Biology 11, Chapter 1Cell Structure And Functions - 17

Biology 11, Chapter 1
Cell Structure And Functions - 17

1. Cell membrane gives to the cell?

a) Shape and automatic support
b) Mechanical support
c) Shape and mechanical support
d) Shape and technical support

2. In cell membrane The most common lipids are?

a) Phospholipids.
b) Glycoproteins.
c) Glycolipids.
d) Cholesterols.

3. Membranes also contain?

a) Glycolipids, cholesterols and glycoproteins.
b) Glycolipids, cellulose and glycoproteins.
c) Glycolipids, cholesterols and cellulose.
d) Proteins, cholesterols and glycoproteins.

4. The thickness of the cell membrane is about?

a) 7nm
b) 7mm
c) 17mm
d) 17nm

5. Sanger and Nicholson model proposes that the membrane is a?

a) Proteins bilayer
b) Cellulose bilayer
c) Phospholipids bilayer
d) Cholesterols bilayer

6. Sanger and Nicholson model proposes that the membrane is a phospholipids bilayer in which protein molecules are?

a) Partially or wholly embedded.
b) Partially embedded.
c) Wholly embedded.
d) Not embedded.

7. In Sanger and Nicholson model the membrane protein are?

a) The protein are scattered throughout the membrane in an irregular pattern that can vary from membrane to membrane.
b) The protein are scattered throughout the membrane in an irregular pattern that cannot vary from membrane to membrane.
c) The protein are scattered in an irregular pattern that can vary from membrane to membrane.
d) The protein are scattered throughout the membrane in an regular pattern that can vary from membrane to membrane.

8. In Sanger and Nicholson model, the mosaic distribution of protein is supported especially by?

a) Electron monograph of freeze fractured membrane.
b) Electron micrograph of freeze fractured membrane.
c) Electron anemograph of freeze fractured membrane.
d) Electron micrograph of thaw fractured membrane.

9. When Sanger and Nicholson put forward the fluid mosaic model of membrane structure?

a) 1927
b) 1872
c) 1972
d) 1977

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