BIOL 2402 LECTURE EXAM 1 (LATEST UPDATE) REAL
QUESTIONS AND VERIFIED ANSWERS |100% CORRECT |
ALREADY GRADED A
Which group of messengers is defined as acting on cells within the same
tissue? Ans✓✓✓a) Autocrines
b) Hormones
c) Paracrines
d) Eicosanoids
A major differences between neurotransmitters and hormones is that
hormones reach their destination via____ Ans✓✓✓a) Direct contact on
their target cell
b) Cerebrospinal fluid
c) Ducts
d) The blood
A major determinant of a hormone's mechanism of action is_____
Ans✓✓✓a) Whether the hormonal molecule is hydrophobic or
hydrophilic
b) Its size
c) Whether it's rapid acting or slow acting
d) If it activates gene activity or not
Receptors for steroids hormones are commonly located____ Ans✓✓✓a)
Inside the target cell
, b) On the plasma membrane of the target cell
c) In the blood plasma
d) In the extracellular fluid
Interaction with a membrane-bound receptor will transduce the
hormonal message via __________. Ans✓✓✓a)depolarization
b)direct gene activation
c)a second messenger
d)endocytosis
Second messenger-activating hormones circulate in minute quantities
because: Ans✓✓✓a)they are not important signal molecules.
b)small concentrations of hormone can activate many intracellular
signals via amplification.
c)they are continuously released from the gland.
d)neurotransmitters also bind to hormone receptors.
Which of the following molecules act as second messengers?
Ans✓✓✓a)cAMP
b)Ca2+
c)Inositol triphosphate
d)All of the above
QUESTIONS AND VERIFIED ANSWERS |100% CORRECT |
ALREADY GRADED A
Which group of messengers is defined as acting on cells within the same
tissue? Ans✓✓✓a) Autocrines
b) Hormones
c) Paracrines
d) Eicosanoids
A major differences between neurotransmitters and hormones is that
hormones reach their destination via____ Ans✓✓✓a) Direct contact on
their target cell
b) Cerebrospinal fluid
c) Ducts
d) The blood
A major determinant of a hormone's mechanism of action is_____
Ans✓✓✓a) Whether the hormonal molecule is hydrophobic or
hydrophilic
b) Its size
c) Whether it's rapid acting or slow acting
d) If it activates gene activity or not
Receptors for steroids hormones are commonly located____ Ans✓✓✓a)
Inside the target cell
, b) On the plasma membrane of the target cell
c) In the blood plasma
d) In the extracellular fluid
Interaction with a membrane-bound receptor will transduce the
hormonal message via __________. Ans✓✓✓a)depolarization
b)direct gene activation
c)a second messenger
d)endocytosis
Second messenger-activating hormones circulate in minute quantities
because: Ans✓✓✓a)they are not important signal molecules.
b)small concentrations of hormone can activate many intracellular
signals via amplification.
c)they are continuously released from the gland.
d)neurotransmitters also bind to hormone receptors.
Which of the following molecules act as second messengers?
Ans✓✓✓a)cAMP
b)Ca2+
c)Inositol triphosphate
d)All of the above
