.
Arm and legs buds appear at about 28 days from
A. somitomeres. B. neural crest cells. C. apical ectodermal ridges. D. the coelom.
The exchange of chloride ions for bicarbonate through tissue capillaries is called the ________.
A. oxygen toxicity B. chloride shift C. acidosis D. Bohr effect
Curare blocks acetylcholine receptors at the motor end plate. This would result in
A. increased stimulation of the muscle. B. more acetylcholinesterase production. C. lack of calcium uptake by the muscle fiber. D. inability of the muscle fiber to respond to nervous stimulation. E. sustained contraction of the muscle.