Bio 202 Exam #1 Multiple Choice Questions & Answers 100% Accurate
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Course
Bio 202
Institution
Bio 202
The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on ________. - ANSWER-the presence of the appropriate receptors on the cells of the target tissue or organ
Endocrine glands cannot be stimulated by - ANSWER-renal stimuli
Which of the following is N...
Bio 202 Exam #1 Multiple Choice Questions & Answers 100% Accurate
The difference in nervous system & endocrine system signaling is that - ANSWER-the endocrine system transmits signals more slowly which last much longer at the target tissue.
Virtually all amino acid-based hormones exert their signaling effects through intracellular
________. - ANSWER-second messengers
The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on ________. - ANSWER-the presence of the appropriate receptors on the cells of the target tissue or organ
Endocrine glands cannot be stimulated by - ANSWER-renal stimuli
Which of the following is NOT a cardinal sign of diabetes mellitus? - ANSWER-
polycythemia
During labor, oxytocin release _________. - ANSWER-is an example of a positive feedback control mechanism
A lipid-soluble (hydrophobic) hormone - ANSWER-can pass through the cell membrane to directly effect target cells.
Which of the following are examples of common second messengers in hormonal signaling? - ANSWER-PIP2 and cAMP
Chemical substances secreted by cells into the extracellular fluids that travel through the blood and regulate the metabolic function of other cells in the body are called _________. - ANSWER-hormones
Hydrophobic steroid based hormones are generated from - ANSWER-cholesterol.
Which of the following is NOT a major function of the endocrine system? - ANSWER-
regulation of the central nervous system
During a flight or fight response, which gland can cause the sympathetic nervous system to override insulin to allow blood glucose levels to increase? - ANSWER-
hypothalamus How do lipid-soluble (hydrophobic) hormones move through circulation? - ANSWER-
binding to plasma "carrier" proteins
Which gland contains neural tissue that secretes neurohormones? - ANSWER-posterior
pituitary gland
What is a half-life? - ANSWER-how long it takes for the amount of hormone in circulation to decrease by half
Hormones are removed from circulation by all of the following EXCEPT - ANSWER-
stomach.
Which of the following is not a hormone secreted by the pituitary gland: - ANSWER-
glucagon
When an individual has too much _____ during childhood, they develop gigantism. - ANSWER-growth hormone (GH)
A trophic hormone (tropin) _____. - ANSWER-triggers the release of a hormone
Which hormone requires iodine to be synthesized? - ANSWER-thyroid hormone (TH)
Which type of hormones stimulate the release of estrogen, progesterone, & testosterone? - ANSWER-gonadotropins
Which gland produces epinephrine and norepinephrine in response to short-term stresses? - ANSWER-adrenal medulla
One of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. Which of the following describes this mechanism? - ANSWER-humoral stimulation
The effect of a hormone on a target cell may be decreased by the presence of _________. - ANSWER-antagonistic hormones
During an afternoon class, Lisa starts to feel hungry and worries that her blood sugar level may be dropping. Which hormone is helping to prevent a drop in blood sugar level? - ANSWER-glucagon
Which of the following are not part of the formed elements of blood? - ANSWER-plasma
What is the name for the fluid matrix of blood tissue? - ANSWER-plasma
If blood changes from a dark brownish color to a bright scarlet-red color, what is true of its oxygen content? - ANSWER-it has just increased its oxygen content
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