Which of the following is the least effective method of contraception?
a. progestin
b. tubal ligation
c. IUDs
d. rhythm method
e. spermicidal foam
e
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Which of the following might be expected to increase as a result of predation?
A. competition among prey species B. the availability of resources and niches C. prey population densities D. niche divergence E. extinction of prey species due to competitive exclusion
All of the following are moved by molecular motors except
A) secretory vesicles. B) cytoskeletal filaments. C) the Golgi complex. D) glucose. E) chloroplasts.
There is evidence connecting excessive amounts of glutamate, an amino acid, with mental health conditions such as schizophrenia. If a patient were put on a diet severely limiting carbohydrates and glutamate, would it disrupt the body’s ability to perform cellular metabolism?
a. Yes. Glutamate is intrinsic to energy production during low carbohydrate conditions. b. No. Glutamate is not a contributing factor in nutrition and would not be missed for energy production. c. No. The body has many other amino acids that can be fed into the citric acid cycle to continue to make ATP. d. Yes. Glutamate is an essential amino acid required by the body that must be acquired from nutrition.
Lactose intolerance
A) is common in people of all ages, from infancy to adulthood. B) is most common in people of European descent. C) can currently be treated by gene therapy to treat the underlying cause. D) does not affect the consumption of beverages made from soy or rice.