You have a planar bilayer with equal amounts of saturated and unsaturated phospholipids. After testing the permeability of this membrane to glucose, you increase the proportion of unsaturated phospholipids in the bilayer
What will happen to the membrane's permeability to glucose?
A) Permeability to glucose will increase.
B) Permeability to glucose will decrease.
C) Permeability to glucose will stay the same.
D) You cannot predict the outcome. You simply have to make the measurement.
Answer: A
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In human embryonic development, which of the following pairs of hormones are released by the developing testes and result in development of the male reproductive tract and inhibition of the female reproductive tract?
A) testosterone and estrogen B) estrogen and progesterone C) testosterone and Müllerian inhibitory substance D) estradiol and estrogen E) testosterone and estradiol
Which of the following gives the correct rank order for relative energetic cost (most to least) of the primary nitrogenous wastes used by different animals?
A. ammonia ? urea ? uric acid B. uric acid ? urea ? ammonia C. urea ? uric acid ? ammonia D. ammonia ? uric acid ? urea E. urea ? ammonia ? uric acid
What is rubisco?
a. The least abundant protein on earth b. A molecule that is combined to make the six-carbon sugars glucose and fructose in the Calvin cycle c. An intermediate form of glucose produced during photosynthesis d. An enzyme involved in the Calvin cycle e. An accessory chemical that enables plants to build food molecules
The set of analytical and mathematical tools designed to help researchers gain understanding from the data they gather is called:
A) geometry. B) biology. C) genetics. D) science. E) statistics.