Which of the following is true of AIDS?
a. It is equivalent to HIV.
b. It is highly contagious.
c. There is no cure for those afflicted.
d. It is caused by a bacterium.
e. It can be prevented by vaccination
C
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Evolution _____________. (Mark true (t) or false (f) for each statement.)
____ is a change in allele or genotype frequency over time ____ always results in a visible change in the physical characteristics of an organism ____ is a process that takes many, many generations ____ is only seen in unicellular organisms ____ is a natural phenomenon that is outside the influence of humans ____ can only occur in the natural environment ____ is not seen in domesticated animals ____ always results in an increase in an organism's fitness ____ is inherently random in nature ____ acts on animals but not plants What will be an ideal response?
The integrase enzyme of bacteriophage ? is required to:
A. excise the prophage from the host genome. B. degrade phage mRNA during lysogenic growth. C. bypass terminator structures downstream from the N and Cro genes. D. combine multiple DNA segments to make new genes.
Which of these is rich in unsaturated fats?
A. a fat that is solid at room temperature B. butter C. beef fat D. bacon grease E. olive oil
Pest resistant cotton plants that produce Bt were produced by selective breeding
Indicate whether the statement is true or false