Cell Structure, Metabolism & Transport

Courtney Kennedy
Mind Map by Courtney Kennedy, updated more than 1 year ago
Courtney Kennedy
Created by Courtney Kennedy about 5 years ago


year 11 Human Bio Mind Map on Cell Structure, Metabolism & Transport, created by Courtney Kennedy on 03/14/2015.

Resource summary

Cell Structure, Metabolism & Transport
1 Cell Structure
1.1 Cell Membrane
1.1.1 surrounds cell and fills outer boundary
1.1.2 made up of a double layer of lipid molecules and proteins
1.2 Cytoplasm
1.2.1 thick fluid, fills inside of cell
1.3 Organelles
1.3.1 Golgi Body stack of flattened channels; packages proteins for secretion from the cell
1.3.2 Mitochondria 'powerhouses' of the cell working organelles that keep the cell full of energy
1.3.3 Nucleus large organelle, contains DNA
1.3.4 Lysosomes break down materials that are taken into cell, break down worn-out organelles
1.3.5 Centrioles located near nucleus, involved in cell division
1.3.6 Endoplasmic reticulum forms channels through cytoplasm, used for storage, support, synthesis and transport within the cell rough ER contains ribosomes attached to outside of membrane
1.3.7 Ribosomes amino acids joined together at ribosomes to make proteins
1.4 Cytoskeleton
1.4.1 assists in cell movement, protein fibres
2 Structure of Cell Membrane
2.1 fluid mosaic model
2.2 phospholipid bilayer; main structure
2.2.1 contains hydrophilic and hydrophobic heads and tails
2.3 cholestrol and protein molecules embedded in phopholipid bilayer
2.4 channel proteins, pore that allows ions, water and small molecules to pass through
3 Types of Transport
3.1 Diffusion
3.1.1 passive, high conc -> low conc
3.1.2 substances: alcohol, steriods, fat-soluble substances, O2, CO2
3.1.3 results in random movement of particles
3.2 Osmosis
3.2.1 passive, diffusion of water, high conc -> low conc
3.2.2 important for living cells, results in osmotic pressure
3.3 Carrier- Mediated
3.3.1 carrier proteins bind to molecules for transport, proteins are specific
3.3.2 can become saturated -> max rate of transport
3.3.3 carrier proteins can be regulated by hormones
3.4 Facilitated-Diffusion
3.4.1 passive; still diffusion, high -> low conc
3.4.2 substances: glucose, amino acids
3.5 Active Transport
3.5.1 needs energy, happens against conc. gradient, low -> high conc
3.5.2 substances: glucose, certain ions, amino acids
3.6 Vesicular Transport
3.6.1 always active, needs energy as vesicles (memranous bags) need to be built Endocytosis (into cell) -> cholestrol, iron ions Pinocytosis (liquids) Phagocytosis (solids - cell debris, microrganisms) Exocytosis (out of cell), contents of vesicles are pushed out through cell membrane mucus, enzymes, breastmilk
4 Tissues
4.1 Epithilium
4.1.1 covers and lines organs/hollow organs, ducts
4.1.2 location: outer layer of skin, lining of stomach, covering of heart
4.2 Connective
4.2.1 provides support and helps hold all body parts together
4.2.2 location: bone, ligaments & tendons, fat storage, tissue, cartilage
4.2.3 non-cellular material - matrix, cells not close together
4.3 Muscular
4.3.1 responds to a stimulus by contracting, becoming shorter
4.3.2 skeletal (voluntary, striated), attaches to bones involuntary (smooth, non-striated), iris, uterus, stomach, intestines, walls of blood vessels
4.4 Nervous
4.4.1 when part of a neuron is stimulated messages are carried along these projections
4.4.2 location: brain, spinal cord & nerves
5 Cell Metabolism
5.1 Anabolism - needs energy, e.g Protein synthesis
5.1.1 Catabolism - releases energy, e.g Cellular respiration
5.1.2 also known as Synthesis
5.2 Organic Compounds
5.2.1 Carbohydrates main source of energy, contains C, H, O2 simple unit: Monosaccharides (glucose), Disachharides (lactose) complex unit: Polysaccharides (starch, glycogen)
5.2.2 Proteins enzymes and structural materials, brokendown for energy, contains C, H, O2, N - often P, S simple unit: Amino acids (glycine, alanine), Peptides (dipeptide) complex unit: all Enzymes, Proteins contain 100+ Amino acids
5.2.3 Lipids store energy, phopholipid bilayer, steriods, contains C, H, O2 simple unit: Glycerol, Fatty acids complex unit: Triglyceride
5.2.4 Nucleic Acids RNA, DNA, large molecules, contains C,H, O2, N ,P, made of nucleotides simple unit: RNA complex unit: DNA
5.3 Cellular Respiration
5.3.1 glucose + oxygen -> carbon dioxide + water + energy
5.4.1 tranporter of energy, Adenosine Triphosphate, continually recycled
5.4.2 formed when energy releases, Adenosine Diphophate can be reused to store energy from Cellular Respiration
5.5 Anaerobic Respiration
5.5.1 respiration that does not require energy, allows cells to produce energy when no oxygen
5.5.2 glucose -> lactic acid + energy
5.6 Aerobic Respiration
5.6.1 glucose + oxygen -> carbon dioxide + water + energy
5.6.2 requires oxygen
Show full summary Hide full summary


Biology AQA 3.1.3 Cells
GCSE AQA Biology - Unit 2
James Jolliffe
Cells and the Immune System
Eleanor H
Biology Unit 2 - DNA, meiosis, mitosis, cell cycle
Function and Structure of DNA
Elena Cade
Unit 1 flashcards
Cell Transport
Elena Cade
Cells, Tissues and Organs
Cell Structure
Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
Henry Kitchen
Cells - Biology AQA B2.1.1