Cell Biology Introduction to cells
Learning Intentions Using a microscope, I have developed my understanding of the structure and variety of cells and their function. Success criteria I can state which organelles are present in typical plant and animal cells I can recognise and state the function of the cell wall, chloroplasts, cell membrane, vacuole, nucleus and cytoplasm
Activity One Glow video 1 what is a cell? Watch the video Bill Nye Cells closely Write down three facts about cells
Activity One Complete question one of your summary booklet What is the name given to the basic units of which all living things are made? Cells
Animal and Plant Cells
Activity One Label the diagram of an animal cell Nucleus Cytoplasm Cell membrane Label the diagram of a plant cell Nucleus Cytoplasm Cell membrane Chloroplast Vacuole Cell wall
Animal Cell Cytoplasm Cell membrane Nucleus
Plant Cell Vacuole Cell Wall Cell Membrane Chloroplast Cytoplasm Nucleus
Name of Part Nucleus Cytoplasm Cell membrane Cell wall Chloroplast Vacuole Is it present in plant cells? Is it present in animal cells? What is the function of this structure? Yes Yes Controls cell activities Yes Yes Where chemical reactions occur Yes Yes Controls what enters and exits the cell Yes No Gives the cell shape and support Some No Where food is produced by photosynthesis Yes No Contains sap
Learning Intentions Using a microscope, I have developed my understanding of the structure and variety of cells and their function. Success criteria I can explain why cells are stained to be viewed under a microscope
Activity Two Watch the video How to Correctly Use a Microscope - YouTube Choose one or more of the tissues below to examine under the microscope. Cheek epithelium Onion epidermis Rhubarb /red onion epidermis Elodea Yeast bacteria (bio-slides)
Collect Microscope Microscope slides, 1 per specimen Cover slips, 1 per specimen Distilled water Teat pipettes Forceps Stains Cotton wool bud (1 per specimen) Activity Two
Activity Two Method Put a drop of Methylene blue stain on a slide. Take a cotton bud and place it against the inside of your mouth. Remove from mouth Dip the end of the cotton bud into the stain and mix Place a cover slip on the drop of stain, lowering it gently using the cotton bud. Observe your cells under a microscope. Using a similar procedure make slides of different cells. Safety Cautions BE CAREFUL METHYLENE BLUE CAN STAIN CLOTHES!! PLACE ALL COTTON BUDS IN WASTE BEAKER. DO NOT HANDLE ANY COTTON BUDS OR SLIDES OTHER THAN YOUR OWN!! SLIDES ARE MADE FROM THIN GLASS. TAKE CARE WHEN HANDLING
Making a plant cell slide
Elodea
Cheek cells
Red onion cells Yeast cells
Onion Cell
Activity Two Find out the average cell length and breadth Average cell length 5 cells across 2mm 2/5 = 0.4mm Average cell breadth 10 cells across 2mm 2/10 = 0.2mm 2mm
Activity Two Complete question two of your summary booklet Explain why animal and plant cells should be stained before examining them with a microscope Because the stain allows the parts of the cell to be seen more clearly
Learning intentions I can state why specialised cells have a different shapes Success Criteria I can describe the structure of red blood cells, nerve cells sperm cells and root hair cells I can explain how each are adapted to their function
Activity Four Watch the video Types of cells Complete the sentence Specialised cells have a certain shape suited to their. function
Specialised cells
Specialised cells
leaf
Self Evaluation I can state which organelles are present in typical plant and animal cells I can recognise and state the function of the cell wall, chloroplasts, cell membrane, vacuole, nucleus and cytoplasm I can state why cells are stained to be viewed under a microscope I can state why specialised cells have a different shapes