Grafting is used to grow all varieties of edible apples. What does grafting involve?
a. repairing a damaged stem of a plant to continue its growth
b. inducing polyploidy in plants
c. growing new roots and shoots from extensions of a parent plant
d. inducing a cutting from one plant to fuse with the tissues of another plant
e. artificially inducing individual cells to divide and form an embryo
d
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Immunofluorescence
A. uses fluorescently tagged molecules. B. makes use of the specificity in binding of antibodies. C. utilizes acridine orange. D. would require a special UV microscope. E. uses fluorescently tagged molecules, makes use of the specificity in binding of antibodies, AND would require a special UV microscope.
Which of the following helps preserve foods by controlling microbial access to water?
A. Drying B. Addition of sugar C. Addition of salt D. All of the choices are correct.
Which organelle is a fluid-filled vesicle that breaks down amino acids, fatty acids and toxic substances?
a. Peroxisome b. Golgi body c. Vesicle d. Lysosome e. Endoplasmic reticulum
Which of the following contributes to the virulence of a pathogen?
A) numbers of microorganisms that gain access to a host B) evasion of host defenses C) toxin production D) numbers of microorganisms that gain access to a host and evasion of host defenses E) numbers of microorganisms that gain access to a host, evasion of host defenses, and toxin production