Which type of microscopy transforms the subtle variations in cell density into differences in light intensity, allowing for increased internal detail without staining?

A. Confocal
B. Bright-field
C. Phase-contrast
D. Fluorescence
E. Electron


Answer: C

Biology & Microbiology

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The major macromolecules of the ECM are polysaccharides and

A. lipids. B. fat. C. proteins. D. nucleotides. E. amino acids.

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This is a water-soluble hormone derived from the nervous system that regulates blood volume and blood pressure.

A. antidiuretic hormone B. aldosterone C. cortisol D. oxytocin E. adrenocorticotropic hormone

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What radiolabeled substance did Hershey and Chase use to label the protein component of the bacteriophage in their study to determine whether protein or DNA was necessary for phage production?

A) nitrogen B) carbon C) sulfur D) phosphorus E) iodine

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Classical zonation patterns in the intertidal where space is limited result from:

1.high recruitment 2.low recruitment

Biology & Microbiology