BIOL 1141 Chapter Notes - Chapter 36,40: Uric Acid, Protein Kinase, Blood Proteins

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In the urea cycle, carbon dioxide is combines with two ammonia molecules to form uric acid, which is moderatel(cid:455) to(cid:454)ic . Endocrine system: organ system involved in the coordination of the body activities, uses hormones as chemical signals secreted into the bloodstream. Hormone: chemical messenger produced in one part of the body that controls the activity of other parts. Influence homeostasis including metabolism, growth, reproduction, osmo regulation, and digestion. Hormone insulin is a key regulator of metabolism. Means of communication between cells, body parts, and individuals. Only target cells can respond to a specific hormone these carry a receptor protein for that hormone. Exocrine gland: gland that secretes its product to an epithelial surface directly or through ducts. Endocrine gland: ductless organ that secretes hormones into the bloodstream. Chemical signal: molecule that brings about a change in a cell, a tissue, an organ, or an individual when it binds to a specific receptor.

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