Lab Practical
• Lab Safety
• Scientific Method
• Graphs (Dry Mix)
• pH Lab
• Carbohydrate Lab
• Microscope Lab
• Lab supplies
• Cell Lab
• Baggie lab
• Egg lab
• DNA Cut-out Lab
• Zweeble Lab
• Onion Root Tip Lab
Scientific Method
• What might be a good hypothesis?
• What is the dependent variable?
• What is the independent variable?
• DRY MIX
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pH Lab
Purpose: Measure the pH of common substances.
• What is the pH of milk?• Is lemon juice acidic or basic?• Is ammonia acidic or basic?• Acidic vs Basic
Carbohydrate Lab
Purpose: Determine whether common foods contain mono-, di-, or polysaccharides.
• What color does the substance change when iodine is added to starch?
Carbohydrate Lab
Iodine: Change from _________ to _________
Type of Carbohydrates?
Carbohydrate Lab
Benedict’s: Change from _________ to _________
Type of Carbohydrate?
Carbohydrate Lab
How does one test for disaccharides?
Microscope Lab
Purpose: Get familiar with microscope use and handling.
• Objective Lenses
• Adjustment knobs
• Functions of structures
Cells Lab
Purpose: Identify the parts of a cell using a microscope.
• What type of cell?
• What type of cell?
• Structure?
• Structure?
Baggie LabPurpose: Demonstrate
how a semi-permeable membrane operates.
• What material is inside the bag?
• Outside the bag?• What happens to the
bag?• Is the bag permeable to
starch?
Egg LabPurpose: Observe how cells react to different
environmental conditions using osmosis.
• Type of solution: Hypertonic, Hypotonic, Isotonic
• Direction of water movement
DNA Cutout Lab
Protein Synthesis/Zweeble Labs
• Transcribe DNA into mRNA
• Use mRNA codon chart to identify amino acids
Onion Root Tip LabPurpose: Identify cells in various stages of
the cell cycle.
• What is phase A?
• B?
• C?
• Put the pictures in order!
A
B
C
