BioSci E109 Exam Questions With Complete Solutions
_______ leads to greater fat production by the liver through
activation of SRBP1, whereas ______ leads to greater hepatic
fat production by activating ChREBP. Correct Answers
Ethanol; Fructose
1—ingestion
2—formation of micelles in aqueous environment of digestive
tract
3—micelle breaks open, free fatty acids and cholesterol diffuse
into enterocytes
4—bile salts coat and emulsify micelles, breaking up larger
micelles into smaller ones
5— with the help of co-lipase, lipase hydrolyzes fats at the edge
of micelles
6—chylomicrons formed in enterocyte, transferred into lymph
system
7—free fatty acids and cholesterol collect in hydrophobic center
of micelle Correct Answers 1, 2, 4, 5, 7, 3, 6
A blocked ureter would mean Correct Answers Flow from the
kidney draining through that ureter would be blocked and
couldn't reach the bladder
A change in smooth muscle cell contraction in the absence of a
change in electrical potential of the cells is described as a(n)
Correct Answers pharmacomechanical coupling.
A contraction in cardiac muscle cells involves Correct Answers
-extracellular calcium
,-intracellular calcium
-troponin
-myosin
-all of the above*
A contraction that generates enough force to move a load is
known as ________, whereas one that generates force that
equals the load is known as ________. Correct Answers
isotonic, isometric
A decrease in the volume of a heart chamber will ... Correct
Answers increase pressure in that chamber
A non-athletic student decided to go train for a bike race. Over
time, she increased the mitochondrial density in her leg muscles
by 10%. If she could measure her a-v O2 difference before and
after training, what is the most likely result? Correct Answers
It will be higher after training
A patient complains of having difficulty breathing. You measure
the activity of rectus abdomens and the internal intercostals and
notice that the muscles are very active during even during quiet
breathing. You conclude that the patient might be trying to
compensate for Correct Answers reduced lung elasticity
A patient was supposed to receive an IV infusion of 0.9% saline.
An intern made a horrible mistake and gave the patient an IV of
water with 5% dextrose (=300mOsm). Relative to the patients
tissues, the IV infusion was (assume that the intracellular fluid
of the patients cells was a 300mOsm Correct Answers
, A person experiencing low blood pressure may respond in the
following ways, EXCEPT: Correct Answers -Increase in
peripheral resistance
-Decrease cardiac output*
-Decreased parasympathetic response
-Increase in venous tone
A person who eats a lot takes a ______ maximizing strategy
towards digestion. We can expect such an individual to have a
_________ digestive tract, which would include elevated release
of _____. Correct Answers rate; larger and more active;
glucose-dependent insulinotropic peptide (GIP)
A property of extreme fast twitches that allows them to complete
a contraction so quickly is a high level of Correct Answers
A rapid spinal reflex Correct Answers Doesn't require the
higher control centers of the brain to integrate the response
A researcher genetically engineered a myocardial cell so that the
action potential did not have a plateau phase. As a result, the
cells were more likely to Correct Answers Enter tetanus or start
fillibrating
A similarity between thecal cells and Leydig cells is that they
both release ____. Correct Answers
According to the law of LaPlace, when comparing two alveoli
lined with fluid, pressure in the one with the ________ diameter
will be greater. Correct Answers smaller
_______ leads to greater fat production by the liver through
activation of SRBP1, whereas ______ leads to greater hepatic
fat production by activating ChREBP. Correct Answers
Ethanol; Fructose
1—ingestion
2—formation of micelles in aqueous environment of digestive
tract
3—micelle breaks open, free fatty acids and cholesterol diffuse
into enterocytes
4—bile salts coat and emulsify micelles, breaking up larger
micelles into smaller ones
5— with the help of co-lipase, lipase hydrolyzes fats at the edge
of micelles
6—chylomicrons formed in enterocyte, transferred into lymph
system
7—free fatty acids and cholesterol collect in hydrophobic center
of micelle Correct Answers 1, 2, 4, 5, 7, 3, 6
A blocked ureter would mean Correct Answers Flow from the
kidney draining through that ureter would be blocked and
couldn't reach the bladder
A change in smooth muscle cell contraction in the absence of a
change in electrical potential of the cells is described as a(n)
Correct Answers pharmacomechanical coupling.
A contraction in cardiac muscle cells involves Correct Answers
-extracellular calcium
,-intracellular calcium
-troponin
-myosin
-all of the above*
A contraction that generates enough force to move a load is
known as ________, whereas one that generates force that
equals the load is known as ________. Correct Answers
isotonic, isometric
A decrease in the volume of a heart chamber will ... Correct
Answers increase pressure in that chamber
A non-athletic student decided to go train for a bike race. Over
time, she increased the mitochondrial density in her leg muscles
by 10%. If she could measure her a-v O2 difference before and
after training, what is the most likely result? Correct Answers
It will be higher after training
A patient complains of having difficulty breathing. You measure
the activity of rectus abdomens and the internal intercostals and
notice that the muscles are very active during even during quiet
breathing. You conclude that the patient might be trying to
compensate for Correct Answers reduced lung elasticity
A patient was supposed to receive an IV infusion of 0.9% saline.
An intern made a horrible mistake and gave the patient an IV of
water with 5% dextrose (=300mOsm). Relative to the patients
tissues, the IV infusion was (assume that the intracellular fluid
of the patients cells was a 300mOsm Correct Answers
, A person experiencing low blood pressure may respond in the
following ways, EXCEPT: Correct Answers -Increase in
peripheral resistance
-Decrease cardiac output*
-Decreased parasympathetic response
-Increase in venous tone
A person who eats a lot takes a ______ maximizing strategy
towards digestion. We can expect such an individual to have a
_________ digestive tract, which would include elevated release
of _____. Correct Answers rate; larger and more active;
glucose-dependent insulinotropic peptide (GIP)
A property of extreme fast twitches that allows them to complete
a contraction so quickly is a high level of Correct Answers
A rapid spinal reflex Correct Answers Doesn't require the
higher control centers of the brain to integrate the response
A researcher genetically engineered a myocardial cell so that the
action potential did not have a plateau phase. As a result, the
cells were more likely to Correct Answers Enter tetanus or start
fillibrating
A similarity between thecal cells and Leydig cells is that they
both release ____. Correct Answers
According to the law of LaPlace, when comparing two alveoli
lined with fluid, pressure in the one with the ________ diameter
will be greater. Correct Answers smaller
