What must occur before you decide to urinate?
a. The sphincters relax
b. Urine enters the ureter
c. Mucosa is released into the urethra
d. stretch receptors in the bladder are activated
Ans: d. stretch receptors in the bladder are activated
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Maximum Likelihood and Bayesian Methods
A. involve the use of an evolutionary model. B. are a set of assumptions about how evolution is likely to happen. C. can be applied along with the principle of parsimony. D. ask the questions "what is the probability that an evolutionary model and proposed phylogenetic tree would give rise to the observed data and what is the probability that a particular phylogenetic tree is correct given the observed data and particular evolutionary model" respectively. E. involve the use of an evolutionary model; are a set of assumptions about how evolution is likely to happen; can be applied along with the principle of parsimony and ask the questions "what is the probability that an evolutionary model and proposed phylogenetic tree would give rise to the observed data and what is the probability that a particular phylogenetic tree is correct given the observed data and particular evolutionary model" respectively.
How would you best explain the existence of a mountain range that has abundant conifer trees, ferns, and mosses on the east side, but only sparse shrubby plants on the west side?
A. Adiabatic cooling leads to temperature gradients that produce the differing plant communities. B. Differences in solar intensity produce the differing plant communities. C. Precipitation differences due to a rain shadow on the west side produce the differing plant communities. D. Differences in the specific heat of the two sides of the mountain produce the differing plant communities.
Which of the following pairs of terms best describes the concept of membrane potential?
a) diffusion / facilitated diffusion b) concentration gradient / electrical gradient c) passive processes / active processes d) low concentration / high concentration e) selective permeability / osmosis
Which of the following is NOT part of the pathway that water and dissolved minerals (i.e., Fe, K, Mg, etc.) follow as they move from the soil into a plant to the xylem?
A. through plasmodesmata B. between cells C. through apoplastic transport D. through phloem E. through symplastic transport