Substances such as alcohol that promote the formation of urine are known as ________
A) diuretics
B) renal stimulators
C) antidiuretics
D) hormones
A
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You observe two groups of freshwater fish that spawn at the same time of the year and in the same pond. After females lay their eggs on the pond bottom, males of both species attempt to fertilize them
After some investigation you realize that sperm from both species fertilize the eggs, but embryonic development stops shortly after fertilization when the eggs are fertilized by one species of males, but not by the other. This is an example of ______-zygotic reproductive isolation between the two species. A. pre B. post
If multiple fragments from a genome have been cloned into bacteria, how can a researcher identify the
bacteria that contains the particular sequence they are interested in?
a. The bacteria containing the gene of interest are antibiotic resistant and unable to digest Xgal. b. The DNA purified from individual colonies of bacteria is probed with a short, single stranded DNA fragment that is complementary to the gene of interest. c. The scientists have to sequence all of the DNA from all of the white bacterial colonies; fortunately computers let us automate this process. d. The scientists have to sequence all of the DNA from all of the blue bacterial colonies; fortunately computers let us automate this process. e. We have to isolate the DNA of interest before transforming it into the bacteria. That is the only way to know which bacteria have the DNA of interest.
All of the following are associated with nucleic acid structure EXCEPT
A) ribose. B) hydrogen bonds. C) uracil. D) ionic bonds. E) phosphate.
Which of the following is not endothermic?
A. turkey B. fish C. rabbits D. mice E. pigeon