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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 7||FULL COMPLETE||LATEST
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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 7||FULL COMPLETE||LATEST
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ESTUDYTEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION
|| CHAPTERS 7||FULL COMPLETE||LATEST
### Plasma Membrane and Transport
1. **What is the function of the plasma membrane?**
a) Provides energy for the cell
b) Separates the cell from its surroundings
c) Creates proteins
d) Stores water
**✔✔ - ANSWER**: b) Separates the cell from its surroundings
2. **What type of molecules have both hydrophobic and hydrophilic regions?**
a) Transport proteins
b) Phospholipids
c) Amphipathic molecules
d) Channel proteins
**✔✔ - ANSWER**: c) Amphipathic molecules
3. **Which part of a phospholipid is hydrophobic?**
a) The phosphate group
b) The fatty acid tails
c) The protein layer
d) The cytoskeleton
**✔✔ - ANSWER**: b) The fatty acid tails
4. **What does the Fluid Mosaic Model represent?**
a) The movement of proteins inside the cell
b) The structure and movement of the plasma membrane
c) The flow of water in and out of the cell
d) The process of cell-cell recognition
**✔✔ - ANSWER**: b) The structure and movement of the plasma membrane
5. **What role does cholesterol play in the plasma membrane?**
a) Transports proteins
b) Prevents cell division
c) Helps keep fatty acids in line
d) Produces energy for the cell
**✔✔ - ANSWER**: c) Helps keep fatty acids in line
, ESTUDY
6. **Where are peripheral proteins found?**
a) Embedded inside the membrane
b) On the surface of the membrane
c) In the nucleus
d) Floating in the cytoplasm
**✔✔ - ANSWER**: b) On the surface of the membrane
7. **What are integral proteins?**
a) Proteins that stay on the outside of the membrane
b) Proteins that pass through the membrane into the hydrophobic region
c) Proteins that stay inside the nucleus
d) Proteins that move freely in the cytosol
**✔✔ - ANSWER**: b) Proteins that pass through the membrane into the hydrophobic region
8. **What are transmembrane proteins?**
a) Peripheral proteins
b) A type of integral protein that passes through the entire membrane
c) Proteins that stay in the cytoplasm
d) Proteins that transport oxygen
**✔✔ - ANSWER**: b) A type of integral protein that passes through the entire membrane
### Transport and Membrane Functions
9. **Which of the following is NOT a function of cell-surface membrane proteins?**
a) Signal transduction
b) Energy production
c) Cell-cell recognition
d) Intercellular joining
**✔✔ - ANSWER**: b) Energy production
10. **How do cells recognize each other?**
a) Through glycoproteins or sugars on the plasma membrane
b) By producing the same proteins
c) By matching DNA sequences
d) By exchanging lipids
**✔✔ - ANSWER**: a) Through glycoproteins or sugars on the plasma membrane
11. **What passes through the plasma membrane easily?**
a) Hydrophobic and nonpolar molecules
b) Ions and polar molecules
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