A. the ratio of the area of lipids extracted from red cell membranes to the area

Question

A. the ratio of the area of lipids extracted from red cell membranes to the area of the
membranes was 2:1
B. particles were seen in freeze-fractured samples of membranes
C. addition of certain antibodies to cells caused patching of the antigens.
D. Certain proteins can be labeled from either side of a membrane
E. Certain proteins can be labeled from only one side of a membrane.

Which of the above supports the idea that proteins penetrate completely through the
membrane?
a. A and C
b. B and D
c. B and C
d. D and E
e. D alone

Explanation / Answer

A. the ratio of the area of lipids extracted from red cell membranes to the area of the
membranes was 2:1
B. particles were seen in freeze-fractured samples of membranes
C. addition of certain antibodies to cells caused patching of the antigens.
D. Certain proteins can be labeled from either side of a membrane
E. Certain proteins can be labeled from only one side of a membrane.

spectrin,actin,protein 4.1, ankyrin -peripheral proteins

Which of the above supports the idea that proteins penetrate completely through the
membrane?
a. A and C
b. B and D
c. B and C
d. D and E
e. D alone

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