SOLVED

Chapter 28Â Â Communication and Control 2: The Endocrine System 1) Hormones differ from other chemical messengers such as neurotransmitters in that hormones: A) are all in the lipid chemical family. B) travel through the bloodstream. C) cross a synapse. D) always suppress rather than stimulate a response. E) are released through ducts. 2) A consequence of the way hormones, as compared to neurotransmitters, get to their target cells is that hormones: A) must be larger molecules. B) must be proteins. C) can be lipids. D) would be slower to act. E) cannot maintain homeostasis. 3) A bunch of hormone molecules travel by one cell and have no effect but quickly stimulate the next cell. What did the second cell have that the first did not? A) greater need for the hormone B) a homeostatic response C) receptors for the hormone D) dendrites E) larger size 4) Hormones made from chains of amino acids are: A) peptide hormones. B) steroid hormones. C) protein hormones. D) glycolipid hormones. E) glycoprotein hormones. 5) Hormones made from variations on the cholesterol molecule are: A) peptide hormones. B) steroid hormones. C) protein hormones. D) glycolipid hormones. E) glycoprotein hormones. 6) Peptide hormones generally work by: A) attaching to membrane receptors and triggering chemical reactions. B) passing into the cell and attaching to receptors inside. C) triggering an action potential in the cell. D) triggering an influx of potassium ions. E) stimulating endocytosis of hormones and receptors. 7) Steroid hormones generally work by: A) attaching to membrane receptors and triggering chemical reactions. B) passing into the cell and attaching to receptors inside. C) triggering an action potential in the cell. D) triggering an influx of potassium ions. E) stimulating endocytosis of hormones and receptors. 8) Which of the following is a steroid hormone? A) glucagon B) T4 from the thyroid C) adrenaline D) melatonin E) estrogen 9) Which of the following is a peptide hormone? A) melatonin B) progesterone C) adrenaline D) glucagon E) estrogen 10) Release of most hormones is controlled by: A) the cerebrum. B) positive feedback. C) negative feedback. D) internal enzyme levels. E) DNA. 1