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Week 2 Anatomy

Chapter 3 Chemistry

QuestionAnswer
What are the three main parts of a cell? Plasma membrane, cytoplasm, nucleus.
What is Plasma Membrane? A selectively permeable phospholipid bilayer that controls what enters and leaves the cell.
What are the functions of the plasma membrane? Protection, communication, selective permeability, and structural support.
The __________ is the control center of the cell, containing DNA. nucleus
Define Cytoplasm The jelly-like fluid inside the cell where organelles are suspended.
What are organelles? Specialized structures within the cell that perform specific functions.
Define Mitochondria Organelles that generate ATP through cellular respiration.
What is the role of ribosomes? Protein synthesis.
Define Rough Endoplasmic Reticulum (RER) Studded with ribosomes; synthesizes and transports proteins.
Define Smooth Endoplasmic Reticulum (SER Synthesizes lipids and detoxifies chemicals.
What is the function of lysosomes? To digest and remove waste materials and damaged organelles.
The __________ provides structural support and shape to the cell and assists in movement. cytoskeleton
What is the difference between passive and active transport? Passive transport does not require energy; active transport requires ATP.
Define Diffusion Movement of molecules from high to low concentration.
Define Osmosis Diffusion of water across a selectively permeable membrane.
What is endocytosis? Process where the cell engulfs substances by enclosing them in a vesicle.
What is exocytosis? Process where vesicles fuse with the plasma membrane to release contents outside the cell.
__________ are tiny hair-like structures on the cell surface that help move substances. Cilia
Define Flagella A whip-like tail that enables cell movement.
Created by: MichisMitchell
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