The major obstacle to the use of xenotransplants is overcome by ________________
A. series of injections that depress the immune systems of recipients
B. changing genetic markers in humans to make them more receptive
C. changing genetic markers in donor animals to make them more compatible with human
recipients
D. introducing a complement of immune system genes to both the donor animal and recipient
human
E. doing more than one of these
C
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Which of the following is an example of a transposable element in humans?
A. Alu B. P elements C. Mu D. Ty
Most yeast cells reproduce via
a. budding, which is an asexual process utilizing mitosis. b. budding, which is a sexual process using meiosis. c. mating of compatible hyphae, which is an asexual process utilizing mitosis. d. mating of compatible hyphae, which is a sexual process utilizing meiosis
The correct sequence going from smallest to largest is
A. molecule - atom - organelle - tissue - cell. B. tissue - cell - organelle - molecule - atom. C. atom - molecule - organelle - cell - tissue. D. cell - molecule - tissue - organelle - atom. E. cell - tissue - organelle - molecule - atom.
Which one of the following is an irregular, gram-positive rod?
A) Bordetella pertussis B) Corynebacterium diphtheriae C) Burkholderia pseudomallei D) Streptococcus pyogenes E) Pneumocystis jirovecii