Lab 4 Flashcards
What is the Scientific Method?
The approach to research involving observation, hypothesis, experimentation, and conclusion.
What are Experimental Protocols?
Procedures that ensure consistency and reproducibility in experiments, minimizing variability and bias.
What are controls in experiments?
Essential elements for comparison in experiments. A positive control shows a change, while a negative control shows no change.
What are reducing sugars?
Sugars with free aldehyde or ketone groups that can be identified by a color change in the Benedict’s test.
What is Benedict’s Test?
A chemical test that identifies reducing sugars by producing a color change when heated with Benedict’s solution.
Positive Result: Brown/red color and precipitate formation.
What is Continuous Data?
Data that can take any value within a range and is often measured.
What is Categorical Data?
Data that is divided into distinct categories or groups.
What is the Yeast Cellular Respiration Experiment?
The yeast respiration with different sugars. The sugar is acting as the energy source
What is the Spinach Photosynthesis Experiment?
The photosynthetic rate of spinach when using four different carbon dioxide/light treatments
What sugars does the cellular respiration experiment use?
Glucose, Sucrose, Lactose, and Lactose+Lactase
What is the cellular respiration experiment measuring?
The amount of CO2 being produced
How do you calculate respiration rate?
Final CO2 volume - Initial CO2 volume (mL) /Time (minutes)
What are you observing during the Photosynthesis experiment?
How many spinach leaves are floating
What causes the leaves to float?
Photosynthesis
The production of oxygen
How is the photosynthetic rate calculated?
Proportion of leaves floating/Time (minutes)
