Final E109 Exam Questions With Complete Solutions
_______ channels are critical for human hearing, whereas ____
channels respond to neurotransmitters, and ____ channels
respond to changes in electrical activity across a membrane
.Options: optically-gated; mechanically- gated; ligand- gated;
voltage-gated Correct Answers 1. mechanically-gated
2. ligand-gated
3. voltage-gated
(answer 1) channels are critical for human hearing, where as
(answer 2) channels respond to neurotransmitters, and voltage-
gated channels are sensitive to changes in electrical activity
across a membrane. Correct Answers answer 1: Mechanically-
gated
answer 2: ligand-gated
answer 3: voltage-gated
1. Elevated blood volume causes (answer 1).
2. Which prompts release of (answer 2).
3. This triggers (answer 3) in vessels leading to the glomeruli.
4. The (answer 4) blood flow to glomeruli (answer 5) the
filtration rate.
5. Ultimately leading to (answer 6) excretion of water. Correct
Answers 1. increased stress in atrial myocardial cells
2. atrial natriuretic peptides (ANP)
3. vasodilation
4. The increased
5. increases
6. increased
,1. High osmarity in the blood is sensed by (answer 1).
2. These receptor cells then (answer 2) and stimulate (answer 3)
3. The following depolarization of the cells causes the release of
(answer 4).
4. This hormone then increases (answer 5). Correct Answers
Answer 1: osmoreceptors in the hypothalamus
Answer 2: shrivel or shrink in size
Answer 3: mechanically -gated channels
Answer 4: vasopressin
Answer 5: reabsorption of water in the kidneys to maintain
water in the body
A carrier protein using secondary active transport hydrolyzes
ATP to move molecules against their concentration gradient.
T/F Correct Answers F
A cell containing 5M of glucose is placed in a solution
containing 5M of glucose. After one hour the cell contains 7.5
M of glucose and the solution contains 2.5M of glucose. What
process is likely to have occured? Correct Answers active
transport
a cellular response initiated by a G protein coupled receptor is
not likely to involve Correct Answers voltage gated ion
channels
a metabolic disorder called hypokalemia results in abnormally
low K+ concentration is extracellular fluid. This condition will
,Correct Answers make the resting membrane potential more
negative
a rapid spinal reflex Correct Answers regulates sensory afferent
input to the spinal cord
a session of exercise where active tissues require (answer 1)
oxygen than an individual's VO2max is considered (answer 2)
exercise. Correct Answers less; aerobic
Above is the electromyocardiogramtaken from a healthy patient.
Match the appropriate section of the ECG to the action of the
heart. (Pic 13)
P : answer 1
Between P and Q: answer 2
Q-R-S complex: answer 3
Between S and T: answer 4
T to next P: answer 5 Correct Answers Answer 1: SA node
depolarises atria
Answer 2: atria contract
Answer 3: depolarisation of atria and depolarisation of ventricles
Answer 4: ventricles contract
Answer 5: atria and ventricular diastole
All connective tissue includes cells. Correct Answers True
All the end of expiration alveolar pressure will be Correct
Answers equal to atmospheric pressure
, An adult ostrich has arterioles with the same diameter as the
aorta in hatchlings (young ostrich), although the adult's
arterioles has two time the length compared to the aorta of the
hatchling.
By what factor does the resistance to blood flow change from
hatchling's aorta and to the adult's arterioles? Correct Answers
Need Poiseuille's Law: R= (L*n)/r^4
R=L
=La/Ln = (2Ln)/(Ln) =2
Andrew has defective alpha receptors on his arterioles casing
him to be less responsive to norepinephrine. This might cause
chronic (answer 1) because his arterioles simply won't (answer
2) in response to increased norepinephrine levels. Correct
Answers Hypotensions; constrict
Aortic and Carotid bodies are used to ... Correct Answers
Monitor the partial pressure of CO2 in our plasma
As a pacemaker cells membrane potential gradually rises
because I_f (funny) channels that allow (answer 1) , and once
the membrane potential reaches -40mV it triggers (answer 2)
channels to open, which allows (answer 3) and generate the
action potential. Finally slow (answer 4) channels open, which
allows only K+ to flow out. Correct Answers Answer 1: I_f
(funny)
Answer 2: Na+ to flow in and K+ to flow out
Answer 3: voltage-gated Ca2+
Answer 4: Ca2+ to flow inward
Answer 5:voltage-gated K+
Answer 6: only K+ to flow out
_______ channels are critical for human hearing, whereas ____
channels respond to neurotransmitters, and ____ channels
respond to changes in electrical activity across a membrane
.Options: optically-gated; mechanically- gated; ligand- gated;
