Chapter 45 - Bio 1201 QUESTIONS AND ANSWERS
E. always proteins
B. chemical signals between cells, transported in blood or hemolymph
The hormone epinephrine causes opposite effects in two populations of target cells because _____.
A. epinephrine can only reach target cells in adipose tiss...
E. always proteins
B. chemical signals between cells, transported in blood or hemolymph
The hormone epinephrine causes opposite effects in two populations of target
cells because _____.
A. epinephrine can only reach target cells in adipose tissue, as it is fat-soluble
B. the chemical form of epinephrine released by neurons is different from the
epinephrine released by endocrine cells
C. epinephrine activates biochemical pathways in one set of target cells but
works only by changing gene expression in the other set of target cells
D. epinephrine crosses the membrane on one set of target cells but binds to
membrane-bound receptors in the other set of target cells
E. each set of target cells has different receptor-transduction mechanisms
E. each set of target cells has different receptor-transduction mechanisms
Oxytocin secretion and milk release from the mammary glands of lactating female
mammals are initiated by _____.
A. the secretion of the pancreatic hormone called glucagon
B. a hormone released by the anterior pituitary gland in response to the smell of
the baby
C. estrogens from the ovaries
,D. the physical sensation of the baby sucking at the nipple
E. the level of fullness in the breast, based on the rate of milk synthesis
D. the physical sensation of the baby sucking at the nipple
In their mechanism of action, a difference between lipid-soluble and water-soluble
hormones is that _____.
A. lipid-soluble hormones activate a "second messenger" pathway
B. water-soluble hormones cross the plasma membrane more readily than do
lipid-soluble hormones
C. water-soluble hormones bind reversibly to DNA
D. lipid-soluble hormones bind to an intracellular receptor and this hormone-
receptor complex binds to DNA
E. the water-soluble hormones travel only in the blood, and the lipid-soluble
hormones travel only in the lymphatic fluid
D. lipid-soluble hormones bind to an intracellular receptor and this hormone-receptor
complex binds to DNA
The counter-regulatory functions of the pancreas refer to the fact that it _____.
A. releases one hormone that increases urine production and another hormone
that reduces urine production
B. releases acetylcholine when a person is calm, and epinephrine when a person
is frightened or exercising
C. releases one hormone that increases body temperature (fever) and another
that decreases body temperature
, D. releases one hormone that reduces glucose levels in the blood and another
that increases them
E. releases one hormone that increases heart rate and another that decreases
heart rate
D. releases one hormone that reduces glucose levels in the blood and another that
increases them
This disorder typically arises prior to puberty and is generally treated by
injections of the hormone missing from the affected individual's bloodstream.
A. hyperthyroidism
B. Type II diabetes mellitus
C. Type I diabetes mellitus
D. hypothyroidism
E. cachexia
C. Type I diabetes mellitus
The anterior and posterior lobes of the pituitary differ in that _____.
A. the posterior pituitary gland synthesizes oxytocin and antidiuretic hormone
whereas the anterior lobe receives all of its hormone products in the blood
B. the anterior lobe of the pituitary is nervous tissue that connects directly to the
brain whereas the posterior pituitary is derived from non-neural tissues
C. the posterior lobe of the pituitary operates independently of the brain whereas
the anterior lobe is directly dependent on brain activity
D. the anterior lobe of the pituitary receives neuronal impulses from brain cells
whereas the posterior lobe receives blood-borne hormones
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