Compare and Contrast the Patterns of Life in the Paleozoic

question 67

Essay

Compare and contrast the patterns of life in the Paleozoic Era to the Mesozoic Era. What are the major differences between these two eras? Are there similarities or similar trends?

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Definitions:

Reception

Process of detecting a stimulus.

Neurotransmitters

Chemical substances that transmit signals across the synaptic gap from one neuron to another in the nervous system.

Prostaglandins

A group of local regulators derived from fatty acids; synthesized by most cells of the body and produce a wide variety of effects; sometimes called local hormones.

Steroids

A class of lipids characterized by a carbon skeleton with four fused rings; they play roles in structure, as hormones, and more.