A molecule consisting of three fatty acid tails attached to glycerol is a(n)
a. carbohydrate.
b. nucleic acid.
c. triglyceride.
d. amino acid.
e. oil.
C
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Which of the following statements about pollination and fertilization is CORRECT?
A) Pollination is identical to fertilization. B) Pollination is not the same as fertilization, but pollination guarantees fertilization will occur. C) Pollination and fertilization are unrelated. D) Pollination is not the same as fertilization, and pollination does not guarantee fertilization will occur.
The ________ is the selective barrier of a root that determines which substances pass between the cortex and vascular tissue
A) epidermis B) endodermis C) cuticle D) xylem
Researchers have proposed that the herpesvirus responsible for the childhood illness roseola may cause a type of T cell leukemia. Ninety percent of the population has been infected by the virus by two years of age, but the T cell leukemia is relatively rare. The virus can be cultured in the laboratory in tissue culture, but not in mature organisms. Discuss the obstacles to applying Koch's
postulates to the etiology of this disease. What will be an ideal response?
What is epigenetic inheritance?
What will be an ideal response?