Phosphatidylserine - Study guides, Revision notes & Summaries

Cell membrane - Phosphatidylcholine and sphingomyelin on EC side Phosphatidylethanolamine and phosphatidylserine on inside Increase in cholesterol => decrease in fluidity/permeability In some cells, covered by carb-rich glycocalyx Receptor-mediated endocytosis => both receptor and ligand get ingested by clathrin-coated vesicle Disorders of transport - CF: defect in CTFR => salty sweat and thick mucus Cystinuria: inability to reabsorb cys in kidneys => kidney stones Hereditar...

BIOL 4100 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE vast majority of double bonds in unsaturated fatty acids are _______ cis double bonds in fatty acids create _______ kinks in glycerophospholipids ________ replaces one of the fatty chains phophoester phosphate group has what charge? negatively groups could be positive example: ethenolamine, choline zwitterionic groups example: serine slightly polar group example: cyclic sugar inositol How does ...

MMSC 490 Exam 3 Questions & Answers What is the primary reason that mammalian red blood cells are used in the study of the plasma membrane? a. There are a lot of them and they are easily obtained. b. They contain larger plasma membranes than any other cell type. c. They are of particular interest because they are made up of a lipid monolayer. d. They lack nuclei and membrane-bounded organelles. - Answer ️️ -d. They lack nuclei and membrane-bounded organelles. Two examples of membrane...

The amount of cholesterol in cell membranes varies from ~40% of lipids in the ______________ membrane to ~10% of lipids in the __________________ membranes correct answers The amount of cholesterol in cell membranes varies from ~40% of lipids in the plasma membrane to ~10% of lipids in the endoplasmic reticulum membranes What do high local concentrations of cholesterol do to phospholipids and membrane fluidity? correct answers prevent lateral movement of phospholipids and decrease membrane fl...

Classes of membrane molecules is a marker for the phagocytosis of apoptotic cells Phosphatidylserine Pollen grains are treated with Colchicine in culture Resulting plants are dihaploid and fertile Nyctinasty closing of leaves or flowers at night Epinasty perplexing behavior seen during the flooding of roots of plants Food source of black bread mold (a zygomycete) has been depleted a zygosporangia forms Membranes responsible for respiration in developing bi...

BIOL 4100 EXAM 3 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Cell membranes are _________ barriers selective What is the purpose of receptors for the cell? enable the cell to receive and process information What is the purpose of channels and transporters for the cell? they move stuff in and out What is the purpose of adhesions and cytoskeleton for the cell? they promote movement Membrane alone allows ___________ permeability selective Membrane lipids are ____...

Which of the following statements about the cell cycle is/are TRUE? A: The cyclin proteins are expressed only during specific times of the cell cycle. B: The cyclin-dependent kinases are expressed throughout the cell cycle, but only active during specific times. C: The cell cycle can be regulated by both environmental stimuli and intracellular conditions. D: The cell cycle has multiple checkpoints. E: All of the above. - ️️E: All of the above Oxidative metabolism of glucose includes ...

MMSC 490 Exam 3 Questions and Answers What is the primary reason that mammalian red blood cells are used in the study of the plasma membrane? a. There are a lot of them and they are easily obtained. b. They contain larger plasma membranes than any other cell type. c. They are of particular interest because they are made up of a lipid monolayer. d. They lack nuclei and membrane-bounded organelles. - Answer ️️ -d. They lack nuclei and membrane-bounded organelles. Two examples of membra...

BIOL 4100 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE width of phospholipid bilayer 3 nm one fatty acyl chain attached to glycerol by an ester linkage, and one attached by an ether linkage plasmalogens 4 major head groups of phosphoglycerides phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylserine (PS), and phosphatidylinositol (PI) an amino alcohol with a long hydrocarbon chain sphingosine sphingolipids with a phosphocholine head sphin...

MMSC 490 Exam 3 Questions and Answers What is the primary reason that mammalian red blood cells are used in the study of the plasma membrane? a. There are a lot of them and they are easily obtained. b. They contain larger plasma membranes than any other cell type. c. They are of particular interest because they are made up of a lipid monolayer. d. They lack nuclei and membrane-bounded organelles. - Answer ️️ -d. They lack nuclei and membrane-bounded organelles. Two examples of membra...