What is one advantage of using transgenic plant cells to produce human proteins for hormone replacement therapy?
a. Transgenic plants produce lower protein yields than transgenic animals.
b. Transgenic plants produce higher protein yields than transgenic animals.
c. Plant cells are less expensive to grow than other cell types.
d. Transgenic animals cannot produce human proteins.
e. HIV is spread through proteins harvested from transgenic animals.
c
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Which of the following is most likely to lead to resource partitioning?
A. mutualism B. predation C. parasitism D. niche overlap E. commensalism
Ecosystem ecology is primarily concerned with
A. ecosystem stability. B. species interactions in various types of ecosystems. C. the synthesis of nutrients. D. patterns of species diversity within ecosystems. E. movement of energy and materials through organisms and their communities.
Spring has sprung and so has your garden. Cleaning out the beds in preparation can be tiring but rewarding. The day after doing so, you realize you received an extra reward this year because your skin is covered in itchy, red, swollen blisters. Poison ivy is characterized as which of the following?
a. immediate hypersensitivity b. immunodeficiency c. delayed hypersensitivity d. autoimmune reaction
Why does vascular cambium produce annual rings in xylem but not in phloem? What will be an ideal response?