A 30× objective and a 20× ocular produce a total magnification of ________.

A. 50×
B. 230×
C. 320×
D. 600×


Answer: D

Biology & Microbiology

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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

Biology & Microbiology

Which type of nutrient can pass across epithelial cells without any expenditure of ATP?

A. iron B. calcium C. protein D. fat E. magnesium

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology