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Body mass index bitesize biology: The importance of knowing your Body Mass Index (BMI)

Find out your BMI.

Ethan Walker
Friday, January 13, 2017
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  • TOP OF PAGE and sub-index c Regular aerobic exercise can reduce your risk from some non-communicable diseases If you body mass index bitesize biology a high resting heart rate measured by your 'pulse' and you are slow to recover from physical exerciseyou should be aware these observations are linked to an increased risk of developing heart disease CVD, cardiovascular disease. Nutrients are substances needed for growth, metabolism, and for other body functions.

  • Measuring your waist is a good way to check you're not carrying too much fat around your stomach, which can raise your risk of heart disease, type 2 diabetes and stroke. Accept two marks for correct answer.

  • The brain - what the different parts do and the dangers if damaged gcse biology revision notes.

  • Maths questions might include graphs and tables as well as calculations. Your BMI is an indication of whether your body mass is at a healthy level in proportion to your height.

  • The Body Mass Index The body mass index is a bitfsize guide to help the medical profession decide whether you are underweight, normal, overweight or obese - based on your height and height. Carbohydrates and fats are needed to provide energy for your body chemistry to function correctly, and of course to keep you warm at 37 o C.

How can lifestyle, genes and environment affect health? - OCR 21C

If you have an eating disorderthe BMI calculator results do not apply. Advice for parents of healthy-weight children. How your GP can help you lose weight How to lose weight in a wheelchair Managing weight with a learning disability. Don't forget to take a ruler and calculator.

You do need mineral salts containing eg sodium, calcium, potassium and chloride ions BUT too much salt sodium index bitesize can cause high blood pressure and heart problems. Ondex brain - what the different parts do and the dangers if damaged gcse biology revision notes. Doc Brown's Biology. Nutrients are substances needed for growth, metabolism, and for other body functions. Calculate his BMI. Particular deficiency diseases are caused by lack of specific vitamins or minerals eg lack of vitamin C causes scurvy which leads to problems with gums, the skin and joints.

The bar charts show the increased risk of developing Type bitesixe diabetes associated with people's body mass index BMI. If drawing graphs, make sure you: put the independent variable on the x-axis and the dependant index bitesize biology on the y-axis construct regular scales for the axes label the axes appropriate plot each point accurately decide whether the origin should be used as a data point draw a straight or curved line of best fit If you are asked to calculate an answer and it has lots of decimal places, don't forget to use the same number of significant figures as the data in the question. Sample question 1 - Foundation Question Research shows that overweight people may develop type 2 diabetes. Use this calculator to check your body mass index BMI and find out if you're a healthy weight.

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Being underweight could be a sign you're not eating biteesize or you may be ill. You should use your pre-pregnancy weight when calculating your BMI. Underweight teen boys Underweight teen girls Supporting someone with an eating disorder. Find out your BMI. The bar charts show the increased risk of developing Type 2 diabetes associated with people's body mass index BMI.

A BMI above the healthy weight range or too much fat around your waist can increase your bltesize of serious health body mass index bitesize biology like:. A risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. Obesity leads to high blood pressure and the build-up of fatty deposits in the arteries, which lead to cardiovascular disease. They will then have a blank space for you to show your working. Tea with sugar.

Give your answer to two significant figures. Obesity accounts for 80 to 85 per cent of the risk of Type 2 diabetes. It also increases the likelihood of developing diabetesanother risk factor for cardiovascular disease. Rising obesity is linked with 'western diet' - a diet that includes energy-rich 'fast foods' and an inactive lifestyle. Answer to two significant figures.

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A diabetic athlete is advised to estimate the number of grams of body mass index bitesize biology in his meals in order to calculate the number of units of insulin he will need to inject to lower his blood glucose concentration. Sample question 1 - Foundation Question Research shows that overweight people may develop type 2 diabetes. Don't forget to check whether you need to do this. How your GP can help you lose weight How to lose weight in a wheelchair Managing weight with a learning disability. Measuring waist size is not routinely recommended for children because it does not take their height into account.

Although the usual causes of obesity are overeating, lack of sufficient exercise and bad diet, bltesize problems can also help cause obesity. What is in a balanced diet? Proteins are used by the body to build cells - growth of new tissue, cell repair and cell replacement. This has been clearly shown from scientific studies e. In the end for many people the best thing is to take in less calories and eat a smaller better balanced nutritious diet AND take more exercise. The bar charts show the increased risk of developing Type 2 diabetes associated with people's body mass index BMI. Lack of a good healthy diet can cause a person to be overweight or underweight.

Black, Asian and other minority ethnic groups have a higher risk of developing some indec chronic conditions, such as type 2 diabetes. Research shows that overweight people may develop type 2 diabetes. People with a very high body mass index BMI are defined as obese. He needs to inject 1 unit for iindex 10 grams of carbohydrate he consumes. Measuring your waist is a good way to check you're not carrying too much fat around your stomach, which can raise your risk of heart disease, type 2 diabetes and stroke. A diabetic athlete is advised to estimate the number of grams of carbohydrate in his meals in order to calculate the number of units of insulin he will need to inject to lower his blood glucose concentration. If you are asked to calculate an answer and it has lots of decimal places, don't forget to use the same number of significant figures as the data in the question.

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Vitamins - different structures, e. The body mass index is a 'rough' guide body mass index bitesize biology help the medical profession decide whether you are underweight, normal, overweight or obese - based on your height and height. Enter specific biology words or courses e. If you have a high resting heart rate measured by your 'pulse' and you are slow to recover from physical exerciseyou should be aware these observations are linked to an increased risk of developing heart disease CVD, cardiovascular disease.

