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Prokaryotic cells
Cells without a nucleus (ex: bacteria, plasmids).
Eukaryotic cells
Cells with a nucleus (ex: animal cells).
Three types of cell fluid environments
Extracellular Fluid (ECF), Interstitial Fluid (IF), Intracellular Fluid (ICF).
Plasma membrane composition
Phospholipids, proteins, carbohydrates, cholesterol.
Fluid Mosaic Model
Model that describes the plasma membrane.
Selectively permeable
The membrane controls what enters and leaves, but sometimes leaks.
Three passive transport processes
Diffusion, osmosis, filtration.
Three types of endocytosis
Phagocytosis ('cell eating'), Pinocytosis ('cell drinking'), Receptor-mediated (uses clathrin).
Nucleus contents
Chromatin (DNA + histones), nucleolus, nuclear pores.
Smooth ER function
Processes lipids & carbohydrates.
Rough ER function
Protein synthesis (ribosomes attached).
Ribosome production location
In the nucleolus.
Golgi apparatus function
Packages proteins, glycoproteins, and other molecules.
Mitochondria function
ATP production via the electron transport chain.
Lysosomes function
Digest waste ('garbage disposal'), autolysis after cell death.
Three cytoskeletal components
Microfilaments (actin), Intermediate filaments, Microtubules (tubulin).
Centrioles function
Organize spindle fibers for cell division (always at 90° to each other).
Microvilli function
Increase surface area for absorption.
Cilia and flagella function
Cilia move substances across cell surfaces; flagella provide locomotion.
Interphase events
Cell grows, replicates DNA, increases organelles.
Prophase events
Chromosomes form, nuclear envelope dissolves, spindle fibers appear.
Metaphase events
Chromosomes line up along the equatorial plane.
Anaphase events
Sister chromatids are pulled to opposite poles.
Telophase events
Cleavage furrow forms, cytokinesis produces two daughter cells.
End result of mitosis
Two identical daughter cells.
End result of meiosis
Four haploid gametes (sperm or egg).