Describe how a nonpolar steroid hormone receptor is different from a cell-surface receptor
What will be an ideal response?
Answers will vary.
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If a plant has vascular tissue, megaphylls, and seeds, but not flowers, then it is a(n)
a. fern. b. gymnosperm. c. bryophyte. d. angiosperm. e. lycophyte.
There are many kinds of animals in which males have characteristics that are clearly disadvantageous to them. Which of the following statements offers the best explanation for the retention of these disadvantageous characteristics?
A. Natural selection has not gotten around to eliminating them yet. B. Females may select males with the disadvantageous characteristics as mates over those males that lack the characteristics. C. Males may be strong enough to overcome these characteristics. D. The characteristic is probably an acquired characteristic.
The (physiology/metabolism) of an organism is all the chemical reactions that take place in the organism
What will be an ideal response?
Which of the following reactions is most likely to occur if an individual was to ingest a large dose of lemon juice?
a. There would be an increase in the amount of carbonic acid within the bloodstream. If the carbonic acid didn't form, then the pH of the individual's blood could shift toward 7.2. b. There would be a decrease in the amount of carbonic acid within the bloodstream. If the carbonic acid didn't form, then the pH of the individual's blood could shift toward 7.2. d. There would be a decrease in the amount of carbonic acid within the bloodstream. If the carbonic acid didn't form, then the pH of the individual's blood could shift toward 7.8. a