This organelle is only found in plant cells and provides a rigid, box-like shape.
Cell wall
This system transports oxygen, glucose, and nutrients throughout the body.
Circulatory System
This system works with the skeletal system to allow movement by flexing and pulling on bones.
Muscular System
The smallest unit of life.
Cells
This type of memory is involved when you remember something for only a few seconds or minutes.
Short-term memory
This organelle acts as the cell's "powerhouse," converting nutrients into energy.
Mitochondria
Name the system that breaks down food so the body can absorb nutrients.
Digestive System
The respiratory system provides this molecule, which is needed to release energy from glucose.
Oxygen
Groups of similar cells working together to perform a specific function.
Tissue
This is the type of cell that does have a nucleus and organelles.
Eukaryote
This is the jelly-like substance inside a cell that holds organelles in place.
Cytoplasm
The body system responsible for controlling movement, memory, and responses to stimuli.
Nervous System
Cells use oxygen to release energy from this molecule, which comes from carbohydrates.
Glucose
In multicellular organisms, these levels follow this order: cell -> tissue -> ____ -> organ system.
This is the type of cell without a nucleus or organelles.
Prokaryote
This organelle, found in plant cells, helps produce food using sunlight.
Chloroplast
This system provides structure and protects organs, like the heart and lungs.
A group of organs that work together to perform complex functions, like digestion, is called this.
Organ system
The type of organism made up of just one cell.
Unicellular
These cells sense, move muscles, and send messages to and from the brain.
Nerve cells
The brain of the cell, storing information and controlling cell activities.
Nucleus
This system allows the body to take in oxygen, which is needed for energy release in cells.
Respiratory System
What are the two main organs of the nervous system?
The brain and spinal cord
The term for an organism with many cells, which have specialized functions.
Multicellular
Any change in the body or outside environment: a sight, sound, smell, taste, or touch.
Stimulus