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7302003
Plant Organelles
Description
A level Biology (Module 2) Mind Map on Plant Organelles, created by Emma Lloyd on 29/12/2016.
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biology
module 2
a level
Mind Map by
Emma Lloyd
, updated more than 1 year ago
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Created by
Emma Lloyd
almost 8 years ago
20
2
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Resource summary
Plant Organelles
Cellulose Cell Wall
Made of Cellulose
Freely permeable to substances
Give plant cells their shape as they keep it rigid
Play a role in plant cell defence as they can detect pathogens and defend against them
Vacuoles
Membrane lined sacs in the cytoplasm containing cell sap
Play an important role in keeping the cell turgid as, when they're full of cell sap, they push against the cell walls
Has a membrane known as the tonoplast
The tonoplast is selectively permeable so some small molecules can pass through
Chloroplasts
Organelle responsible for photosynthesis
Found in the green parts of plants such as stems and leafs
Have a double membrane similar to mitochondria
The fluid inside the chloroplast is the stroma
Internal membranes form flattened sacs known as thylakoids
Stack together to form Grana
Grana contains light-sensitive pigments called chlorophyll pigments
Contain DNA and and ribosomes so can create their own proteins
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