Exotic, or introduced, species can permanently disrupt native communities when they ________
a. destroy crops or natural vegetation used by other species
b. all of the choices
c. prey on community members and depress their numbers
d. outcompete native species for access to space, light, or nutrients
b
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Describe the process of ‘reading' a microarray in order to compare the expression of genes in two different tissues--one that is normal and one that represents a disease such as cancer
What will be an ideal response?
Methylene blue
a. is used to kill cells that are moving too quickly to observe. b. detoxifies cells so they are safe to handle. c. is used as food for Physarum cells. d. is a biological stain used to increase contrast of transparent cells.
Small single strand DNA molecules with a fluorescent molecule attached that are used to identify a clone containing a specific gene fragment is called a
A. primer. B. probe. C. plasmid. D. promoter. E. peptide.
The advantages of DNA vaccines include
a. no possibility of infection. b. activation of T and B cells. c. targeted immune response. d. all of the above.