Biology: Cells

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MRS GREN (incomplete)

INCOMPLETE!

MRS GREN stands for Movement, Respiration, Sensitivity, Growth, Reproductiin , Excretion, and Nutrients.

They are all Life Processes.

Movement - A change of position needed to respond to the surroundings.

Respiration - The process of releasing energy in cells from food or stored chemicals in cells

Sensitivity -

Growth -

Reproduction -

Excretion - The removal of waste products from the organism

Nutrition - Taking in energy, feeding

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Plant and Animal Cells

All cells, except for Red Blood cells, have a nucleus. All cells have cytoplasm, and most have a cell membrane. Most plant cells have chloroplasts, but some - like onion cells - that are undergound, don't. They also have a cell wall.They have a vacuole, and a vacuole membrane.

Nucleus - It's like the brain of the cell, it controls what the cell does and how it moves. Where it can be found: Plant and animal cells.

Cytoplasm - Cytoplasm helps the organelles within a cell move freely and safely around. Where it can be found: Plant and animal cells

Cell membrane - It controls what goes in and out of the cell. Where it can be found: Plant and animal cells

Chloroplasts - an organelle where photosynthesis takes place. Where it can be found: Plant cells.

Vacuole (permanent central vacuole) - Controls the size of the cell and contains sap. Where it can be found: Plant cells

Cell wall - Protects the cell. Where it can be found: Plant cells.

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