In the accompanying diagram, ____ is labeled "D"
a. the appendix
b. the cecum
c. a polyp
d. a portion of the small intestine
e. the colon
ANSWER: d
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Answer the following statements true (T) or false (F)
1. Sweat has a higher salt concentration than the blood does in humans. 2. Animals that do not control internal water concentration also typically do not control the concentrations of ions like sodium and potassium. 3. An animal that exhibits broad tolerance for changes in the salinity of its environment is said to be "euryhaline." 4. The materials in urine are ONLY those that are filtered from the blood or hemolymph and not reabsorbed by the body following filtration.
What is the difference between the blood types, A, B, and O?
A. A and B individuals have carbohydrate trees on the surface of red blood cells. O individuals do not have carbohydrate trees. B. For each blood type, A, B, and O, there is a different sugar attachment enzyme produced. C. A and B individuals have different modifications made to their carbohydrate tree. O individuals have no modifications made to their carbohydrate tree. D. The glycosyl transferase gene has a different mutation in A individuals than in B individuals. O individuals have no mutations in the glycosyl transferase gene. E. Two of these answers are correct. The glycosyl transferase gene mutations in A and B individuals prevent the removal of carbohydrate trees from the cell surface. O individuals have no mutations and therefore have no carbohydrate trees on the red blood cell surface.
Which statement about chlorofluorocarbons is FALSE?
A. They can destroy ozone. B. They are odorless. C. They are a greenhouse gas. D. They break down very slowly. E. Their action is allowing more UV radiation through the atmosphere.
Which of the following diseases is NOT correctly matched to its reservoir?
A) tuberculosis — cattle B) histoplasmosis — soil C) psittacosis — parakeets D) coccidioidomycosis — air E) pneumocystis — humans