The present rate of species loss ________
A) suggests that about 25% of all plant and animal species may be extinct by the end of the century
B) is about the same as it has been during the last 100,000 years
C) is as much as 100 times higher than at any time in the last 100,000 years
D) is slower than in recent years because of conservation efforts
C
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Which of the following vitamins is not stored in fat?
a. A b. K c. C d. D e. E
What feature is common to all the alveolates?
A. Autotrophy B. Lung-like sacs used for respiration C. Bioluminescence D. Complex life cycle with two hosts E. Membrane-bound sacs beneath the plasma membrane
T lymphocytes mature in the (bone marrow/lymph node/thymus).
Fill in the blank(s) with the appropriate word(s).
All of the following are lipids except:
a. cholesterol b. wax c. fat d. oil e. sugar