A student views a specimen with a light microscope. The ocular lens used is a 4x and the objective lens is 40x. What is the total magnification of the specimen viewed?

A) 36x
B) 40x
C) 44x
D) 160x


Ans: D) 160x

Biology & Microbiology

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Imagine that several thousand years ago, a group of bats and a group of frogs colonized an island at the same time. What can you expect of their current descendants?

A. There will be more frog species compared to bat species. B. There will be more bat species compared to frog species. C. The number of bat and frog species will be equal. D. All frog species will have become extinct on the island. E. All bat species will have become extinct on the island.

Biology & Microbiology

Identify the reaction shown in this diagram:



a. dehydration synthesis
b. condensation
c. hydrolysis
d. catalyst

Biology & Microbiology

Which method of transport is illustrated here?



a. potocytosis
b. pinocytosis
c. receptor-mediated endocytosis
d. phagocytosis

Biology & Microbiology

Which type of cell has phagocytic capabilities in the central nervous system?

A. Astrocytes B. Schwann cells C. Neurons D. Microglial cells E. Macrophages

Biology & Microbiology