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1.1 The study of life Read Online
Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.
Chapter 37: The Endocrine System MCQ Multiple Choices Questions Quiz Test Bank
37.1 Types of Hormones
37.2 How Hormones Work
37.3 Regulation of Body Processes
37.4 Regulation of Hormone Production
37.5 Endocrine Glands
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Question: Which mechanism of hormonal stimulation would be affected if signaling and hormone release from the hypothalamus was blocked?
Choices:
humoral and hormonal stimuli
hormonal and neural stimuli
neural and humoral stimuli
hormonal and negative stimuli
Question: Which endocrine glands are associated with the kidneys?
Choices:
thyroid glands
pituitary glands
adrenal glands
gonads
Question: What effect will a cAMP inhibitor have on a peptide hormone-mediated signaling pathway?
Choices:
It will prevent the hormone from binding its receptor.
It will prevent activation of a G-protein.
It will prevent activation of adenylate cyclase.
It will prevent activation of protein kinases.
Question: A newly discovered hormone contains four amino acids linked together. Under which chemical class would this hormone be classified?
Choices:
lipid-derived hormone
amino acid-derived hormone
peptide hormone
glycoprotein
Question: Drinking alcoholic beverages causes an increase in urine output. This most likely occurs because alcohol:
Choices:
inhibits ADH release
stimulates ADH release
inhibits TSH release
stimulates TSH release
Question: A rise in blood glucose levels triggers release of insulin from the pancreas. This mechanism of hormone production is stimulated by:
Choices:
humoral stimuli
hormonal stimuli
neural stimuli
negative stimuli
Question: Which class of hormones can diffuse through plasma membranes?
Choices:
lipid-derived hormones
amino acid-derived hormones
peptide hormones
glycoprotein hormones
Question: FSH and LH release from the anterior pituitary is stimulated by ________.
Choices:
TSH
GnRH
T3
PTH
Question: What hormone is produced by beta cells of the pancreas?
Choices:
T3
glucagon
insulin
T4
Question: When blood calcium levels are low, PTH stimulates:
Choices:
excretion of calcium from the kidneys
excretion of calcium from the intestines
osteoblasts
osteoclasts
Question: A new antagonist molecule has been discovered that binds to and blocks plasma membrane receptors. What effect will this antagonist have on testosterone, a steroid hormone?
Choices:
It will block testosterone from binding to its receptor.
It will block testosterone from activating cAMP signaling.
It will increase testosterone-mediated signaling.
It will not affect testosterone-mediated signaling.
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