Homework Answers
Among the molecules listed above, phospholipids, glycolipids, glycoproteins and cholesterol are contents of cell membrane.
*To have a better and broader picture, please read Fluid mosaic model of cell membrane from any book.
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QUESTION 4 Which of the following molecules are contained in a cell membrane? Check all that...
MEMBRANE STRUCTURE AND TRANSPORT ACROSS CELL MEMBRANES 1. An organelle that is characterized by extensive, folded...
MEMBRANE STRUCTURE AND TRANSPORT ACROSS CELL MEMBRANES 1. An organelle that is characterized by extensive, folded membranes and is often associated with ribosomes 2. Label the following diagram Qutsde of cel LE nside of cell 3. List 4 functions of the plasma membrane c. d. 4. Complete the table below with the role cach component of the plasma membrane plays Plasma membrane components Role in the membrane Phospholipid Bilayer Cholesterol Glycopeoteins Glycolipids Protein Receptor Site Protein channel Protein Carrier 5....
Part B Which of the following are sources of cholesterol for the body? Check all that...
Part B Which of the following are sources of cholesterol for the body? Check all that apply. Eating vegetables Synthesis in the pancreas from proteins Eating meats and eggs Synthesis in the liver from lipids Drinking milk Synthesis in the liver from carbohydrates Synthesis in the pancreas from nucleic acids Synthesis in the liver from fats
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated far...
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated farty acids Membeane proteins can be located a. entirely within the membrane b on the surface of the membeane c. in either position d. the position cannot be determined 20. 21. Which property has not been observed for membrane proseins? a energy storage b. transport of substances into...
Which of the following is NOT true of lipid rafts? The are less fluid than the...
Which of the following is NOT true of lipid rafts? The are less fluid than the surrounding membrane The can serve to localize components of reactions and pathways They contain a higher concentration of cholesterol than the surrounding membrane They contain a higher concentration of glycolipids than the surrounding membrane Lipid composition (i.e. the % of each type of lipid) of a membrane often differs (Select any/all that apply) OAt different locations in the cell (i.e. in different organelles) In...
Which of the following is NOT a property of membrane lipids Select one: a. The two...
Which of the following is NOT a property of membrane lipids Select one: a. The two leaflets of the plasma membrane have different lipid composition b. Most fatty acids attached to lipids have a length of 16 to 22 carbon atoms c. The plasma membrane is composed of a mixture of glycerolipids, sphingolipids and cholesterol. d. Phospholipids prefer to form micelles e. Cholesterol increases the order of fatty acid side chains
Please answer as many as you can. Will rate!! Across 4. Type of protein that spans...
Please answer as many as you can. Will
rate!!
Across
4. Type of protein that spans the entire
membrane
5. One of the amino acid residues used to form
O-linked glycoproteins.
7. Newly synthesized phospholipids are
inserted into the _____ side of the smooth ER membrane.
8. Type of bond used to link membrane proteins
to a membrane lipid
10. One of the sugars that can be added to
phosphatidylinositol to make glycosylphosphatidylinosiol
12. Enzyme that joins fatty acids and...
Question 5 of 24 > Which of these molecules are ketones? Check all that apply. OB...
Question 5 of 24 > Which of these molecules are ketones? Check all that apply. OB DA HH Гр OF H3C—0_CH
Antimicrobial methods target different parts of a microbial cell or structure Enveloped viruses have a membrane...
Antimicrobial methods target different parts of a microbial cell or structure Enveloped viruses have a membrane which has proteins and phospholipids that enhance attachment, the first stage of viral replication. Therefore, damage to the envelope prevents viral replication. Non enveloped viruses are able to tolerate harsher environments. Proteins regulate cellular metabolism and form cell structure, damage to protein bonds through heat or certain chemicals denature proteins and render them non functional. Chemicals radiation and heat can alter nucleic acids which...
Are the following statements true or false? 1. Membrane carbohydrates occur as either glycoproteins or glycolipids,...
Are the following statements true or false? 1. Membrane carbohydrates occur as either glycoproteins or glycolipids, and most always face away from the cytosol. 2. The melting temperature of a phospholipid bilayer increase with an increased content of unsaturated fatty acid. 3. Molecules which permeate a plasma membrane by facilitated diffusion require cells to use energy (ATP) for their transfer. 4. “Catabolism” refers to synthetic processes that occur inside the cell. 5. Type I collagen has a membrane bilayer-spanning domain....
Question 24 Which of the following categories of membrane proteins is most likely to have restricted...
Question 24 Which of the following categories of membrane proteins is most likely to have restricted lateral mobility in a membrane? enzyme transporter O anchor O receptor all are restricted Question 5 New membrane synthesis occurs by spontaneous aggregation of free phospholipids into a new bilayer incorporation of phospholipids into one face of a preexisting membrane and their specific redistribution by enzymes like flippases incorporation of phospholipids into both faces of a preexisting membrane at the same time formation of...
MEMBRANE STRUCTURE AND TRANSPORT ACROSS CELL MEMBRANES 1. An organelle that is characterized by extensive, folded membranes and is often associated with ribosomes 2. Label the following diagram Qutsde of cel LE nside of cell 3. List 4 functions of the plasma membrane c. d. 4. Complete the table below with the role cach component of the plasma membrane plays Plasma membrane components Role in the membrane Phospholipid Bilayer Cholesterol Glycopeoteins Glycolipids Protein Receptor Site Protein channel Protein Carrier 5....
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated farty acids Membeane proteins can be located a. entirely within the membrane b on the surface of the membeane c. in either position d. the position cannot be determined 20. 21. Which property has not been observed for membrane proseins? a energy storage b. transport of substances into...
Which of the following is NOT true of lipid rafts? The are less fluid than the surrounding membrane The can serve to localize components of reactions and pathways They contain a higher concentration of cholesterol than the surrounding membrane They contain a higher concentration of glycolipids than the surrounding membrane Lipid composition (i.e. the % of each type of lipid) of a membrane often differs (Select any/all that apply) OAt different locations in the cell (i.e. in different organelles) In...
Please answer as many as you can. Will
rate!!
Across
4. Type of protein that spans the entire
membrane
5. One of the amino acid residues used to form
O-linked glycoproteins.
7. Newly synthesized phospholipids are
inserted into the _____ side of the smooth ER membrane.
8. Type of bond used to link membrane proteins
to a membrane lipid
10. One of the sugars that can be added to
phosphatidylinositol to make glycosylphosphatidylinosiol
12. Enzyme that joins fatty acids and...
Question 5 of 24 > Which of these molecules are ketones? Check all that apply. OB DA HH Гр OF H3C—0_CH
Antimicrobial methods target different parts of a microbial cell or structure Enveloped viruses have a membrane which has proteins and phospholipids that enhance attachment, the first stage of viral replication. Therefore, damage to the envelope prevents viral replication. Non enveloped viruses are able to tolerate harsher environments. Proteins regulate cellular metabolism and form cell structure, damage to protein bonds through heat or certain chemicals denature proteins and render them non functional. Chemicals radiation and heat can alter nucleic acids which...
Question 24 Which of the following categories of membrane proteins is most likely to have restricted lateral mobility in a membrane? enzyme transporter O anchor O receptor all are restricted Question 5 New membrane synthesis occurs by spontaneous aggregation of free phospholipids into a new bilayer incorporation of phospholipids into one face of a preexisting membrane and their specific redistribution by enzymes like flippases incorporation of phospholipids into both faces of a preexisting membrane at the same time formation of...
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