You want to determine the function of a vertebrate gene by creating a mutant strain. What model organism would be most suitable?
A. C. elegans
B. Arabidopsis
C. sea urchin
D. Brachydanio rerio
E. Drosophila melanogaster
E. Drosophila melanogaster
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Which of the following is not a method of heat sterilization?
A. Autoclaving B. Heating in a dry air oven C. Incineration D. Pasteurization
Bacteroids are
a. specialized nitrifying bacteria. b. small buds from ammonifying bacteria. c. specialized bacteria that help some plant roots absorb phosphorus. d. enlarged and immobilized nitrogen-fixing bacteria. e. interactions between plant root hairs and bacteria.
The _____ shrinks in size after puberty
a. pancreas c. pineal gland b. pituitary d. thymus
Which of the following groups contains organisms that produce free-living larvae?
a. cnidarians b. echinoderms c. arthropods d. cnidarians and echinoderms e. cnidarians, echinoderms, and arthropods