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Bio 102 Ch. 4

Stuff I need to know from Ch. 4 for BIO 102 at RWC

QuestionAnswer
Cell Theory 1. All Living things are composed of cell(s) 2. Cells are the smallest unit of living organisms 3. New cells come only from pre-exsisting cells by cell division.
Microscopes A magnification tool that enables researchers to study the structure and function of cells (2 types: light and electron)
Microscopy Transmission Electron Microscopy: a beal of electrons is transmitted through a biological sample Scanning Electron Microscopy: specimen is coated with metal and electrons are directed toward it to create a 3-d image
Prokaryotes no nucleus, 2 types (bacteria and archaea) have: Plasma membrane, cell wall, cytoplasm, ribosomes, appendages, nucleoid, glycocalyx Eu: have a nucleus
Metabolism the sum of the chemical reactions by which cells produce the materials and energy that are necessary to sustain life.
Catabolism the breakdown of a molecule into smaller elements
Cytoskeleton structure and function provides cell organization, shape, and structure. Created from a network of 3 different filaments: microtubules, intermediate filaments, actin filaments
motor proteins a category of cellular proteins that use ATP as a source of energy to promote movement.
Eukaryotes have a nucleus, exhibit compartmentalization,
vacuole store stuff needed by cell
Endoplasic Reticulum TRANSPORT
Golgi Apparatus PACKAGING
Plasma Membrane Boundary between cell and outside environment
Semiautonomous Organelles can function without control from DNA or the nucleus, but still need materials and energy from other parts of the cell
Mitochondria ENERGY make ATP
Chloroplasts PHOTOSYNTHESIS
granum inside of chloroplasts, stacks of thylakoids
Peroxisomes found in ALL eukaryote cells. meant to catalyze chemical reactions
Ribosomes site of protein synthesis
Created by: omish
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