Cells and Cell Structure Flashcards
Grade 6 · Science · Flashcards
Review key vocabulary and concepts about cells and their organelles.
Flashcards
- Cell
- The smallest unit of life; the basic structural and functional unit of all organisms.
- Cell theory
- The scientific theory stating all living things are made of cells, the cell is the basic unit of life, and all cells come from existing cells.
- Prokaryote
- A single-celled organism with no membrane-bound nucleus (e.g., bacteria).
- Eukaryote
- An organism whose cells contain a membrane-bound nucleus (e.g., plants, animals, fungi).
- Nucleus
- The organelle that contains the cell's DNA and controls cell activities.
- Cell membrane
- A thin, flexible lipid bilayer surrounding all cells; controls what enters and exits.
- Cell wall
- A rigid structure outside the cell membrane found in plant cells; provides support and protection.
- Mitochondria
- Organelle that produces ATP energy through cellular respiration; the powerhouse of the cell.
- Chloroplast
- Organelle in plant cells that uses sunlight to make glucose through photosynthesis.
- Vacuole
- Storage organelle; large central vacuole in plant cells stores water and helps maintain shape.
- Cytoplasm
- The jelly-like fluid that fills the cell and suspends the organelles.
- Organelle
- A specialized structure inside a cell that carries out a specific function, like an organ in a body.
- Ribosome
- Tiny organelle that builds proteins using instructions from DNA.
- Endoplasmic reticulum
- A network of membranes inside the cell that helps transport materials and make proteins or lipids.
- Centriole
- Organelle found in animal cells that helps organize cell division.
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