1. Which plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein 2. Which characteristic of a phospholipid contributes to the... 1. Which plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein 2. Which characteristic of a phospholipid contributes to the fluidity of the membrane? d. double bonds in the fatty acid tail 3. What is the primary function of carbohydrates attached to the exterior of cell membranes? a. identification of the cell 4. Water moves via osmosis. b. from an area with a high concentration of other solutes to a lower one 5. The principal force driving movement in diffusion is the c. concentration gradient 6. What problem is faced by organisms that live in fresh water? a. Their bodies tend to take in too much water. 7. Active transport must function continuously because d. diffusion is constantly moving solutes in opposite directions 8. How does the sodium-potassium pump make the interior of the cell negatively charged c. by expelling more cations than are taken in 9. What is the combination of an electrical gradient and a concentration gradient called? d. electrochemical gradient 10. What happens to the membrane of a vesicle after exocytosis? c. It fuses with and becomes part of the plasma membrane. 11. Which transport mechanism can bring whole cells into a cell? b. phagocytosis 12. In what important way does receptor-mediated endocytosis differ from phagocytosis? c. It brings in only a specifically targeted substance.
Understand the Problem
The question seems to be a series of multiple choice questions related to cell biology and membrane structure. It addresses components of the plasma membrane, properties of phospholipids, transport mechanisms, and the behavior of cells in different environments. The high-level approach involves identifying and confirming the correct answers to each question based on biological principles.
Answer
protein
The final answer is protein
Answer for screen readers
The final answer is protein
More Information
Proteins in the plasma membrane can be either peripheral proteins (found on the surface) or integral proteins (embedded within the membrane).
Tips
Students might confuse proteins with phospholipids, but phospholipids are primarily part of the bilayer structure itself and don't display the same duality in location.
