Mitochondria have an unusual characteristic for organelles that make them very useful in genetic studies. This characteristic is ________.
A. mitochondria contain their own DNA
B. mitochondria are only found in females
C. mitochondria produce a lot of ATP
D. mitochondria have an unusual membrane
Answer: A
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The ability to taste PTC and other bitter chemicals is controlled by ____
a. hormone levels that change throughout life b. the presence of fats and sugars in the food being eaten c. the amount of PTC exposure as a child d. the amount of capsaicin present in taste buds e. proteins on the surface of receptor cells
Digestion begins in the
A) small intestine. B) oral cavity. C) esophagus. D) stomach.
The maximum number of individuals a habitat can support is called its
A) reproductive potential. B) carrying capacity. C) community size. D) density-dependent factor.
Which of the following is the mechanism of action of cyclosporine?
A) It blocks the complement cascade. B) It blocks the activity of activated Th1 T cells. C) It directly blocks CTL activity. D) It interferes with activation of Th2 T cells. E) It is an anti-inflammatory interfering with leukotriene function.