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Organisation

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3º de ESO Biology (Topic 2: Organisation) Flashcards on Organisation, created by sofia Larrain on 04/29/2018.
sofia Larrain
Flashcards by sofia Larrain, updated more than 1 year ago
sofia Larrain
Created by sofia Larrain over 4 years ago
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Resource summary

Question Answer
Levels of organisation -Cell->tissue->organ system->organism -nerve cell->nervous tissue->brain->nervous system->homo sapiens.
Organisation + some system in the human body -muscle cell->muscle tissue->organ->system->organism. -circulatory system->respiratory system->digestive system->muscular system->skeletal system.
Food types Carbohydrates- energy fats- store energy, heat insulation proteins- growing + reparing cells, vitamin c- healthy gums vitamin d- strong bones mineral Ca- strong bones+ teeth Fe- making haemoglobin fibre- prevents constipation water- metabolic reaction in solution. Blood is mostly water.
Heart diagram
What is a stent What do you insert in the artery to prevent blockage What is a stent made of? -you insert in the artery of the heart to prevent it blockage from fatty deposites. -stent - plastic which is inserted into the artery to hold it open.
What is another way to stop the blockage. How do you stop the blockage. - insert a coronary by-pass -from another blood vessel, vein from the leg, is stitched into place to by-pass the blockage.
What are red blood cells? - contains a substance called haemoglobin. - binds oxygen diffusion into blood in the alveoli. Then called oxyhaemoglobin.
What are white blood cells? -immune system (fight of invading pathogens,) bacteria. -phagocytes- engulf pathogens (help clump pathogens for phagocytes to destroy.
What is insoluble? Why can't fat desolve. What does fat turn into? -Can't desolve. -fat oil can't mix into water, it does not combine. But when you mix it in bile it mixes up. -Fat -> glycerol and fatty acids.
Enzymes
What is an enzyme? Red blood cells contain haemoglobin What are platelets? -It's a biological molecule that speeds up a chemical reaction. -helps to prevent bleeding by putting a scab. -salivary glands- amylase (carbohydrates) -starch-glucose. Stomach (protease-protein) acid pH2 to 3
pH scale
Enzymes -Amylase breaks starch-> blood-> maltose -protease-> protease-> blood-> amino acid -lipase-> fats-> ->blood -> glycerol
Test for protein -add dilute sodium hydroxide in dilute copper sulphate. (If protein is presented turn purple colour.
Test for protein
Test for fats -shake food+ ethanol. Pour some of the solution in water. If fat presented it turns cloudy white.
Test for fats
Test for starch Iodine drop onto the food if turns blue/ black starch is presented.
Test for starch
Test for simple sugars e.g glucose Boil food in a test tube with benedicts if orange or red the food contains simple sugars.
Test for simple sugars e.g glucose
Enzymes It's to brake down large food molecules so that we can absorb the small molecules we need. Starch-> glucose Protein-> amino acid Fats-> fatty acids and glycerol.
The digestive system
Organs Introduce tu texto aquí...
Peristalsis Introduce tu texto aquí...
Peristalsis Circular muscle of the gut contract to push the food along the alimentary canal. -Fibre in the diet is necessary for this process. -without fibre a person can become constipated.
Bile and the liver What is bile were is it produced and what Two functions are they. -Bile is a chemical produced in the liver. And it’s stored in the gall bladder. -It neutralises stomach acids and produces alkaline conditions for enzymes to work in. - Emulsifies fats (mechanical digestion.)
The small intestine -¿what does it do, what’s its function? -where the products of digestion are absorbed into our blood stream. Villi provides a large surface area. - epithelium micro-villi increases surface area. -thin walls so small easier for diffusion. -glucose and amino acid absorbed into the blood by capillaries.
Large intestine ¿What is it? Indigestible fibre and water goes to the large intestine, it’s responsible for absorbing water and salts from remaining digested food.
Tumour -¿what type of Timor’s are there? -Malignant-> Tumour cancerous that can spread to other parts of the body. -Benign-> non-cancerous rumours that do not spread
Screening ¿What types are there? -When looking for cancer methods - blood test -urine test -X-ray test Women cancer is breastfeeding cancer called mammogram. Smear test-cervical -obesity -smoking more than 20% -alcohol -infections->hepatitis B & C -HPV -genetic disorders. -ionising radiation (suns ultraviolet.) -environment pollution
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