The primary function of the hemagglutinin protein is to:
A. Attach to sialic acid residues on the cell surface and promote engulfment
B. Transcribe the viral RNA
C. Permit the release of viral progeny from the cell
D. Prevent attachment to red blood cells
Ans: A. Attach to sialic acid residues on the cell surface and promote engulfment
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Transcription of various genes under particular environmental conditions can be studied by
A) CARD-FISH. B) using a reporter gene that encodes for green fluorescent protein (GFP). C) T-RFLP. D) using a reporter gene that encodes for green fluorescent protein (GFP) or CARD-FISH.
Rhizomes, tubers, corms, and stolons are examples of modified ____
a. leaves b. bulbs c. roots d. flowers e. stems
A collection of similarly specialized cells and any extracellular material they secrete and maintain describes
a. an organ. b. a system. c. a tissue. d. organelles.
The first stage in the development of the nervous system is
a. gastrulation. b. blastulation. c. neurulation. d. morulation. e. festination.