The search for a(n) ____ treatment led to the discovery that DNA carries genetic information
a. pneumonia
b. AIDS
c. tuberculosis
d. influenza
e. SARS
a
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Only 180 living species of velvet worms, characterized by jaws, an open circulatory system, and relatively large
brains, comprise the ____ Ecdysozoan phylum.
a. Arthropoda b. Onychophora c. Nemertea d. Annelida e. Nematoda
In __________, one of the sperm cells in the pollen tube fertilizes the egg, forming a diploid zygote; the other fuses
with the endosperm mother cell, forming a triploid cell. Fill in the blank(s) with the appropriate word(s).
To determine the isoelectric point of a protein, first establish that a gel:
A) contains a denaturing detergent that can distribute uniform negative charges over the protein's surface. B) exhibits a stable pH gradient when ampholytes become distributed in an electric field. C) is washed with an antibody specific to the protein of interest. D) neutralizes all ionic groups on a protein by titrating them with strong bases. E) relates the unknown protein to a series of protein markers with known molecular weights
Which of the following are potential problems with Genetically Modified (GM) crops and food?
a) Crops carrying genes from other species might harm the environment. b) GM foods could be hazardous to human health. c) Transgenic plants might pass their genes to close relatives in nearby wild areas. d) all of the above e) none of the above