chapter 3: plant and animal cells by mr. a. rogan science first year
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Chapter 3: Plant and Animal Cells
By
Mr. A. Rogan
Science First Year
Chapter 3: Plant and Animal CellsAll plants
and animals are made of cells
Chapter 3: Plant and Animal CellsCells are like
microscopic versions of the bricks in a wall
Chapter 3: Plant and Animal Cells Millions of
cells fit neatly together to form a plant or animal structure
Chapter 3: Plant and Animal Cells
Chapter 3: Plant and Animal Cells
Cell Membrane: Gives shape and controls what enters and leaves the cell.
Chapter 3: Plant and Animal Cells
Nucleus: Controls the activities of the cell
Chapter 3: Plant and Animal CellsCytoplasm: A jelly-like substance containing 90% water and dissolved proteins and vitamins.
Chapter 3: Plant and Animal Cells
Small Vacuoles: Stores food
Chapter 3: Plant and Animal Cells
Chapter 3: Plant and Animal Cells
Cell Wall: Gives extra strength and support
Chapter 3: Plant and Animal CellsLarge Vacuole: Stores Food.
Chloroplast: Contains chlorophyll which is necessary for making food.
Chapter 3: Plant and Animal CellsDifferences Between Plant
and Animal Cells:Plant cells have a cell wall.A plant cell has one large
vacuole, animal have many small vacuoles.
Chapter 3: Plant and Animal CellsPlant cells contain
chloroplasts, animals do not.Animal cells are roundish,
plants are more square.
Chapter 3: Plant and Animal Cells
Microscopes
2 Main Types:
Chapter 3: Plant and Animal Cells
Compound: Magnifies x40 – x600
Electron: Magnifies x500,000
Chapter 3: Plant and Animal Cells Microscope
Parts: Eyepiece. Lens. Coarse
Adjustment. Fine Adjustment.
Chapter 3: Plant and Animal CellsSlide.StageDiaphragm.LightBase
Chapter 3: Plant and Animal CellsAnton Van Leeuwenhoek:BusinessmanHobby was making
microscopes.Discovered bacteria and
protozoa.
Chapter 3: Plant and Animal CellsUsing
Microscopes:Wipe LensTurn on LightPut slide on
stage
Chapter 3: Plant and Animal CellsUse Low power LensLook through eyepiece
and bring into viewRepeat for medium
power.
Chapter 3: Plant and Animal CellsTo Examine Plant Cells:Peel off an extremely thin
slice of the inside of an onion.
Put 1 drop of iodine stain onto a glass slide.
Chapter 3: Plant and Animal Cells To Examine Plant Cells: (contd). Without creases/folds place the
onion skin into the iodine – lower a cover-slip onto the iodine.
Examine under low power of microscope – then medium power
Chapter 3: Plant and Animal CellsCells and
Tissues:Not all animal
cells are the same
Not all plant cells are the same.
Chapter 3: Plant and Animal Cells
The Shape and size of cells depends on the work they have to do
Chapter 3: Plant and Animal Cells Examples of
Cells: Red Blood Cell Nerve Cell White Blood Cell Muscle Cell Windpipe Cells
Chapter 3: Plant and Animal Cells
Chapter 3: Plant and Animal Cells
Chapter 3: Plant and Animal Cells
Chapter 3: Plant and Animal CellsTissues:Groups of similar cells with a
special function form a tissue. E.g. Muscle, blood, bone, skin.
Chapter 3: Plant and Animal Cells Human Tissues: Nervous Tissue Bone Tissue Muscle Tissue Skin Tissue Blood Tissue
Chapter 3: Plant and Animal Cells Plant Tissues: Photosynthetic
Tissue Storage Tissue Growing Tissue Transport
Tissue
Chapter 3: Plant and Animal Cells Organs: Several tissues
grouped together form an organ.
Structure with a specific job to do.
Chapter 3: Plant and Animal Cells Examples of
Organs: Heart Kidney Stomach Brain
Chapter 3: Plant and Animal Cells Summary:
Cells – Tissues – Organs – Systems.
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