Which of the following infectious disease transmission modes is not correctly paired with an example?
A) windborne: cholera
B) breast milk: HIV
C) flea bite: Plague
D) touching: cat-scratch fever
E) swimming: swimmer's ear
Answer: A
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A lichen represents a symbiotic relationship between which of the following pairs?
A) a fungus and an ameba B) a yeast and an ameba C) an alga and a cyanobacterium D) an alga and a fungus
Carotenoids are important to many plants because these pigments are able to
A. capture UV radiation that is harmful to the DNA in the nucleus of plant cells. B. absorb wavelengths of light that neither chlorophyll a nor b can absorb. C. store electrons for use during the "dark" reaction of photosynthesis. D. absorb water so that hydrolysis can be carried out in the chloroplasts. E. remove carbon dioxide from the air.
How does mitotic prophase differ from prophase I of meiosis?
a. Chromatin supercoils only in mitotic prophase. b. The nuclear envelope disappears only in prophase I of meiosis. c. Synapsis occurs in mitotic prophase and but not in meiotic prophase I. d. The chromatids separate in mitotic prophase, not in prophase I of meiosis. e. Crossing over is characteristic of prophase I of meiosis but not of mitotic prophase.
Familial hypercholesterolemia is a(n) _______ disorder.
Fill in the blank(s) with the appropriate word(s).