What is the main component in tissue growth and repair?
a. unsaturated fats
b. lipids
c. protein
d. carbohydrates
Answer: c. protein
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A pine tree is called a sporophyte because it
a. develops from a germinated spore. b. produces spores by meiosis. c. is haploid. d. undergoes fertilization. e. reproduces by both sexual and asexual means.
The unit structure of chromatin is the ____________________, which is made up of
____________________ types of ____________________ proteins complexed with DNA. Fill in the blank(s) with the appropriate word(s).
Tissue transplantation has been made possible by our ability to
A) competitively inhibit HLA molecules. B) alter the expression of the HLA molecules. C) inhibit the binding of helper T cells to the HLA. D) closely match HLA molecules between individuals. E) inhibit interleukin-5.
Why has it been so hard to come up with an accurate measure of Earth's carrying capacity for humans?
What will be an ideal response?