B2.1 Cells and Simple Cells Transport

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


AQA B2.1 Revision Mind Map

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B2.1 Cells and Simple Cells Transport
1 Different Cells
1.1 Animals
1.1.1 nucleus controls cell activities, and it is where genetic material is contained
1.1.2 cell membrane holds the cell content together
1.1.3 mitchondria energy is released from respiration- glucose is burned to release the energy
1.1.4 cytoplasm where most chemical reactions occur usually via enzyme catalysts
1.1.5 ribosomes protein-synthesis from amino acids occur
1.2 Plants
1.2.1 cell wall made of cellulose strengthens the cell and plant structure.
1.2.2 chloroplasts absorb sunlight energy to make food via photosynthesis
1.2.3 permanent vacuole filled with cell sap that contains sugars and mineral salts
1.2.4 + all the other parts of cell like an animal cell.
1.3 Bacteria
1.3.1 cell wall
1.3.2 cytoplasm
1.3.3 large chromosomal ring of DNA
1.3.4 Plasmid ring of DNA NOT in a distinct nucleus, more of a jumbled cluster.
1.3.5 Flagella
1.4 Yeast is a single-celled organism
1.5 Specialised Cells
1.5.1 Animals Red Blood Cells carry oxygen via their haemoglobin molecules White Blood Cells help out in the immune system Gamete Cells Sexual Reproduction cells (egg cell and sperm cell)
1.5.2 Plants Palisade Leaf structures are adapted to suit the photosynthesis site. Guard cells open and close the stomata- this allows oxygen and carbon dioxide to pass in or out.
1.6 Diffusion- when dissolved substance can come into or out of the cell from the cell membrane.
1.6.1 It is the spreading of gas or substance in solution, which results in the movement from a region of high concentration to a region of low concentration
1.6.2 it is a spontaneous movement
1.6.3 the greater the difference in concentration, the faster the rate of diffusion.
1.6.4 only relatively small molecules can diffuse through the cell membrane e.g. amino acids, not proteins or sugars like glucose and not carbohydrates like starch.
1.6.5 oxygen required for respiration diffuses through the membrane.
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