Allergic reactions to penicillins are considered a(n) ________ hypersensitivity.
A. Both T-cell-mediated and antibody-mediated are correct.
B. immune complex-mediated
C. immediate
D. T-cell-mediated
E. antibody-mediated
Answer: C
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Which of the following cannot be addressed directly using biotechnology?
a. determining DNA profiles from a crime scene b. inserting a gene into a person to replace a defective gene c. examining the moral implications of inserting pesticide genes into crop plants d. using bacteria to produce products such as insulin and human growth hormone
Depolarization occurs due to the diffusion of K+ across a neuron plasma membrane
Indicate whether the statement is true or false.
The genome is all the individual's
A. DNA. B. mRNA. C. tRNA. D. All of these answers are true.
Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve?
A) methane B) oxygen C) carbon dioxide D) nitrogen E) fructose