How are fungal viruses transmitted?
A) by insect vectors
B) as a result of abrasion
C) as a result of fusion of cells or hyphae
D) in the air like spores
E) by contact
C
Bloom's Taxonomy: Comprehension
Section: Characteristics of Viruses
Learning Outcome: 13.4
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A large portion (45%) of the human genome is composed of
A. introns. B. exons. C. templates. D. transposons. E. pseudogenes.
To maximize the number of thymine dimer mutations following UV exposure, should you keep human cells in tissue culture in the dark, in the light, or does it matter at all?
A. The dark-light will activate the photorepair systems that can break thymine dimers induced by UV light. B. The light-it's important to keep on producing the thymine dimers by keeping the plate exposed to light as much as possible. C. It's best to alternate light and dark every hour to increase the chances that thymine dimers will form in the human cells, but still keep the photorepair systems from correcting them as they are formed. D. It doesn't matter-human cells don't possess the enzymes needed for photorepair of thymine dimers.
Respond to statements 121–125 with reference to the five
components of the gastrointestinal tract listed below. a. stomach b. gallbladder c. small intestine d. appendix e. large intestine D 121. It has no function in human digestion, but it does in other animals. D 122. This organ absorbs about 95 percent of the water that enters the human body, either as fluids or as part of food being eaten. M 123. Enzymatic digestion of proteins occurs primarily in this organ. E 124. Bile salts, bile pigments, cholesterol, and lecithin are stored by this organ. E 125. The digestion of cellulose occurs in this part of the digestive system of the pronghorn antelope.
In the signal transduction pathway involving cAMP, once cAMP is formed, it then activates:a
protein kinase A. b. adenylyl cyclase. c. G protein. d. protein kinase C. e. IP3.