Monday, October 3, 2011

Blog For Friday, 9/30/11

On Friday we:

  • Took cell notes on the world of cells

The Homework:

  • Cell Doctor(33-35)

  • EC: Create your own cell doctor with answers on the back

The World Of Cells

  • All living things are made up of cells

  • New cells are produced from existing cells

  • Basic unit of structure

We See Cells With Microscopes

  • Light microscopes-0.2 micrometers

  • Electron microscope-0.2 nanometers

  • 2 Types of electron microscopes-scanning(for the surface) and Transmission(for internal)

Prokaryotic vs. Eukaryotic

  • Bacteria and archea

  • Pro=Before

  • Krayon=kernel(nucleus)

  • Plants, Protists, Animal, Fungi

  • Eu=true
Plant Cells and Animal Cells

  • Both have membranes, nucleus, cytoplasm

  • Plant cells are squared (square morphology) and have chloroplast and a cell wall

  • Animal cells have centrioles and are rounded(round morphology)

Cell Organelles

Organelles-little organs, struture with a specialized functionwithin a cell


  • Nuclear envelope-double membrane with pores

  • Materials pass through pores

  • DNA is found in the nucleus in the form of chromatin

  • Nucleolus is the site of ribosome prodution


  • Freely in the cytoplasm or on the rough endoplasmic reticulum

  • Responsible for assisting in protein synthesis, makes enzymes and proteins

  • Ribosomes on the RER are responsible for making the proteins used in membranes and ones that will be secreted by the cell

Rough Endoplasmic Reticulum

  • Produces proteins

  • products are moved to other locations by transport vesicle

Smooth Endoplasmic Reticulum

  • Synthesizes lipids

  • Cells in liver detoxify drugs and poisons in blood

  • Can lead to tolerance of the drug

Golgi Apparatus

  • Shipping Center

  • Works with ER and finished, stores, and distributes chemical products of the cell


  • Lysosomes=Breakdown Body

  • A membrane enclosed sac of digestive enzymes

  • safely allows material to be digested

  • Fuses with vacuoles to digest food

  • Destroy harmful bacteria

  • REcycles damaged organelles

  • Tay Sachs disease


  • Multiple sizes and functions

  • Food Vacoule

  • Contractile Vacoule

  • Stores organic nutrients. Absorb water


  • Organelles in plants and protists that perform photosynthesis

  • Converts sunlight to energy

  • Stroma-thick fluid inside

  • Grana-in stroma, network of tubes and disks,traps sun


  • Cellular respiration

  • Sugars to ATP

  • ATP=energy=work

  • Inner membrane has multiple foldings called cristae


  • Cytoskeleton-network of fibers extending throughout the cytoplasm

  • Support and shapes the cell

  • Muscles for movement rearrangement of cytoskeleton causes the cell to move

Microfilaments, Intermediate filaments, Microtubles

  • Solid Rods copmosed of actin

  • Shapes and moves the cell

  • Actin works with other fibers

  • Ropelike fiberous proteins

  • Bearing tensions

  • Anchors Organelles

  • Straight, hollow tubes called tubulins

  • Shapes, tracks for organelles to move, Guide movements of chromosomes during cell division, movement of cilia and flagella


  • Shorter, more numerous

  • Propel protists

  • can be damaged from smoking


  • Propel sperm, other animals and protists

Microtubule Structures

  • Forms a 9+2 Arrangement

  • 9 microtubules doublets form a ring and surround a centeral pair of micro tubules

  • To move cilia or flagella, motor protein called dyneins grab onto microtubule

Thank you for reading my blog, sorry it is late, I was confused over the weekend. Sorry there were no pictures, they didn't work. It would just mess up the formatting.



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