There is evidence that increased levels of CO2 in the atmosphere may increase Earth's surface temperature. How might this affect the spread of mosquitoes and malaria? Select all that apply
A. Warmer temperatures may increase the
habitat range of mosquitoes.
B. Warmer temperatures may result in
malaria cases in new regions.
C. Warmer temperatures will have no affect
on mosquitoes or the incidence of malaria.
D. Warmer temperatures will kill off
mosquitoes, thereby decreasing malaria
cases.
A,B
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Which of the following is not a helminth that causes primarily intestinal symptoms?
A. Diphyllobothrium latum B. Taenia solium C. Trichuris trichiura D. Enterobius vermicularis
Four of the five answers are correct statements about E. coli. Select the exception
a. It grows easily in a laboratory. b. It is a rod-shaped species of proteobacteria. c. It is widely used in industrial biotechnology. d. It is capable of photosynthesis. e. It is a normal inhabitant of the gut.
Which statement is true?
1.The hydrogen bonding of cytosine to guanine is an example of complementary base pairing. 2.Adenine always pairs up with guanine in DNA, and cytosine always teams up with thymine. 3.Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base. 4.When adenine base pairs with thymine, they are linked by three hydrogen bonds. 5.In the DNA of all species, the amount of cytosine never equals the amount of guanine.
In the carbon cycle, one of the ways in which carbon is returned to the atmosphere is by respiration
____________________ Indicate whether the statement is true or false.