Please answer the 3 following question and provide a short reason why you chose
ID: 11343 • Letter: P
Question
Please answer the 3 following question and provide a short reason why you chose your answer.
31. You observe that in certain families the segregation of a truncated deletion variant of a chromosome
correlates with developing adult onset diabetes. This observation provides direct experimental evidence for
which of the following. (choose one answer)
A) Chromosome theory of inheritance.
B) The cell theory of life.
C) DNA constitutes the genetic material.
D) Chromosomes have to be a certain length to prevent disease.
32. Which of the following statements concerning membrane fluidity are correct?
A) Non-covalent interactions between lipid fatty acid tails are what ultimately cause the phase transition of
membranes from a fluid state to a frozen state.
B) Increased fatty acid tail length and saturation will tend to decrease membrane fluidity.
C) The presence of cholesterol in the membrane will make lipid bilayers less fluid at high temperatures.
D) The presence of cholesterol in the membrane will make lipid bilayers more fluid at low temperatures.
E) All are correct
F) A, B and C are correct
G) A, B and D are correct
33. Which of the following contribute to the asymmetric nature of lipids in the plasma membrane?
A) There is a limited set of enzymes that transfer specific lipid head groups during lipid biosynthesis.
B) The enzymes that catalyze glycolipid synthesis are only found on the lumen side of the ER
membrane.
C) Lipid rafts flip specific phospholipids from one leaflet of the membrane to the other.
D) The rapid diffusion of proteins in the plane of the membrane can force lipids to jump from one side
of the membrane to the other.
E) All of the above
Explanation / Answer
Please answer the 3 following question and provide a short reason why you chose your answer.
31. You observe that in certain families the segregation of a truncated deletion variant of a chromosome
correlates with developing adult onset diabetes. This observation provides direct experimental evidence for
which of the following. (choose one answer)
A) Chromosome theory of inheritance.
B) The cell theory of life.
C) DNA constitutes the genetic material.
D) Chromosomes have to be a certain length to prevent disease.
32. Which of the following statements concerning membrane fluidity are correct?
A) Non-covalent interactions between lipid fatty acid tails are what ultimately cause the phase transition of
membranes from a fluid state to a frozen state.
B) Increased fatty acid tail length and saturation will tend to decrease membrane fluidity.
C) The presence of cholesterol in the membrane will make lipid bilayers less fluid at high temperatures.
D) The presence of cholesterol in the membrane will make lipid bilayers more fluid at low temperatures.
E) All are correct
F) A, B and C are correct
G) A, B and D are correct
33. Which of the following contribute to the asymmetric nature of lipids in the plasma membrane?
A) There is a limited set of enzymes that transfer specific lipid head groups during lipid biosynthesis.
B) The enzymes that catalyze glycolipid synthesis are only found on the lumen side of the ER
membrane.
C) Lipid rafts flip specific phospholipids from one leaflet of the membrane to the other.
D) The rapid diffusion of proteins in the plane of the membrane can force lipids to jump from one side
of the membrane to the other.
E) All of the above