Lesson 2.1 - Photosynthesis and Cellular Respiration

All living things need energy.  The energy that cells need to perform their functions must be in certain forms.  Your muscle cells cannot use the energy stored in wood or gasoline.  Do you recall what form of energy your cells require? 

Read Photosynthesis and Cellular Respiration on page 183. Then, respond to the following questions.

Question 1. Why do living things need energy?

Question 2. What is the name of the process plants use to make their own food?

Question 3. Plants produce their own food.  In what form is this food stored? 

Question 4. What is the name of the process by which plant and animal cells obtain the energy from glucose?

Question 5. What three things are required for a plant to produce glucose?

Question 6. What else is produced in photosynthesis in addition to glucose?

 

Check your answers with those that follow.

 

 

 

 

 

 

 

 

 

 

 

 

Answers to Questions:

Question 1. Why do living things need energy?

Living things need energy to grow and reproduce.

Question 2. What is the name of the process that plants use to make their own food?

Plants make their own food in a process called photosynthesis.

Question 3. Plants produce their own food.  In what form is this food stored? 

The food that plants make is stored in glucose, a simple sugar.

Question 4. What is the name of the process by which plant and animal cells obtain the energy from glucose?

Plant and animal cells convert the glucose to useful energy in a process called cellular respiration.

Question 5. What three things are required for a plant to produce glucose?

Plants require carbon dioxide, water, and energy from sunlight to produce glucose.

Question 6. What else is produced in photosynthesis in addition to glucose?

Oxygen is also produced in photosynthesis.

 


Go to the next page to continue Lesson 2.