A. The rate at which \"X\" can diffuse through a plasma membrane is inversely pr
ID: 3472974 • Letter: A
Question
A. The rate at which "X" can diffuse through a plasma membrane is inversely proportional to the
square root of the molecular weight of X
lipid solubility and molecular weight of X
lipid solubility of X
concentration gradient for X
membrane's surface area
B.
Which of the following is not an example of lymphatic tissue?
Peyer patches
MALT
Lymphatic nodules
Macrophages
Diffuse lymphatic tissue
C.
Which of the following absorbed substances does not pass from the villus enterocyte directly into the blood stream?
glucose
tryptophan
triglycerides
vitamin B12
D.
The most common result of initial lipolysis in the gut lumen is
immediate entry of three fatty acid molecules into the TCA cycle
steatorrhea
activation of cholesterol esterases within chylomicrons
formation of two fatty acids and a 2-monoglyceride
E.
The roof of the oral cavity is formed by the
vestibule.
hard palate.
soft palate.
A, B, and C
B and C only
The pancreatic enzyme that digests fat is a(n)
protease
-amylase
lipase
esterase
G.
During osmosis,
water moves away from the solution with the higher osmotic pressure.
water moves into a hypotonic solution.
the solute moves against its concentration gradient.
all of the above events would occur.
none of the above events would occur
H.
The diffusion coefficient of N2 is approximately __________ times that of O2.
0.5
1.5
20
I.
The heme molecule contains an iron atom in the middle of its porphyrin. What is the state of this iron atom?
reduced [Fe(II), or Fe2+]
oxidized [Fe(III), or Fe3+]
metallic
J.
The diffusion coefficient of CO2 is approximately __________ times that of O2.
20
1.5
0.5
K.
Assume two containers of the same gas mixture, where P1=P2, V1=V2, and T1=T2. What happens to P2 if I decrease V2 but leave T1=T2?
P2 increases
P2 decreases
P2 stays the same
square root of the molecular weight of X
lipid solubility and molecular weight of X
lipid solubility of X
concentration gradient for X
membrane's surface area
B.
Which of the following is not an example of lymphatic tissue?
Peyer patches
MALT
Lymphatic nodules
Macrophages
Diffuse lymphatic tissue
C.
Which of the following absorbed substances does not pass from the villus enterocyte directly into the blood stream?
glucose
tryptophan
triglycerides
vitamin B12
D.
The most common result of initial lipolysis in the gut lumen is
immediate entry of three fatty acid molecules into the TCA cycle
steatorrhea
activation of cholesterol esterases within chylomicrons
formation of two fatty acids and a 2-monoglyceride
E.
The roof of the oral cavity is formed by the
vestibule.
hard palate.
soft palate.
A, B, and C
F.B and C only
The pancreatic enzyme that digests fat is a(n)
protease
-amylase
lipase
esterase
G.
During osmosis,
water moves away from the solution with the higher osmotic pressure.
water moves into a hypotonic solution.
the solute moves against its concentration gradient.
all of the above events would occur.
none of the above events would occur
H.
The diffusion coefficient of N2 is approximately __________ times that of O2.
0.5
1.5
20
I.
The heme molecule contains an iron atom in the middle of its porphyrin. What is the state of this iron atom?
reduced [Fe(II), or Fe2+]
oxidized [Fe(III), or Fe3+]
metallic
J.
The diffusion coefficient of CO2 is approximately __________ times that of O2.
20
1.5
0.5
K.
Assume two containers of the same gas mixture, where P1=P2, V1=V2, and T1=T2. What happens to P2 if I decrease V2 but leave T1=T2?
P2 increases
P2 decreases
P2 stays the same
Explanation / Answer
1- ansD-concentration gradient for X
According to Fick's law the rate of diffusion is directly proportional to the concentration gradient
i.e.- dn/dt = P*A {dc/dx}
where-P-permeability
A- membrane area
dc/dx-concentration gradient
rate of diffusion= dn/dt
2 ans-Macrophage
are large specialised cell and are important cells of the immune system derived from the monocyte cells.
3 ans-triglycerides
triglycerides or fats can not directly does not pass from the villus enterocyte they must be enzymatically digested to get monoglyceride and fatty acids which can easily absorbed or diffuse and transported into the enterocyte.
4 ans-formation of two fatty acids and a 2-monoglyceride
luminal hydrolysis of triglycerides are 2-monoglycerides and free fatty acid
5 ans-B and C only
The soft palate (velum palatinum) and hard palat
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.