The video explains that all living things, from microorganisms to large animals, require energy to perform essential functions. Plants obtain energy through photosynthesis, converting sunlight, carbon dioxide, and water into sugars. Organisms that do not photosynthesize must consume other organisms to meet their energy needs. The video also discusses the importance of nutrients in food, which provide energy and support bodily processes, and the study of nutrition, which examines how the body uses food to maintain health.

Why do living organisms need energy?

• To change their color

• To create new species

• To produce light

• To perform essential functions like growth and movement

How do plants primarily obtain their energy?

• By consuming other plants

• Through photosynthesis

• By absorbing nutrients from the soil

• By eating insects

Which of the following is NOT a way organisms obtain energy?

• Breaking down nutrients

• Absorbing sunlight directly into their cells

• Consuming other organisms

• Photosynthesis

What is the main role of nutrients in food?

• To increase body temperature

• To make food taste better

• To change the color of the body

• To provide energy and support bodily processes

What is the process called by which living things obtain and break down food?

• Photosynthesis

• Digestion

• Nutrition

• Respiration