Tails of phospholipids - Study guides, Class notes & Summaries

UIUC ANSC 221, Exam II Questions With Verified Answers Biological Membranes Framework of the membrane is the phospholipid bilayer Hydrophobic water fearing region, faces in Hydrophilic water living region, faces out Fluid-mosaic model membrane is considered a mosaic of lipid, protein, and carbohydrate molecules Integral/Intrinsic membrane proteins transmembrane and lipid-anchored proteins Transmembrane proteins One or more regions that are physically embedded in t...

Cell correct answers The fundamental unit of life Characterized by: movement, metabolism, reproduction and responding to stimuli Cell theory correct answers The cell is the basic unit of all living organisms Cells are not created, they arise from pre existing cells All organisms are composed of one or more cells Robert Hooke correct answers coined the term "cell" Anton van Leeuwenhoek correct answers Viewed small prokaryotes via microscope Can you create cells? correct answers N...

MCB Exam 1 Review Questions and Answers Already Passed Question: What is the central dogma of molecular biology? Answer: The central dogma of molecular biology describes the flow of genetic information from DNA to RNA to protein. Question: What are the key differences between prokaryotic and eukaryotic cells? Answer: Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and complex organelles such as mitochondria and the endoplasmic retic...

Which of the following is NOT a component of the plasma membrane? a. Phospholipids b. Cholesterol c. Integral proteins d. Peripheral proteins e. Ribonucleic acids - ANSWER E _______________ is a term that describes both the polar and nonpolar nature of phospholipids. a. amphitheaters b. ambidextrous c. amphibolic d. amphipathic e. amphibious - ANSWER D Which of the following would cause an increase in van der Wal interactions within a membrane bilayer? a. Long unsaturated fat...

Cell correct answers The fundamental unit of life Characterized by: movement, metabolism, reproduction and responding to stimuli Cell theory correct answers The cell is the basic unit of all living organisms Cells are not created, they arise from pre existing cells All organisms are composed of one or more cells Robert Hooke correct answers coined the term "cell" Anton van Leeuwenhoek correct answers Viewed small prokaryotes via microscope Can you create cells? correct answers N...

WVU BIO 101 EXAM 2 QUESTIONS AND ANSWERS 100% PASS Enzymes are actually which type of macromolecule? Proteins Characteristics of living things -Use energy - thus they metabolize proteins, lipids, and carbohydrates to release the energy stored within them What is metabolism? -All chemical reactions that occur in living organisms to maintain life -Includes breaking down molecules and building new molecules Enzyme properties 1. Specific 2. Sensitive to environmental conditons 3....

Physiology & Pathophysiology Module 1- Membrane Physiology & Action Potentials (Long) Questions And Answers (A+ Grade) 1. Explain the structure of the membrane - ANS-Cell Membranes are composed primarily of lipids and proteins. Lipids consist of phospholipids, cholesterol, glycolipids - high permeability of membranes to lipid soluble substances (CO2, fatty acids, steroid hormones). Lips are also responsible to the low permeability of water-soluble molecules (ions, glucose, amino acid...

What are sphingomyelins? - Sphingolipids where the head group is phosphocholine or phosphoethanolamine. What prevents cells from actually swelling? - It is effectively impossible for sodium to enter the cell (due to pump and lack of sodium channels). There is a high sodium ion concentration outside the cell which prevents water from entering in the cell Why would cells have a tendency to swell? - Because cytoplasm contains negatively charged proteins that cannot exit, so cells naturally ga...

BIOL 112 UPDATED Questions and CORRECT Answers What properties of phospholipids determine if they will form micelles or bilayers when mixed with water? - Whether there are one or two fatty acid tails Which statements about proteins in biological membranes are true? - Hydrophobic transmembrane regions of proteins are embedded in the fatty acid tails of the lipid bilayer

B - Cells and Organelles | Questions and Correct Answers | Latest Update 2024/2025 | 100% PASS what are the three main components in a cell membrane? phospholipids; cholesterol; proteins what is the structure of a phospholipid? glycerol backbone, two fatty acid tails, and a hydrophilic phosphate group what are the two classes of membrane proteins? integral; peripheral_____ membrane proteins are embedded in the core of the plasma membrane Integral many integral proteins are _____ pro...