Diversity Of Cell Life
Upcoming SlideShare
Loading in...5

Diversity Of Cell Life



chapter 7 section 4 notes

chapter 7 section 4 notes



Total Views
Views on SlideShare
Embed Views



3 Embeds 577

http://tzapits.wordpress.com 558
http://www.slideshare.net 17
https://tzapits.wordpress.com 2



Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
Post Comment
Edit your comment

Diversity Of Cell Life Diversity Of Cell Life Presentation Transcript

  • Diversity of Cell Life Chapter 7 Section 4 Pp 190-193
  • All living things….
    • Composed of cell(s)
    • Same basic chemistry
    • Same organelles
    • Follow same genetic code
    • But are all living things the same?
  • NO!
    • Differences come from:
      • Ways cells are specialized to do certain jobs
      • Way cells work with other cells to make a multicellular organism
  • Unicellular
    • Make up most life on earth
    • When a cell IS the organism
    • Single-celled/ unicellular
    • Do everything living thing does:
      • Respond to stimuli
      • Grow
      • Reproduce
      • Transform energy
  • Yeast
  • Volvox aureus
  • Leptospira interrogans
  • Multicellular Organism
    • Organism made up of many cells
    • Variety
    • Depend on 2 major things about cells:
      • Communication
      • Cooperation
    • Cell Specialization
      • Process in which cells throughout an organism perform different tasks
  • Specialized Animal Cells
    • Many specializations, for example:
      • Red Blood cells (rbc):
        • Specialized to transport oxygen
        • RBC have protein that binds to oxy in the lungs are carries it all over the body
      • Muscle cells:
        • Specialized in movement
        • What oragnelle is going to be big and important in these cells?
        • Cytoskeleton
        • Lots of the protein actin and myosin
    Specialized Animal Cells
      • Liver cells:
        • Specialized in detoxification
        • Have lots of what organelle?
        • Smooth ER
    Specialized Animal Cells
      • Pancreas cells:
        • Specialized in making proteins (enzymes)
        • Makes enzyme that are needed by digestive system to break down food
        • What three organelles are pancreatic cells loaded with (if their main function is making proteins)?
        • Ribosomes. Rough ER, Golgi Apparatus
    Specialized Animal Cells
  • Specialized Plant cells
    • Lots of chemical activity all the time
    • Exchanges carbon dioxide, water vapor, oxygen, and other gases through tiny pores called…?
      • STOMATA
      • Found underside of leaves
    • Guard Cells:
      • Highly specialized cells that regulate process of gas exchange at the stomatas
      • They monitor plants internal conditions and regulate stomata accordingly
        • If plant needs gas exchange, what will happen to the stomata?
          • open
  • Levels of Organization
    • Makes it easier to describe cells in a multicellular organism
      • Cells- basic unit of living things
      • Tissues- group of similar cells that perform a specific function
      • Organs- group of tissues working together to perform a specific function
      • Organ systems- group of organs that work together to perform a specific function
      • ORGANISM
  • Osmotic Pressure
    • Pressure exerted by osmosis on the HYPERTONIC side of a semi-permeable membrane
    • Can cause serious problems for cell
      • Cell is full of sugar, salts, proteins, molecules
      • Inside of cell is Hypertonic
      • Osmotic pressure should make fresh water go…?
      • In or Out?
      • In
      • Cell will become inflated/swollen
      • Too much  cell will burst like a balloon
  • Why don’t all our cells burst?
    • What are our cells (animal) contained in?
      • Fresh water?
      • No…..blood or other fluids, which are ISOTONIC
        • The conc. Of sugars, salts, proteins and molecules in these fluids is the same as the conc. in the cell
    • Bacteria and plant cells
      • They DO come in contact with fresh water…what do they have PROTECTING them?
      • CELL WALL
        • Prevent cells from expanding even when there’s a lot of osmotic pressure
        • But, cell walls are prone to injuries when there is too much osmotic pressure
    • Which is a RBC in isotonic solution?
    • RBC in hypertonic solution?
    • RBC in hypotonic solution?
  • Study for Chapter 7 Test!!!