Researchers can deliver genes into plants by using
a. the bacterium Agrobacterium tumefaciens.
b. microscopic particles coated with DNA.
c. electric shocks.
d. chemicals.
e. all of these.
Answer: e
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The term “respiration” in animals refers to the ____
a. movement of oxygen into an animal only b. movement of carbon dioxide out of an animal only c. movement of oxygen into an animal and the movement of carbon dioxide out of the animal d. binding of oxygen to hemoglobin molecules in the blood e. diffusion of oxygen across a cell membrane
Each of the following is used in the process of DNA sequencing EXCEPT which one?
A) modified nucleotides B) nucleotides C) gel electrophoresis D) RNA polymerase E) DNA polymerase
Which of the following versions of the polio vaccine is preferred in the United States?
A) oral polio vaccine which is made up of an attenuated viral strain B) antibiotic treatment to clear the infection C) transgenic DNA vaccine, which is made by inserting DNA for polio capsid proteins into the genome of a nonvirulent virus D) inactivated polio vaccine which is injected into muscle and requires several boosters E) Currently no vaccine is available, and patient isolation is the preferred method of control.
What is the unifying principle of the biological sciences?
A. technology B. evolution C. biochemistry D. taxonomy E. anatomy