Membrane fluidity - Study guides, Class notes & Summaries

Biology 1001 MUN Section 3 Questions and Answers Rated A+ **1. What is the role of the plasma membrane in a cell?** - The plasma membrane acts as the outer living layer of each cell, serving as a gatekeeper that separates the external environment from the cell's interior. **2. What does the term "amphipathic" refer to?** - It describes molecules that have both hydrophilic (water-attracting) and hydrophobic (water-repelling) components. **3. What factors influence membrane fl...

ANSC 221 Exam 2 Questions and Answers Already Passed There are three transporter types: Uniporter, Symporter/co-transporter, and Antiporter. Oxidative process of metabolism involves _________. electron transport chain carbohydrate to protein Glycoprotein ________-cartilage (GAG example) chondroitin sulfate _____ adhere cells to each other and to the ECM cell junctions ____ coordinate cellular activites in multicellular animals. Hormones Equal water and solute concentrations...

A bilayer with a short and unsaturated hydrocarbon tail has what permeability and what fluidity? - ️️High fluidity and high permeability A general function of all cellular membranes is to - ️️Regulate which materials can enter or leave the cell. A molecule that binds to the particular three-dimensional structure of a receptor site is known as a - ️️Ligand. A prokaryotic cell lacks a _____ and a _____ . - ️️nucleus; membrane-bound organelles. A protein kinase Cascade can ampli...

CBNS 101 midterm 1 exam questions & answers 2024/2025 Detergent - ANSWERSforms cone shape, makes micelles factors that increase fluidity - ANSWERShigh temp shorter fatty acid tail unsaturated tails that kink factors that decrease fluidity - ANSWERSLow temp longer fatty acid tail saturated tails that are not kinked Cholesterol - ANSWERSActs as a buffer Increases fluidity at low temps decreases fluidity at high temps orients in the bilayer such that rigid steroid rings i...

cbns 101 midterm 1 test questions & answers 2024/2025 cell membrane permeability - ANSWERSsmall nonpolar molecules/ oxygen, small polar molecules/water, no ions, no large polar molecules lipid bilayer properties - ANSWERScomposed of lipids and proteins. lipids are amphipathic making it energetically favorable to spontaneously assemble into bilayers in aqueous solutions/hydrophobic interior and hydrophilic heads interact with environment/leads to sealed rings of lipids three types of l...

There are three transporter types: : Uniporter, Symporter/co-transporter, and Antiporter. Oxidative process of metabolism involves _________. : electron transport chain carbohydrate to protein : Glycoprotein ________-cartilage (GAG example) : chondroitin sulfate _____ adhere cells to each other and to the ECM : cell junctions ____ coordinate cellular activites in multicellular animals. : Hormones 2 | P a g e Equal water and solute concentrations on either side of the membrane : Iso...

Composition of Lipid Bilayer - 50% lipids (outnumber all other molecules 50:1), proteins (50% of mass of membranes), cholesterol Plasma Membrane (Function) - Enclose Cells, Organelles 1. Defines Boundaries to regulate chemical composition and environment 2. Define malleable borders Saturated - Single Bonded Unsaturated - Double Bonded Fatty Acids - Monomers for Lipids Function of Lipids - 1. energy storage 2. cell membranes Why Do Mitochondria have a double membrane? - Prehistoric cell...

Describe the fluid-mosaic model of membrane structure. The framework of the membrane is the phospholipid bilayer, which consists of two layers of phospholipids. Also includes proteins and carbohydrates. Identify the three different types of membrane proteins. 1. Transmembrane Protein 2. Lipid-Anchored Protein 3. Peripheral Membrane Proteins Transmembrane Protein integral membrane protein that spans the entire width of a cell membrane Lipid-Anchored Proteins covalent attachment of a lipid to a...

BIOA01H3 F Life on Earth PRACTICE QUESTIONS for FINAL EXAM ACTUAL TIPS (possible questions with correct answers) new update University of Toronto, Scarborough Here are 60 Practice Questions so you can have an idea of the kind of questions that are likely to be asked on the Final Exam. 1. Which structure is common to plant and animal cells? A. chloroplast B. wall made of cellulose C. central vacuole D. mitochondrion E. centriole 2. Which of the following is true for all exergonic reacti...

A runner has depleted all the oxygen available for muscle energy. Which of the following will facilitate his continued muscle performance? - Answer- Answer: Anaerobic glycolysis What causes the rapid change in the resting membrane potential that initiates an action potential? - Answer- Answer: Sodium gates open, and sodium rushes into the cell, changing the membrane potential from negative to positive. A 12-year-old male is diagnosed with Klinefelter syndrome. His karyotype would reveal wh...