voltage-gated Correct Answers 1. mechanically-gated
2. ligand-gated
3. voltage-gated
(answer 1) channels are critical for human hearing, where as
(answer 2) channels respond to neurotransmitters, and voltage-
gated channels are sensitive to changes in electrical activity
across a membrane. Correct Answers answer 1: Mechanically-
gated
answer 2: ligand-gated
answer 3: voltage-gated
1. Elevated blood volume causes (answer 1).
2. Which prompts release of (answer 2).
3. This triggers (answer 3) in vessels leading to the glomeruli.
4. The (answer 4) blood flow to glomeruli (answer 5) the
filtration rate.
5. Ultimately leading to (answer 6) excretion of water. Correct
Answers 1. increased stress in atrial myocardial cells
2. atrial natriuretic peptides (ANP)
3. vasodilation
4. The increased
5. increases
6. increased
,1. High osmarity in the blood is sensed by (answer 1).
2. These receptor cells then (answer 2) and stimulate (answer 3)
3. The following depolarization of the cells causes the release of
(answer 4).
4. This hormone then increases (answer 5). Correct Answers
Answer 1: osmoreceptors in the hypothalamus
Answer 2: shrivel or shrink in size
Answer 3: mechanically -gated channels
Answer 4: vasopressin
Answer 5: reabsorption of water in the kidneys to maintain
water in the body
A carrier protein using secondary active transport hydrolyzes
ATP to move molecules against their concentration gradient.
T/F Correct Answers F
A cell containing 5M of glucose is placed in a solution
containing 5M of glucose. After one hour the cell contains 7.5
M of glucose and the solution contains 2.5M of glucose. What
process is likely to have occured? Correct Answers active
transport
a cellular response initiated by a G protein coupled receptor is
not likely to involve Correct Answers voltage gated ion
channels
a metabolic disorder called hypokalemia results in abnormally
low K+ concentration is extracellular fluid. This condition will
,Correct Answers make the resting membrane potential more
negative
a rapid spinal reflex Correct Answers regulates sensory afferent
input to the spinal cord
a session of exercise where active tissues require (answer 1)
oxygen than an individual's VO2max is considered (answer 2)
exercise. Correct Answers less; aerobic
Above is the electromyocardiogramtaken from a healthy patient.
Match the appropriate section of the ECG to the action of the
heart. (Pic 13)
P : answer 1
Between P and Q: answer 2
Q-R-S complex: answer 3
Between S and T: answer 4
T to next P: answer 5 Correct Answers Answer 1: SA node
depolarises atria
Answer 2: atria contract
Answer 3: depolarisation of atria and depolarisation of ventricles
Answer 4: ventricles contract
Answer 5: atria and ventricular diastole
All connective tissue includes cells. Correct Answers True
All the end of expiration alveolar pressure will be Correct
Answers equal to atmospheric pressure
, An adult ostrich has arterioles with the same diameter as the
aorta in hatchlings (young ostrich), although the adult's
arterioles has two time the length compared to the aorta of the
hatchling.
By what factor does the resistance to blood flow change from
hatchling's aorta and to the adult's arterioles? Correct Answers
Need Poiseuille's Law: R= (L*n)/r^4
R=L
=La/Ln = (2Ln)/(Ln) =2
Andrew has defective alpha receptors on his arterioles casing
him to be less responsive to norepinephrine. This might cause
chronic (answer 1) because his arterioles simply won't (answer
2) in response to increased norepinephrine levels. Correct
Answers Hypotensions; constrict
Aortic and Carotid bodies are used to ... Correct Answers
Monitor the partial pressure of CO2 in our plasma
As a pacemaker cells membrane potential gradually rises
because I_f (funny) channels that allow (answer 1) , and once
the membrane potential reaches -40mV it triggers (answer 2)
channels to open, which allows (answer 3) and generate the
action potential. Finally slow (answer 4) channels open, which
allows only K+ to flow out. Correct Answers Answer 1: I_f
(funny)
Answer 2: Na+ to flow in and K+ to flow out
Answer 3: voltage-gated Ca2+
Answer 4: Ca2+ to flow inward
Answer 5:voltage-gated K+
Answer 6: only K+ to flow out
