The primary function of the Neuraminidase in the influenza virus is to:
A. Permit the release of viral progeny from the cell
B. Attach to sialic acid residues on the cell surface and promote engulfment
C. Prevent attachment of the virus to red blood cells
D. Transcribe the viral RNA
Ans: A. Permit the release of viral progeny from the cell
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What site on the ribosome is primarily responsible for holding the growing polypeptide?
A. A B. E C. P
Which of the following is NOT true concerning
botulism? a. It is a type of food poisoning. b. The toxin is odorless and tasteless. c. The pathogen is a virus. d. The toxin enters motor neurons. e. Muscles become paralyzed.
You are explaining the biological basis of depression to a friend. The most accurate description is:
A. Depression stems from an irregularity in the production, release, reception, breakdown, or reuptake of neurotransmitters. B. Depression can be traced to myelin loss, which causes remarkable nerve dysfunction due to the slowing or blocking of nerve conduction. C. Depression is a cognitive disorder that involves a clinically significant deficit in cognition or memory that represents a marked change from a previous level of functioning. D. Depression is characterized by one or more symptoms of a physical dysfunction for which there is no identifiable organic cause.
Extraembryonic membranes are NOT found in the development of
Select one: a. amphibians. b. reptiles. c. birds. d. mammals. e. chordates.