In the polymerase chain reaction, what is the purpose of the initial high temperature? What is the purpose of cooling in the second step?
What will be an ideal response?
to denature the target (template) DNA; to anneal the primer to the target.
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Damage to the parenchyma cells can lead to which of the following issues?
A. a decrease in the plant's ability to defend against predators B. a decrease in the structural support for various components of the plant C. an increase in the plant's ability to run photosynthesis and storing the sugars produced from photosynthesis D. a decrease in the plant's ability to run photosynthesis or store the sugars produced from photosynthesis
The prevalence of a particular disease refers to:
A) the frequency with which the disease occurs. B) how acutely the disease negatively affects a person. C) the number of cases in a particular population over time. D) the number of deaths from the disease in a given population.
The two main sources of oxygen in the sea are photosynthesis and transfer from the atmosphere
Indicate whether the statement is true or false
Which of the following STDs is caused by a virus?
a. HPV infection b. Trichomoniasis c. Chlamydia d. Gonorrhea e. Syphilis