1. The Processes of the Cell

2. Essential Question: What processes are necessary for the survival of a cell, tissue, organ, and organ system?
Standard:
Instructional Approach(s): The teacher should introduce the essential question and the standard that aligns to the essential question.

3. Activating Strategy: Watch the time lapse video and answer the questions.
What were your observations?
In order for the changes you observed to occur, what has to happen to the cells in your body?
Instructional Approach(s): The teacher should present the information on the slide. You may want to speed through some of the video to get to the end. It will not take long for the students to get the point of the video.

4. Your cells are constantly working to perform many activities such as getting food, removing wastes, growing, reproducing, and making new materials.
What do your cells need in order to conduct these necessary activities?
Instructional Approach(s): The teacher should present the information on the slide. The teacher should question students until they can come up with the concept of energy. You may need to ask why they eat to help get to energy. However, if after a minute or two students have still not come up with an answer, tell them energy and move to the next slides.

5. To stay alive, cells need a constant supply of energy
To stay alive, cells need a constant supply of energy. Animal cells get energy from food, while plant cells get energy from sunlight.
Instructional Approach(s): Give each student a Cell Processes Foldable to use during the lesson to record important information. *Note: this lesson includes vocabulary that is not directly listed in the state standards; however, supplemental state documents identify these processes as necessary for cells to get food, remove waste, grow, reproduce, and make needed materials. Throughout the lesson, stress these aspects not all of the formal names of the processes. All of them are necessary to cells to conduct all of their functions. 5

6. All cells need chemical energy
All cells need chemical energy. Chemical energy is stored in the bonds between the atoms of every molecule.
A major source of chemical energy for most cells is stored in a sugar molecule called glucose.
Instructional Approach(s): The teacher should present the information on the slide. Students do not have to write down the definition of chemical energy. However, students will be applying the concepts throughout the lesson.

7. Photosynthesis
Instructional Approach(s): Give each student a Cell Processes Foldable to use during the lesson to record important information. *Note: this lesson includes vocabulary that is not directly listed in the state standards; however, supplemental state documents identify these processes as necessary for cells to get food, remove waste, grow, reproduce, and make needed materials. Throughout the lesson, stress these aspects not all of the formal names of the processes. All of them are necessary to cells to conduct all of their functions.

8. Plant cells make their own food through the process of photosynthesis.
In this process, plant cells take in light energy and change it into chemical energy in the form of glucose (food). Photosynthesis occurs in the chloroplasts.
Instructional Approach(s): The teacher should present the information on the slide while the students record the important information for photosynthesis on their foldable.

9. What do plants need to survive?
Instructional Approach(s): The teacher should pose the question to the students. Give a minute or less to gather student responses. Students should be able to already come up with sunlight and water. They may even come up with carbon dioxide. Plants need these substances for Photosynthesis.

10. So, why are plants so important to us?
Photosynthesis Sunlight + Water + Carbon Dioxide = C6H12O6 (Glucose) and Oxygen
So, why are plants so important to us?
Instructional Approach(s): The teacher should present the information on the slide. Students are not expected to know the terms reactants and products, but it is helpful for students to know what is needed to conduct photosynthesis and what made through the process of photosynthesis. Try to focus on the overall process and how it will link to cellular respiration and the needs of living organisms.

11. AN OVERVIEW OF PHOTOSYNTHESIS
Photosynthesis is the process by which autotrophic organisms use light energy to make sugar and oxygen gas from carbon dioxide and water
Carbon dioxide
Water
Glucose
Oxygen gas
PHOTOSYNTHESIS

12. PHOTOSYNTHESIS 6CO2 + 6H2O C6H12O6 + 6O2 Sunlight provides ENERGY
Carbon Dioxide Water produces Glucose Oxygen

13. Where do animal cells get their chemical energy?
Let’s Review:
Plant cells make their own food by changing light energy into chemical energy (sugar/glucose) through the process of Photosynthesis which occurs in the Chloroplasts.
Instructional Approach(s): The teacher should present the information on the slide. Give students a chance to briefly response to the question “where do animal cells get their chemical energy?” Students should hopefully indicate that animal cells get their energy from the food they eat. You may need to remind students that our body is made up of animal cells. This may make answering the question a little easier. Their responses should lead into the next slide.
Where do animal cells get their chemical energy?

14. Once food is obtained in animal cells and made in plant cells, it must be broken down to release the chemical energy.
This process is called Cellular Respiration. Cellular respiration occurs in the Mitochondria.
Instructional Approach(s): The teacher should present the information on the slide. The students should record the important information about cellular respiration on their foldable. Make sure students understand that cellular respiration occurs in both plant and animal cells.

15. Foldable: Photosynthesis

17. WHY ARE PLANTS GREEN? Plant Cells have Green Chloroplasts
The chloroplast contains pigments that helps with the process of photosynthesis.

18. THE COLOR OF LIGHT SEEN IS THE COLOR NOT ABSORBED
Chloroplasts absorb light energy and convert it to Glucose/sugars
What color(s) is not absorbed in most plants?
What colors are not absorbed during the Fall time?
Reflected
light
Light
Absorbed
light
Transmitted
light
Chloroplast

23. Photosynthesis occurs in chloroplasts
In most plants, photosynthesis occurs primarily in the leaves, in the chloroplasts
Chlorophyll is the pigment that captures light for photosynthesis

24. Chloroplast Pigments Chloroplasts contain several pigments
Chlorophyll a – Light Green
Chlorophyll b – Dark Green
Carotenoids - Orange
Xanthophyll - Yellow
Figure 7.7

25. Chlorophyll

26. Different pigments absorb light differently