The barrier function of an epithelium extends the role of the plasma membrane over a larger surface area
a. true
b. false
Answer: a. true
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Responsible for the majority of DNA replication
A. DNA ligase B. DNA primase C. Topoisomerase D. DNA polymerase I E. DNA polymerase III
Which of the following best describes cnidarians?
A. They have radial body symmetry, tissues, and stinging cells. B. They are asymmetrical and have tissues and stinging cells. C. They have radial body symmetry, lack tissues, but have stinging cells. D. They have radial body symmetry and tissues but lack stinging cells.
If you were describing to a class of nursing students how the polio vaccine, which contains inactivated virus, works
A. introduce antibodies into a person. B. create immunological memory without causing disease. C. introduce synthetic drugs, like sulfa drugs, into a person. D. give a person a mild disease. E. stimulate the production of blood platelets.
Bacterial endospores are used for
A) forming biofilms. B) bacterial reproduction. C) keeping the bacteria alive under harsh conditions. D) attracting viruses. E) bioremediation.