Biology Revision
Biology
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Sample Data
| Front | Wet Mount |
| Back | When samples are suspended in a liquid, such as water or immersion oil. A cover slip is placed from an angle. Wet mounts allow for aquatic samples and living organisms to be viewed. Staining also counts as a wet mount |
| Front | RER |
| Back | Has ribosomes bound to the surface and is responsible for the synthesis and transport of proteins. Secratory cells that release hormones or enzymes have more RER than cells that don't release them. It folds and processes the proteins
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| Front | What are the functions of triglycerides? |
| Back | Energy store Long hydrocarbon chains in triglycerides contain many carbon-hydrogen bonds with little oxygen. When oxidised during respiration this causes these bonds to break releasing energy to produce ATP. As triglycerides are hydrophobic they do not cause osmotic water uptake in cells so more can be storedInsulationTriglycerides are parts of the composition of the myelin sheath that surrounds nerve fibres - insulation increases speed of transmission of nerve impulses. Triglycerides compose part of the adipose layer below the skin which acts as insulation against heat lossBuoyancyLow density of fat tissue in crease the ability of animals to float more easilyProtectionThe adipose tissue in mammals contains stored triglycerides and this tissue helps protect organs from the risk of damage |