All cells contain
a. cytoplasm.
b. a cell wall, nucleus, and cytoplasm.
c. DNA, plasma membrane, and cytoplasm.
d. mitochondria, plasma membrane, and cytoplasm.
b
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The toxin produced by Staphylococcus aureus is heat-stable
Indicate whether this statement is TRUE or FALSE.
Prokaryotes, such as bacterial cells, differ from eukaryotes in that eukaryotes
A. have a simpler structure relative to prokaryotes. B. possess membrane-bound organelles. C. are relatively small compared to prokaryotes. D. lack a membrane-bound nucleus. E. store most of their DNA within the cytoplasm.
When viable cell concentrations are too high to count on an agar medium, it is most common to use larger sized plates to increase the surface area for counting the colonies
Indicate whether the statement is true or false.
What causes a myosin II molecule to be able to form a bipolar fiber?
a. Myosin I b. Myosin-like chain kinase c. Calcium binding to calmodulin d. Two of the above e. Three of the above