Feeling confused and overwhelmed when facing Biology 10 practical exercises, especially Lesson 10? Don’t worry, let “HỌC LÀM” be your guide and explore hands-on secrets to confidently conquer this challenge!
Why You Should Learn How to Do Experiments
Practical exercises are key to unlocking knowledge and sparking a love for learning. It helps you:
- Understand theory in depth: Dry theory becomes vivid and easier to understand when applied in practice.
- Develop skills: Practice helps you develop observation, analysis, recording, data processing skills – essential skills for studying and research.
- Practice is your “secret weapon” to score points: Knowing how to do experiments not only helps you understand the lesson better but also makes you more confident when presenting practical work.
Biology 10 Lesson 10 Practical Exercises – A Step-by-Step Guide for Students
Experiment 1: Investigating Factors Affecting Photosynthesis Rate
Objective: To observe the relationship between light intensity, CO2 concentration, and temperature with the rate of photosynthesis.
Materials:
- Green leaves, test tubes, beakers, water bottles, flashlight, CO2 solution, alkaline solution, thermometer.
Procedure:
- Divide into practice groups, each group performs 3 experiments:
- Experiment 1: Varying light intensity.
- Experiment 2: Varying CO2 concentration.
- Experiment 3: Varying temperature.
- Use green leaves for the experiments.
- Use a thermometer, flashlight, CO2 solution, alkaline solution… to create different experimental conditions.
- Observe, record, and compare the results of the 3 experiments.
Results:
- The experimental results will show that the rate of photosynthesis depends on the following factors:
- Light intensity: The stronger the light intensity, the faster the rate of photosynthesis.
- CO2 concentration: The higher the CO2 concentration, the faster the rate of photosynthesis.
- Temperature: The rate of photosynthesis will gradually increase with temperature, but only within a suitable temperature range. If the temperature is too high or too low, the rate of photosynthesis will decrease.
Notes:
- Follow laboratory safety regulations.
- Conduct experiments with caution and accuracy.
- Record results fully and scientifically.
Experiment 2: Determining the Role of Chlorophyll in Photosynthesis
Objective: To prove that chlorophyll is a necessary factor for photosynthesis.
Materials:
- Green leaves, 90-degree alcohol, test tubes, beakers, flashlight, alkaline solution, thermometer.
Procedure:
- Use 90-degree alcohol to extract chlorophyll from green leaves.
- Conduct an experiment comparing the rate of photosynthesis of normal green leaves and green leaves with chlorophyll removed.
- Observe, record, and compare the results.
Results:
- The experimental results will show that normal green leaves have a higher photosynthetic rate than green leaves with chlorophyll removed.
Notes:
- Follow laboratory safety regulations.
- Conduct experiments with caution and accuracy.
- Record results fully and scientifically.
“Secrets” From Biology Experts
“The secret to learning Biology effectively is to practice regularly. Practice helps you understand the lesson better, remember longer, and be more confident when taking tests.” – Professor Nguyen Van A, Hanoi Medical University.
“Practice not only helps students understand the lesson but also helps students develop observation, analysis, and problem-solving skills.” – Teacher Le Van B, Hanoi – Amsterdam High School for the Gifted.
“The Magic” of Biology
- Chlorophyll: Chlorophyll is the “magic” of green plants, helping them absorb sunlight energy to synthesize organic matter.
- Photosynthesis: Photosynthesis is the “spell” that helps green plants create energy for themselves and for the whole world.
Important Notes When Conducting Experiments:
- Follow laboratory safety regulations.
- Conduct experiments with caution and accuracy.
- Record results fully and scientifically.
Beyond Biology 10 Lesson 10 Practical Exercises, What Else Do You Want To Explore?
“HỌC LÀM” is always with you on your journey to conquer knowledge!