Animal vs. Plant Cells
Simple Explanation
Animal and plant cells share the same basic eukaryotic structures — a nucleus, cytoplasm, cell membrane, mitochondria, and ribosomes — but plant cells add a cell wall, chloroplasts, and a large permanent vacuole, while animal cells are usually more irregular in shape.
Why Do We Need It?
Comparing the two cell types side by side is the fastest way to identify which type of cell you are looking at under a microscope, and to understand why plants and animals live so differently.
Worked Example
Identify a cell type from its features
A cell viewed under a microscope has an irregular (non-rectangular) outline and no visible cell wall or chloroplasts. Is it more likely an animal or plant cell?
Why Does This Work?
Because the cell wall, chloroplasts, and large permanent vacuole are structures unique to plant cells, their absence — combined with a more irregular outline — is strong evidence the cell is from an animal, not a plant.
Real-Life Example
Comparing cheek cells and onion cells in a school microscopy lab
A classic biology lab compares human cheek cells to onion skin cells under a microscope.
Cheek cells (animal) look round and irregular with no visible wall; onion cells (plant) appear as neat rectangular boxes with visible cell walls — a hands-on version of this comparison.
Practice
Which structure is found in BOTH animal and plant cells?
MediumCommon mistake
Assuming plant cells don't have mitochondria because they have chloroplasts — plant cells need both: chloroplasts to make food via photosynthesis, and mitochondria to release energy from that food via respiration.
Quick Review
- Both cell types share a nucleus, cytoplasm, membrane, mitochondria, and ribosomes.
- Only plant cells have a cell wall, chloroplasts, and a large permanent vacuole.
- Animal cells are usually more irregular in shape.