It Starts Small
1. What is the smallest unit of life?
Cell
2. Groups of tissue form what?
Organs
3. The muscular system’s main job is to _______.
Allow movement
4. What are the cells that make up the nervous system called?
Neurons
5. Stand and QUICK POSE: “Show with your arms how a muscle contracts.”
Students bend/flex a joint. Muscles pull on bones to move.
6. These cells are produced in your bones.
Blood cells
19. Plants have this organ that captures sunlight.
Leaf
18. The skeletal system’s main job is to _______.
Support and protect the body
17. A single oak tree is an example of what level of organization?
Organism
16. True or False:
Muscles move on their own without the nervous system.
False. Muscles need nerve signals.
7. A group of similar cells working together form what?
Tissue
20. Organs working together make up an ________.
Organ system
25. True or False
A bone is considered an organ.
True
24. All organ systems working together form what?
An organism
15. Stand up and react to a clap from the teacher. What system allowed you to react quickly?
Nervous system
8. What is the main function of a nerve cell?
To send signals through the body
21. Give one plant organ system and its function.
Root system (absorbs water) OR Shoot system (photosynthesis/support)
22. Organ that controls the body by sending electrical signals
Brain
23. If a plant’s leaves are damaged, what will happen to the whole organism?
It can’t do photosynthesis well; the plant becomes weak or dies
14. Act It Out: “Show a real-life situation where your muscles, bones, AND nervous system work together.”
Examples: catching a ball, jumping, writing, reacting to a sound.
9. What type of cell has chloroplasts?
Hint: Chloroplasts convert light energy into chemical energy.
Plant cell
10. These two organ systems helps you move and stay upright.
Muscular and skeletal system
11. Why is the brain called the “control center”?
It interprets all signals and decides how the body responds
12. List the five levels of organization from smallest to largest.
Cell → Tissue → Organ → Organ System → Organism
13. Silent Challenge: “Without talking, act out the function of ONE organ system and let your group guess which system it is.”
Examples: pretend running (muscular), deep breathing (respiratory), thinking pose (nervous), etc.