To develop an effective simulation model for an ecosystem, a researcher must do all of the following
EXCEPT
a. describe food webs.
b. develop relevant equations.
c. estimate productivity of all populations.
d. identify major species.
e. manipulate species richness.
E
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A given medium can be either selective or differential but not both.
Answer the following statement true (T) or false (F)
Monoclonal antibodies:a
have been linked as causative agents in some types of cancer. b. are only produced by harvesting B cells from mice exposed to particular antigens. c. include hCG, a component of commonly used home pregnancy tests. d. are very specific for their target antigen, but are somewhat difficult to purify. e. are produced by millions of genes.
Nerve impulses cannot reverse and travel up the axon toward the cell body due to _____
the refractory period the resting potential the action potential summation
Some fungi and higher plants form a beneficial association known as
A. galls. B. haustoria. C. mycorrhizae. D. lichens. E. vectors.