What is the fundamental purpose of staining in light microscopy?

a. To kill the specimen
b. To make the specimen appear larger in the microscope
c. To see the specimen without the aid of a microscope
d. To increase the contrast and visibility of the specimen


Answer: d. To increase the contrast and visibility of the specimen

Biology & Microbiology

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Old pine stumps are dug up, split into pieces and sold as "fatwood". Fatwood is used as a fire starter. Why is this done?  

A.  The wood in the stumps is porous and dry, thus it burns easily. B.  The high concentration of volatile organic compounds makes the wood flammable. C.  Pine bark does not absorb water and is flammable. Clarify Question What is the key concept addressed by the question?   Gather Content What do you already know about pine? What other information is related to the question?   Choose Answer Given what you now know, what information is most likely to produce the correct answer?   Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

The ____ is the developmental origin of the body cavity between the gut and muscles of the body wall

for most protostomes.

a. schizocoelom b. mesoglea c. archenteron d. enterocoelom e. blastopore

Biology & Microbiology

Photosystem II Electrons excited in photosystem II help the chloroplast produce

a) water. b) NADPH. c) glucose. d) NADH. e) ATP.

Biology & Microbiology

The identification of which structures, produced by the pathogen, in the stool samples aided in the patients diagnosis?

A. inclusions B. cyst C. endospores D. nuclei

Biology & Microbiology