Phospholipid bilayer - Study guides, Class notes & Summaries

Kansas State University FNDH 620 exam 1 with 100% correct answers What are the proportions of body mass of the 4 major elements? - answerOxygen 63% Carbon 18% Hydrogen 9% Nitrogen 3% Approximately what percentage of the human body is water? - answerWater 55-65% What are the organelles? - answerStructure within the cell with a specialized function Describe the cell membrane. - answerLipid bilayer Hydrophilic phospholipid heads Hydrophobic fatty acids tails What is cholesterol's roll i...

why are membranes called phospholipid bilayers? - Answer-phospholipids have hydrophilic head and hydrophobic tail, hydrophobic face inside of cell making 2 layers what is meant by fluid mosaic? - Answer-Mosaic of proteins drifting laterally in fluid bilayer of phospholipids how are membranes adjusted for different temperatures? - Answer-membrane fluidity adjusted by changing the ratio of unsaturated to saturated fatty acids how do the relative amounts of saturated and unsaturated fats chan...

Cholesterol Ans: Only found in animal cells. Cholesterol allows the membrane to be more fluid and bends lipids together for selectivity Peripheral Protein: Ans: They're hydrophilic because they are not embedded in the membrane and act as receptor/communication functions of the cell since they are bound to the surface Glycolipids Ans: Carbs attached to lipids Glycoproteins Ans: Carla attached to proteins Intergral Proteins Ans: Connect inside of cell to the outside 2 Carrier Prote...

Biology 1001 Exam 2 (LSU-Hrincevich) Questions and Answers 100% Pass CHAPTER 5: What role do transport and channel proteins play within the fluid mosaic of a plasma membrane? They facilitate the movement of salts and sugars across the plasma membrane. CHAPTER 5: When red blood cells are placed in a hypertonic solution, what happens to the cells? The cells shrink because water exits them. CHAPTER 5: How would you best describe plasma membranes? Plasma membranes consist of a bilay...

AQA AS BIOLOGY 7401/1 Paper 1 Version: 1.0 Final *JUN* IB/M/Jun23/E8 7401/1 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 TOTAL Monday 15 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in t...

What is the magnification of an ocular lens on a microscope? - 10X What part of the microscope is the slide going to be placed on? - Stage All humans have how many pairs of chromosomes? - 23 What holds the genetic code for each person? - DNA What is DNA made of? - nucleotides The plasma membrane is made of how many phospholipid layers? - 2 (Bilayer) How is oxygen transported through blood or body? - circulatory system The mRNA strand is what to DNA strand? - Identical except U is where T ...

Phosphorus has an atomic number of 15. This tells us that... - Answer-there must be 15 protons True or False: covalent bonds are stronger than ionic and hydrogen bonds because atoms that are joined with covalent bonds share electrons - Answer-True An e- in a hydrogen atom exists in the first valence shell. The valence e- of Aluminum exist in the 3rd shell. Which valence shell e- have higher potential energy and why? - Answer-the valence e- of aluminum, bc higher e- shells have higher energy...

integral proteins - correct answer Penetrate the hydrophobic interior of the lipid bilayer. Commerce via facilitated or active. peripheral protein - correct answer A protein loosely bound to the surface of a membrane or to part of an integral protein and not embedded in the lipid bilayer. Carbohydrate group - correct answer Linked with protein or lipids and function as adhesion. Cholesterol - correct answer Steroid common in cell membranes, also in many hormones. Functions as suppor...