The Cell Membrane and Cell Transport Webquest
Namo: Kerrk.|lightowel
Task I:nside the cel Membrane video
use any link below to watch the insides com Membrane video bu the Amoeba Sisters. As you watch, answe rievolowing questions.
1. What does the term semi-permeable mean?
2. True or False? … All types of cells have a cell membrar
3. Which part of a phospholipid is hydrophilic
4. What does the term hydrophilic mean?
5. Which part of a phospholipid is hydrophobic?
6. What does the term hydrophobic mean
7. What is the sienificance of the fluid nature of the fluid mosaic model?
8. What is the role of cholesterol in a phospholipid bilayer?
9. Where are peripheral proteins found?
10. Where are integral proteins found?
11. Which type of protein allows materials in and out of the cell?.
12. Why the roles of glycoproteins and glycolipids?
13. Label the phospholipid tail, phospholipid head, and the protein in the diagram. Is the protein shown in the diagram a peripheral protein or integral protein? How do you know?
14. Why are the heads of the phospholipid bilayer located on the outside of the membrane?
1. The term semi-permeable means that the cell membrane allows some substances to pass through while blocking others.
2. True. All types of cells have a cell membrane.
3. The phosphate head of a phospholipid is hydrophilic.
4. Hydrophilic means "water-loving" and refers to substances that are attracted to or soluble in water.
5. The fatty acid tails of a phospholipid are hydrophobic.
6. Hydrophobic means "water-fearing" and refers to substances that repel or are insoluble in water.
7. The fluid nature of the fluid mosaic model is significant because it allows the cell membrane to be flexible and dynamic, allowing for various cellular processes.
8. Cholesterol helps to stabilize the phospholipid bilayer by preventing the fatty acid tails from packing too closely together.
9. Peripheral proteins are found on the surface of the cell membrane, either on the inner or outer surface.
10. Integral proteins are embedded within the phospholipid bilayer, spanning across the entire membrane.
11. Transport proteins allow materials to pass in and out of the cell.
12. Glycoproteins and glycolipids serve as identification markers and are involved in cell-cell recognition and communication.
13. The phospholipid tails are the hydrophobic part of the phospholipid, the phospholipid head is hydrophilic, and the protein is labeled as an integral protein. It is an integral protein because it is embedded within the phospholipid bilayer.
14. The heads of the phospholipid bilayer are located on the outside of the membrane because they are hydrophilic and interact with the watery environment both inside and outside of the cell.
1. The term semi-permeable means that only certain substances can pass through the cell membrane while others are blocked.
2. True, all types of cells have a cell membrane.
3. The hydrophilic part of a phospholipid is the phosphate head.
4. Hydrophilic means that it is attracted to water and can dissolve in water.
5. The hydrophobic part of a phospholipid is the fatty acid tail.
6. Hydrophobic means that it repels water and does not dissolve in water.
7. The fluid nature of the fluid mosaic model is significant because it allows for flexibility and movement of molecules within the cell membrane.
8. Cholesterol in a phospholipid bilayer helps maintain the fluidity and stability of the membrane.
9. Peripheral proteins are found on the outer surface of the cell membrane.
10. Integral proteins are embedded within the cell membrane.
11. Transport proteins allow materials to move in and out of the cell.
12. Glycoproteins and glycolipids play roles in cell recognition and cell-to-cell communication.
13. The phospholipid tail is the fatty acid tail, the phospholipid head is the phosphate head, and the protein in the diagram is an integral protein. It is an integral protein because it is embedded within the phospholipid bilayer.
14. The heads of the phospholipid bilayer are located on the outside of the membrane because they are hydrophilic, meaning they are attracted to water.