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

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BIO 1201. GREGG. EXAM 2 ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Facilitated diffusion - Answer -Passive transport of polar molecules and ions through transport proteins Diffusion - Answer -Passive transport of small and nonpolar molecules Osmosis - Answer -Passive transport of water across a selectively permeable membrane Fluid Mosaic model - Answer -Describes the plasma membrane as consisting of diverse proteins embedded in a phospholipid bilayer, creating selective permeability Phospholipids - Answer -Found in the cell membrane, creating the bilayer Cellular membranes - Answer -Fluid mosaics of lipids and proteins Peripheral proteins - Answer -Proteins bound to the surface of the membrane Integral proteins - Answer -Proteins that penetrate the hydrophobic core of the membrane Transmembrane proteins 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 - Answer -Integral proteins that span the membrane Membrane proteins - Answer -Function in transport, enzymatic activity, signal transduction, cell-cell recognition, intercellular joining, and attachment to the cytoskeleton and extracellular matrix Membrane carbohydrates - Answer -Serve as identification tags for cell-cell recognition, specifically recognized by membrane proteins of other cells Selective permeability - Answer -Property allowing only certain substances to pass through the membrane Hydrophobic molecules - Answer -Nonpolar molecules that dissolve in the lipid bilayer and cross the membrane easily Hydrophilic molecules - Answer -Polar molecules that pass slowly through the lipid bilayer and may need transport proteins for regulation Transport proteins - Answer -Transmembrane proteins allowing passage of hydrophilic substances across the membrane, facilitating diffusion by moving down the gradient Active transport - Answer -Requires energy to move substances against their concentration gradient Passive transport - Answer -Diffusion of a substance across a biological membrane, not requiring energy Hypertonic solution - Answer -Causes a cell to shrink due to higher solute concentration outside the cell Hypotonic solution 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