What is the purpose of safranin in the Gram stain technique?
a. It is a counterstain, which will make gram-positive bacteria colorless.
b. It is a decolorizing agent.
c. It is the primary stain used to impart a pink color to all cells in a heat-fixed smear.
d. It is a counterstain, which turns gram-negative bacteria pink.
Answer: d. It is a counterstain, which turns gram-negative bacteria pink.
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Where do cold ocean currents generally occur?
a. along the west coast of continents b. near the poles c. near the equator d. along the east coast of continents e. in the open ocean
A mouse and a lizard of identical weight would be expected to have the same total metabolic rate.
Answer the following statement true (T) or false (F)
Any substance that forms between the beginning and end of a metabolic pathway is a(n)
a. reactant. b. end product. c. substrate. d. intermediate. e. chemical.
The proposition that the mitochondria in our cells descended from engulfed bacteria is called the ________ theory
Fill in the blank(s) with correct word