The structural framework in a cell is the
a. extracellular matrix.
b. endoplasmic reticulum (ER).
c. cytoskeleton.
d. plasma membrane.
e. endomembrane system
Answer: c. cytoskeleton.
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Staphylococci can be divided into pathogenic and relatively nonpathogenic strains based on whether or not they synthesize ________.
A. coagulase B. a capsule C. leukocidins D. catalase
The RNA molecule is made up of how many
strands? a. 1 b. 2 c. 3 d. 6 e. 12
Methanogens may contribute to the greenhouse effect and global warming due to methane production.
Answer the following statement true (T) or false (F)
Internal pH changes of a bacterium can cause drastic problems for the cell. Which of the following situations do not occur when the internal pH of a bacteria changes?
A) Lethal denaturing of enzymes B) Limited production of ATP C) Altered membrane potential of the cell D) Endospores enter the vegetative cycle