Normal flora in the duodenum are

A) similar to the microflora in the stomach.
B) dominated by aerobic organisms.
C) tolerant to alkaline environments.
D) tolerant to high salinity.


Answer: A

Biology & Microbiology

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Based on the following classification scheme, which two organisms are most closely phylogenetically related? Why?

What will be an ideal response?

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Disruption of neural signaling can produce profound changes in mood and behavior. Cocaine exerts its effects by

A. blocking norepinephrine and dopamine reuptake from synapses. B. blocking serotonin reuptake from synapses. C. preventing neurotransmitter vesicle fusion with presynaptic neuron membranes. D. blocking the enzyme acetylcholinesterase. E. binding to the GABA receptor to enhance inhibitory neurotransmission.

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The range of the sugar maple could decrease in response to warming due to climate change.

Answer the following statement true (T) or false (F)

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