Cells & Living Things
These are the basic units of life.
What are cells?
This cell part contains instructions and directs cell activities.
What is the nucleus?
This system helps your body move.
What is the muscular system?
This body part helps you decide how to respond to an alarm.
What is the brain?
During a run, your heart rate does this.
What is increase?
An organism made of only one cell is called this.
What is unicellular?
This cell part controls what enters and leaves the cell.
What is the cell membrane?
This system carries oxygen and nutrients in the blood.
What is the circulatory system?
These detect stimuli such as heat, light, and sound.
What are sensory receptors?
Muscle cells need more oxygen and nutrients during exercise to release this.
What is energy?
A rock that does not have cells.
What is nonliving?
This plant cell part uses sunlight to help make food.
What are chloroplasts?
This system breaks down food so nutrients can be absorbed.
What is the digestive system?
Your body does this quickly after touching a hot surface to help prevent injury.
What is pull your hand away?
After running, your breathing and heart rate gradually move closer to these.
What are their original levels?
This tool helps scientists observe tiny structures to look for cells.
What is a microscope?
These cell parts release usable energy from food.
What are mitochondria?
Put these in order: organ, cell, organ system, tissue.
What is cell → tissue → organ → organ system?
This is what your body detects when you touch a hot pan.
What is heat?
A student runs, breathes faster, and has a faster heartbeat. These observations are examples of this.
What is evidence?
A mushroom has cells, but a rock does not. This evidence helps show which one is living.
What is a mushroom?
A cell cannot function using only one part because its different parts must do this.
What is work together?
These two systems work together to bring oxygen to muscle cells during a run.
What are the respiratory and circulatory systems?
The smell of a familiar food can remind you of something because the brain connects it to this.
What is a stored memory?
A runner's breathing and heart rate increase during exercise and decrease after resting. This shows the body does this.
What is adjust to changing needs?