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