LET REVIEW GEN. ED SCIENCE P1

1. These are living things that use sunlight, chlorophyll, water, and carbon dioxide to produce food.

• A. Autotrophs

• B. Consumers

• C. Heterotrophs

• D. Food chain

2. It is described as a lifeline of the body. It is the body’s “pick up” and delivery system.”

• A. blood

• B. nervous system

• C. circulatory system

• D. heart

3. It carries the oxygen-rich blood to the head, arms, chest, and down to the waist and the legs.

• A. heart

• B. ventricles

• C. aorta

• D. arteries

4. They are the transmitters of messages from the different parts of the body to the brain and vice versa.

• A. spinal cord

• B. neurons or nerve cellsC. brain

• C. brain

• D. arteries

5. Which part of the brain controls the following activities: breathing, blood pressure, heart rate, and alertness?

• A. brainstem

• B. hypothalamus

• C. cerebrum

• D. spinal cord

6. Refers to a sequence of organisms in a community that constitutes a feeding chain.

• A. photosynthesis

• B. ecosystem

• C. consumers

• D. food chain

7. Is a group of interacting plants, animals, and human in a particular area?

• A. ecological community

• B. environment

• C. living organism

• D. food chain

8. Excessive presence of carbon dioxide in the air, trapping heat near the earth’s surface causing a rise in temperature in the environment.

• A. El Niño

• B. Greenhouse effect

• C. Deforestation

• D. Weather disturbance

9. The Earth’s shield against the sun’s harmful radiation.

• A. Atmosphere

• B. Air

• C. Ozone layer

• D. Forest

10. The use of products containing ____ is discouraged because they contribute to the depletion of _____.

• A. Chlorofluorocarbon-solar radiation

• B. Gas-ozone layer

• C. Ozone layer-air

• D. Chlorofluorocarbon-ozone layer