Phosphatidylcholine - Study guides, Class notes & Summaries

NBME 18 Exam Questions And Answers A deficiency in what causes infantile neonatal RDS? - CORRECT ANSWER- - lethicin - aka dipalmitoyl phosphatidylcholine L/S has to be greater than 2 Patient with long history of type 1 diabetes has loose stools for 1 year. Stool shows no abnormalities. Pathophysiologic mechanism most likely for cause of diarrhea? - CORRECT ANSWER- Diabetic diarrhea - type of autonomic neuropathy - occurs usually at night, is watery and painless, and can be associate...

11-1 Which of the following phenomena will be observed if a cell's membrane is pierced? (a) the membrane reseals (b) the membrane collapses (c) a tear is formed (d) the membrane expands - CORRECT ANSWER-A 11-2 The plasma membrane serves many functions, many of which depend on the presence of specialized membrane proteins. Which of the following roles of the plasma membrane could still occur if the bilayer were lacking these proteins? (a) intercellular communication (b) selective permea...

BSCI330 Final Exam Practice Questions and Answers Which of the following would allow you to visualize the internal structure of a mitochondrion with the highest level of resolution? A: Visible light microscopy B: Confocal fluorescence microscopy C: Transmission electron microscopy D: Scanning electron microscopy - ANSWER-C: Transmission electron microscopy Oxidative metabolism of glucose includes both substrate-level phosphorylation and oxidative phosphorylation. Which of the following ...

Chapter 2 Fetal Cardiopulmonary Development Multiple Choice 1. What percentage of live births occurs before the 37-week gestation period? A. 10% B. 15% C. 12% D. 18% ANS: C 2. What measuring tool for due date estimation is effective at young gestational age as a result of size variability being minimal? A. Biparietal diameter B. Crown-rump C. Transverse diameter of the head D. Head circumference ANS: B 3. During which lung development stage do the right ...

Saturated fatty acids are different to unsaturated fatty acids because they: A. have an even number of carbon atoms B. have short hydrophobic tails C. have no C=C double bonds D. exhibit free rotation about the carbon carbon bonds in the hydrocarbon tail E. mostly have cis double bonds - C. have no C=C double bonds Which of the following statements is FALSE? A. The longer the chain length of a saturated fatty acid, the higher the melting temperature B. The difference in melting tempera...

PCB 3023 - Cell Biology Exam 2 Review Questions and Answers where can cell membranes be found? - ANSWER-1. enclosing the cell 2. enclosing the organalles why does the mitochondria has two membranes? - ANSWER-to increase the surface area inside membrane functions - ANSWER-1. define boundaries to regulate the a. chemical composition of the region they enclose b. interaction of the region they enclose with their external environment 2. define boundaries that are soft and flexible which allo...

BIOL EXAM REVIEW QUESTIONS AND ANSWERS 1. What interactions provide structure for the plasma membrane? a. Membrane proteins organise the lipids in the bilayer through interactions between amino acid side chains. b. Lipids organise the membrane proteins on the surface of the bilayer through interactions between lipid hydrocarbon tails and water. c. Hydrophobic lipids provide the basic structure of the membrane through interactions with water. d. Amphipathic lipids provide the basic structu...

BIOLOGY EXAM REVIEW Q&A 1. Based on the data below, which of the following will contain the largest percentage of phosphatidylcholine (PC)? a. The leaflet of the cell membrane facing the outside of the cell. b. The leaflet of the endoplasmic reticulum membrane facing the cytosol. c. The leaflet of the inner nuclear membrane facing the inside of the nucleus. d. The leaflet of the inner mitochondrial membrane facing the matrix. 2. Which of the following statements is correct? a. All...

BIOL 266 Final Exam 2024 Actual Questions and Answers Graded A   BIOL 266 Final Exam 2024 Actual Questions and Answers Graded A = Correct answer = We don’t have the answer Exam 1: MULTIPLE CHOICES: 1. You have isolated a mutant line of mammalian cells deficient in emerin. This mutant line is expected to be impaired in: A. Export of 40S and 60S ribosomal subunits from the nucleus B. Ribosome assembly in the nucleolus C. Transcription of some genes in certain ti...

CTBS Foundations questions and answers Rated A. What are the 5 major phospholipids? 1. Phosphotidylcholine 2. Sphingomyelin 3. Phosphotidylethanolamine 4. Phosphotidylserine 5. Phosphatidylinositol What are the outer phosphalipids? Phosphatidylcholine, sphingomyelin What are the inner phosphalipids? Phosphotidylethanolamine, Phosphotidylserine! Phosphatidylinositol How are peripheral membrane proteins anchored to the membrane? To the inner or outer leaflet via nonco...