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DO NOW 11/21
•Take out notebook and open to next
available page.
Cell Processes
and get ready for notes…there’s not
Cell Processes
What do cells do?
1. Cells bring in important substances and get rid of waste substances
• passive transport (diffusion or osmosis) or by active transport (using energy)
• Cell membrane controls movement
2. Cells perform complex activities
• Photosynthesis (plants only) chloroplasts make food
• Cellular respiration (both plants and animals) mitochondria release energy from
3. Cells divide to make more cells
• Reproduction:
• Asexual reproduction – mitosis
• Sexual reproduction – meiosis
• Growth and repair:
• Mitosis in multicellular organisms
Other substances and why cells need ‘em