Cell structure and processes

Phenomexx
Mind Map by Phenomexx, updated more than 1 year ago
Phenomexx
Created by Phenomexx almost 5 years ago
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Mind Map on Cell structure and processes, created by Phenomexx on 10/04/2015.

Resource summary

Cell structure and processes
1 Transport across cells
1.1 Passive processes (do not require energy)
1.1.1 Diffusion
1.1.1.1 Net movement of molecules of a substance from a region of high concentration to a region of low concentration until equilibrium is achieved (only for liquids/gas)
1.1.1.1.1 Concentration gradient --> difference in concentration
1.1.1.1.2 Moving down/along the concentration gradient --> high con. to low con.
1.1.1.1.3 Moving against the concentration gradient is not in the lower sec. syllabus
1.1.1.1.4 Example: A hidden durian is brought into the classroom (the durian smell would diffuse until the whole classroom smells evenly of durian)
1.1.2 Osmosis
1.1.2.1 Net movement of water molecules in a liquid body from a region of higher water potential through a partially permeable membrane to a region of lower water potential until equilibrium is achieved
1.1.2.1.1 Water potential --> % of water a substance contains
1.1.2.1.1.1 Hypotonic to ___ --> solution has a higher water potential
1.1.2.1.1.2 Isotonic to ___ --> solution has an equal water potential
1.1.2.1.1.3 Hypertonic to ___ --> solution has a lower water potential
1.1.2.1.1.4 Symbol for <water potential> --> Ψ
1.2 Active processes (require energy)
1.2.1 Active transport
2 Structure of cells
2.1 Eukaryotic (membrane bound organelles)
2.1.1 Animal cell
2.1.2 Plant cell
2.2 Prokaryotic (non-membrane bound organelles)
2.2.1 Root hair cell
2.2.2 Red blood cell (erythrocyte)
3 Things to know
3.1 Nucleus
3.1.1 Controls activity of the cell
3.1.2 Stores genetic information (for reproduction)
3.2 Chloroplast
3.2.1 Site for photosynthesis
3.3 Mitochondria
3.3.1 Site of respiration/energy (ATP) production
3.4 Vacuoles
3.4.1 Storage
3.5 Plasma membrane
3.5.1 Compartmentalise biochemical reactions
3.5.2 Regulates substances travelling in & out
3.5.3 Contains the cytoplasm of the cell
3.6 Cellulose cell wall
3.6.1 Provide structural support
3.6.1.1 Fully permeable
3.7 Note: Cytoplasm --> cytosol + organelles
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