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Cells. Chapter 6.1 HS pg 122. Defined. Basic unit of structure and function of all living things. Cell Membrane. Surrounds cell =cell wall Alias= plasma membrane Regulates transport of molecules into and out of the cell Semi permeable Composed of phospholipid bilayer and proteins.

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cells

Cells

Chapter 6.1 HS pg 122

defined
Defined
  • Basic unit of structure and function of all living things
cell membrane
Cell Membrane
  • Surrounds cell =cell wall
  • Alias= plasma membrane
  • Regulates transport of molecules into and out of the cell
  • Semi permeable
  • Composed of phospholipid bilayer and proteins
nucleus
Nucleus
  • Most important organelle
  • Controls activity
  • Contains DNA
  • Nuclear membrane=envelopes the nucleus
  • Nucleoplasm= semi fluid that holds chromatin in place,
cytoplasm cytoskeleton
Cytoplasm/cytoskeleton
  • Cytoplasm= jelly like substance, fills area between nuclear membrane and cell membrane
  • Cytoskeleton= structure acts as support for cell, cytoplasm flows throughout, and holds organelles in place
centrioles
Centrioles
  • Two cylinder shaped organelles found near the nucleus
  • Perpendicular to each other
  • Separate from each other in mitosis
  • Spindle fibers pull away from each other and cell splits (spindle fibers attach to chromosomes)
endoplasmic reticulum
Endoplasmic Reticulum
  • Network of tubular structures
  • Serves as transport system for cell
  • Rough ER= ribosomes attached
  • Smooth=cholesterol synthesis, fat metabolism and detox of drugs
mitochondria
Mitochondria
  • Rod shaped organelle
  • Supplies cell with energy in the form of ATP
  • “power house” of the cell
golgi apparatus
Golgi Apparatus
  • Golgi Body/complex
  • Synthesizes carbs and combines them with proteins
  • Stores and packages secretions for discharge from the cell
  • Abundant in cells of gastric glands, salivary glands, pancreatic glands
lysosomes
Lysosomes
  • Spherical shaped
  • Digestive enzymes to digest protein molecules
  • Digests old worn out cells, bacteria, and foreign matter
  • If lysosome ruptures, it eats the cells proteins=cell death=nicknamed “suicide bags”
perioxisomes
Perioxisomes
  • Membranous sac
  • Contains oxidase enzymes= digest fats and detox harmful substances