Homeostasis.

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Presentation transcript:

Homeostasis

Processes that Maintain Homeostasis Photosynthesis Cellular Respiration Mitosis Passive Transport Active Transport

Photosynthesis Process of how plants, algae, and some bacteria make their own food. Takes place in chloroplasts. Water + Carbon Dioxide → Sugar + Oxygen

Cellular Respiration Process in which cells use oxygen to produce energy from their food. Used by plant, animals, and most organisms. Sugar + Oxygen → Water + Carbon Dioxide + Energy

Mitosis Division of cells. DNA divided and cell divides into two new cells.

Passive Transport Movement of particles across a cell membrane without use of energy. Diffusion: movement of molecules from high concentration to low concentrations Osmosis: diffusion of water through semi-permeable membrane

Active Transport Movements of particles against a concentration gradient. Cells need to move materials from low concentration to high concentration.

Types of Active Transport Endocytosis: cell uses energy to surround a particle and bring the particle into the cell Exocytosis: particles enclosed in cell are released

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