Procedures such as grinding, mincing, vortexing, and preparing smears:
a. are hazardous and should be performed while wearing gloves and gown protec-tion.
b. create aerosol droplets and should be per-formed only in an approved biosafety cabinet.
c. should be avoided with specimens known to contain infectious agents.
d. produce a spill hazard and should be per-formed over an absorptive mat.
B
All of these procedures create hazards by dispersing infectious material into the air and should be confined to protective equipment such as a safety cabinet.
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Which is a risk that must be assumed when we genetically engineer a living individual? a. On which chromosome will the virus integrate the injected gene
b. The inserted gene may disrupt the normal genetics of the cell. c. All are risks associated with gene therapy. d. Development of an allergic reaction to the viral vector. e. Cancer may be the result of the inserted gene.
The amount of accumulated organic matter found in an area at a given time is the ________ crop biomass
Fill in the blank(s) with correct word
All species are either ____________ or ______________.
a. extant; extinct b. vertebrates; arthropods c. endangered; threatened d. higher; lower e. in a phylum; not in a phylum
Plant growth regulators _____
A) only act by altering gene expression B) often have a multiplicity of effects C) function independently of other hormones D) affect the division and elongation, but not the differentiation, of cells