Which term refers to a bacterial protein that causes disease only after the cell has been disrupted?

a. endospore
b. heterocyst
c. endotoxin
d. exotoxin


Ans: c. endotoxin

Biology & Microbiology

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Glycolysis is a metabolic process that is done by all cells. However, not all cells make use of another metabolic process called the Krebs cycle. What does this tell you about the evolution of these processes?

A. As a metabolic process, glycolysis likely evolved prior to the Krebs cycle B. As a metabolic process, the Krebs cycle likely evolved prior to glycolysis C. Both the Krebs cycle and glycolysis likely evolved at the same time

Biology & Microbiology

In addition to investigations with bacteria that led to him being considered the Father of Microbiology, Pasteur also

A. found that some molecules can exist as stereoisomers. B. created aspartame. C. separated organic acids using a microscope. D. discovered polarized light. E. found that some molecules can exist as stereoisomers AND separated organic acids using a microscope.

Biology & Microbiology

Which chemical builds up in Tay-Sachs disease?

a. albumin b. glycogen c. amyloid d. fibrillin e. sphingolipids

Biology & Microbiology

Which of the following organs of cephalopods resemble those of the vertebrates?

A. nephridia B. digestive tissues C. foot D. arms E. eyes

Biology & Microbiology