Plant/Animal Cells and Systems
- 1. According to the cell theory, cells are the _____.
A) basic units of life
B) largest parts of the body
C) smallest particles on Earth
D) same in plants and animals
- 2. A substance called glucose provides energy for _____.
A) large animals only
B) all living things
C) animals only
D) plants only
- 3. The skin and the heart are two kinds of
A) cells
B) organ systems
C) tissues
D) organs
- 4. Proteins are assembled at organelles called _____.
A) chloroplasts
B) mitochondria
C) ribosomes
D) vacuoles
- 5. People rely on photosynthesis in plants for food and ____.
A) carbon dioxide
B) chlorophyll
C) oxygen
D) minerals
- 6. Vascular tissues are important for the _____.
A) transport of materials
B) opening of the stomata
C) diffusion of water
D) absorption of energy
- 7. To make food, plants use energy from sunlight to combine water and _____.
A) sugar
B) oxygen
C) minerals
D) carbon dioxide
- 8. A plant cell in a nonvascular plant gets water from _____.
A) diffusion
B) cohesion
C) root pressure
D) gravity
- 9. How many chambers are in the human heart _____.
A) 4
B) 5
C) 3
D) 2
- 10. In the lungs, gas exchange occurs in tiny air sacs called _____.
A) trachea
B) alveoli
C) villi
D) bronchi
- 11. Saliva works to break down starch into_____.
A) proteins
B) sugars
C) vitamins
D) fats
- 12. Where are your kidneys located?
A) behind the stomach
B) next to the liver
C) near the middle of the back
D) between the heart and lungs
- 13. What is the main purpose of the Circulatory System?
- 14. What is the main purpose of the Respiratory System?
- 15. What is the main purpose of the Digestive System?
- 16. What is the main purpose of the Excretory System?
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