At a particular position along a nephron, the osmotic potential of the filtrate is 500 mOsm/L whereas the surrounding kidney's is 600 mOsm/L. Which of the following is a likely result?
a. Water will diffuse into the nephron by osmosis.
b. Water will be pumped into the nephron by active transport.
c. Water will diffuse out of the nephron by osmosis.
d. Water will be pumped out of the nephron by active transport.
e. There will be no net movement of water.
Ans: c. Water will diffuse out of the nephron by osmosis.
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An overlapping gene could be defined as __________
a. one from which no proteins can be coded b. one in which one gene is part of another gene c. one in which the same sequence of DNA codes for two nonhomologous proteins due to the presence of more than one reading frame d. Both a and c e. Both b and c
A type of horizontal gene transfer in prokaryotes, in which a cell takes up naked DNA without cell-to-cell contact, is
A. transduction. B. fixation. C. conjugation. D. transformation. E. replication.
Duplication of DNA occurs
A. during interphase. B. before meiosis II only. C. during prophase I. D. twice, before meiosis I and meiosis II.
If one was attempting to build a model that predicted a person's height-which has to be positive, why might it still be the case that you wouldn't consider this as a limited dependent variable?
A. You need an appropriate instrumental variable for height. B. It will depend on your sample size. C. It is very unlikely that the 0 boundary for height is a binding restriction in any sample of individuals. D. The sample of heights will always be a selected sample.