K+ leak channels are found in the plasma membrane. These channels open and close in an unregulated, random fashion. What do they accomplish in a resting cell?
(a) They set the K+ concentration gradient to zero.
(b) They set the membrane potential to zero.
(c) They disrupt the resting membrane potential.
(d) They keep the electrochemical gradient for K+ at zero.
(d)
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Deductive reasoning is used to make ________ based on a hypothesis
A) correlations B) data C) predictions D) statistical tests
Women who have a healthy population of Lactobacillus spp. as part of the normal vaginal microbiota are less likely to get yeast infections. Which of the following terms is used to explain this observation?
A) parasitism B) mutualism C) synergism D) commensalism E) competitive exclusion
Taxol, a secondary metabolite from the bark of the Pacific yew tree, is used as a treatment for
A. diabetes. B. breast cancer. C. indigestion. D. headaches. E. high blood pressure.
Adipose tissue cells are filled with:
a. minerals b. fat c. cartilage d. fibers e. muscles