BIO 1201 EXAM 2 GREGG ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

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BIO 1201 EXAM 2 GREGG ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS transport proteins - Answer -are responsible for controlling passage across the membrane fluid mosaic model - Answer -The membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids fatty acid tails - Answer -nonpolar, hydrophobic fatty acid heads - Answer -hydrophilic, polar periphial proteins - Answer -bound to the surface of the membrane integral proteins - Answer -penetrate the hydrophobic core (ones that span the membrane are transmembrane protiens How do cells recognize each other? - Answer -by binding to molecules, often containing carbohydrates, on the extracellular surface of the plasma membrane Glycolipids - Answer -Membrane carbohydrates that are covalently bonded to lipids. Hypdrophobic - Answer -molecules such as hydrocarbons that can dissolve in the lipid Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com bilayer and pass through the membrane rapidly Hydrophilic - Answer -molecules that don't cross the membrane easily (ions and polar molecules) transport proteins - Answer -allow passage of hydrophilic substances across the membrane carrier proteins - Answer -bind to molecules and change shape to shuttle them across the membrane passive transport - Answer -the diffusion of a substance across a membrane with no energy investment Diffusuion - Answer -Spreading out of particles away from each other, from an area of high concentration to an area of low concentration. (move to where space is available) concentation gradient - Answer -substances diffuse from high concentration----> low concentration Osmosis - Answer -Diffusion of water through a selectively permeable membrane Isotonic - Answer -when the concentration of two solutions is the same (no net movement) Hypertonic - Answer -cell losses water and shrivils hypertonic - Answer -cell gains water and expands Need assistance on Online classes, Exams & Assignments? Reach out for instant help!! Full Course Assistance, Plagiarism-free Essay Writing, Research Paper, Dissertation, Discussion Posts, etc…. Confidential & Secure services. Tutors are available for all subjects! Email now at: tutorjean01@gmail.com