A 30× objective and a 20× ocular produce a total magnification of ________.
A. 50×
B. 230×
C. 320×
D. 600×
Answer: D
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As herbivores adapt to a plant's defenses, the plant will always allocate more and more resources to those defenses to deter the herbivore
A. true B. false
Which type of nutrient can pass across epithelial cells without any expenditure of ATP?
A. iron B. calcium C. protein D. fat E. magnesium
1 mole = 1000 millimoles (mmol); 1millimole = 1000 micromoles (µmol). If a solution contains 38231 µmol, what is that amount in mmol?
A. 382.31 mmol. B. 38.231 mmol. C. 3.8231 mmol. D. 3823.1 mmol.
Perhaps the greatest asset possessed by early
hominids was a. their use of many different kinds of foods. b. the ability to walk without using the forelimbs. c. a heavy, muscular build. d. the ability to reason and learn. e. less hair on the body.