The figure illustrates
a. a pyramid of energy.
b. a pyramid of biomass.
c. a grazing food web.
d. a detrital food web.
e. the recycling of energy in an ecosystem
C
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In a typical PCR, primers are used to cleave specific regions of the DNA template
Indicate whether the statement is true or false
Which of the following types of reproductive barriers separates a pair of species that could interbreed but for the fact that one mates at dusk and the other at dawn?
A) temporal isolation B) habitat isolation C) behavioral isolation D) mechanical isolation
The stimulation of a motor neuron ultimately results in the release of a neurotransmitter at the synapse between the neuron and a muscle cell. What type of neurotransmitter is used at these neuromuscular junctions?
(a) acetylcholine (b) glutamate (c) GABA (d) glycine
Which of the following does not pertain to endotoxins?
A. are specific bacterial cell wall lipids B. can stimulate fever in the human body C. can cause septic shock in the human body D. involved in typhoid fever and some meningitis cases E. found in acid fast bacterial cell walls