Studied by 6 people
Iodine Solution
Used to stain plant cells (onion cells) for better visualization of cell structures.
Methylene Blue Solution
Utilized to stain animal cells (cheek cells) to enhance the visibility of cell structures.
Cover Slip Technique
Essential to prevent air bubbles that can obstruct the view of cells under the microscope.
Objective Lenses
Begin with low power (10X) for general observation, then switch to high power (40X) for detailed examination.
Labeled Drawings
Include all visible cell structures like cytoplasm, cell membrane, nucleus, and cell wall in the diagrams.
Energy Content of Food
Measure the energy content by heating and recording the water temperature change.
Controlled Variables
Maintain consistent water volume and fixed tilting angle for accurate results.
Sources of Error
Heat loss and incomplete combustion can affect the precision of energy content measurements.
Enzymes
Investigate the effect of temperature on enzyme activity using amylase and starch solutions.
Rate Calculation
Calculate the rate of enzyme reaction as 1 divided by the time taken for the iodine to remain brown.
Photosynthesis
Study the impact of light on photosynthesis by measuring oxygen bubble production in pondweed.
Transpiration
Explore factors affecting transpiration rates in plants using a potometer and varying environmental conditions.