Malnutritio n means lack of proper nutrition, caused by not having bitesize biology to eat, not eating enough of the right things, or being unable to use the food that one does eat. On average men tend to have a greater metabolic rate because they tend to have a greater proportion of muscle. Body mass index BMI is a useful measure of overweight and obesity. The waist-to-hip ratio should also be taken into consideration see below.

Homeostasis - control of blood sugar level - insulin and diabetes gcse biology revision notes. Enter specific biology words or courses e. See Vitamins E numbers, food additives, cooking chemistry! Obesity accounts for 80 to 85 per cent of the risk of Type 2 diabetes.

See Vitamins E numbers, food additives, cooking chemistry! Any energy not used will be mmass as fat. Having bitesize biology higher than normal BMI value increases your risk of developing type 2 diabetes. A note of caution - being fit does not necessarily mean you are healthy, a common assumption! For example, teenagers need a high-protein diet to provide the raw materials for growth. Respiration - aerobic and anaerobic in plants and animals.

What is a healthy diet?

Or you can use it to check your child's BMI. The BMI calculator will give you a personal calorie allowance to help you achieve a healthy weight safely. BMI can be calculated using the equation:. Don't forget to check whether you need to do this.

The BMI is calculated using a person's weight and their height. Answer to two significant figures. Understanding calories Very low calorie diets Calorie checker. They will then have a blank space for you to show your working. Pregnancy will also affect a woman's BMI result.

Each unit of insulin he injects reduces his blood glucose concentration by 1. Your BMI is an indication of whether your body mass is at a healthy level in proportion to your height. They will then have a blank space for you to show your working. Don't forget to take a ruler and calculator. Accept the

Blood glucose levels and obesity

The waist-to-hip ratio Where the body stores fat is quite important. Your BMI is an indication of whether your body mass is at a healthy level in proportion to your height. It depends on how old the person is, whether they are male or female and how active they are.

Being obese - with deposits of lipids in the abdomen - increases blood pressure beyond normal levels and increases levels of blood lipids. Body mass index bitesize biology healthy - defence against pathogens, infectious diseases, vaccination, drugs, monoclonal antibodies. Balanced nutritious food intake and doing some regular 'aerobics' to help reduce the risk from some non-communicable diseases, obesity indexes. There are three broad classes of macronutrients: proteins, carbohydratesand fats. Carbohydrates and fats are needed to provide energy for your body chemistry to function correctly, and of course to keep you warm at 37 o C, but, not too much, or excessive fats or carbohydrates build up in your body which can lead to obesity. The light blue colour changes to purple if proteins are present.

  • A person loses mass when the energy content of the food taken in is less than the amount of energy expended by the body.

  • The best way to lose weight if you're overweight is through a combination of diet and exercise. The BMI is calculated using a person's weight and their height.

  • See also Respiration - aerobic and anaerobic gcse biology revision notes.

Sub-index for this page. There are different charts for adults and young people. Sign up Log in. Examples of surfaces for the exchange of substances in animal organisms gcse biology revision notes. Title Food, Nutrition and Diet.

If you do little exercise and have a job body mass index bitesize biology in an office, you should reduce your carbohydrates and fats intake accordingly because you need less energy to get through the day. The rate at which all the chemical reactions in the cells of the body are carried out the metabolic rate varies with the amount of activity you do and the proportion of muscle to fat in your body. Why is regular exercise good for? The BMI is calculated using a person's weight and their height. You can be unhealthy because of a lack of balanced diet but you could still be physically non-obese and fit. A very high BMI means that someone is overweight or even obese. Be aware that our bodies provide a good environment for many microbes to live and multiply at our expense and can make us ill once they are inside our body.

Understanding your BMI result

People can inherit factors that affects the blood cholesterol level. This has been clearly shown from scientific studies e. Hitesize brain - what the different parts do and the dangers if damaged gcse biology revision notes. The risk of developing cardiovascular disease and Type 2 diabetes can be reduced by eating a balanced diet, with unrefined, unprocessed, 'whole foods', and taking regular exercise. Mineral ions and vitamins are needed in small amounts for healthy functioning of the body - organs, skin, bones etc.

Accept two marks for correct answer. Don't forget to check whether you need to do this. Give your answer to two significant figures. Being underweight could be a sign you're not eating enough or you may be ill.

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Bigger people tend to have a higher metabolic rate because more energy is needed to bitesize biology a greater mass of cells. This causes glucose levels in the blood to rise to dangerous levels. It depends on how old the person is, whether they are male or female and how active they are. The Body Mass Index. If you are male and your waist-to-hip ratio is over 1. The waist-to-hip ratio.

  • The effects of malnutrition do depend on what is missing from the diet but common symptoms are slow growth in children arrested developmentweight loss in adults, poor resistance to disease and infection, fatigue low physical activity, lack of energy. Protein are required for growth and repair.

  • Being underweight could be a sign you're not eating enough or you may be ill. Science calculations Maths questions often start with the command words 'calculate' or 'determine'.

  • If you are above the moderate waist-to-hip ratio values you are carrying too much fat around your 'middle' - referred to as abdominal obesity. What are the health implications for the content of the food in a meal OR what is the meal deficient in?

  • Measuring waist size is not routinely recommended for children because it does not take their height into account. People with a very high body mass index BMI are defined as obese.

  • Cholesterol is an essential fatty substance for good health and its in every cell in the body but if it is too high it causes fatty deposits on the inner surfaces of blood vessels causing higher blood pressure and heart disease.

Biolohy video provides an overview of balcanced diet The amount and index bitesize biology of protein is important. The light blue colour changes to purple if proteins are present. Appreciate that a combination of a balanced diet and regular exercise is needed to help keep the body healthy. Diet and exercise. Exercise increases the amount of energy expended by the body. Obesity accounts for 80 to 85 per cent of the risk of Type 2 diabetes. Water - water all chemical reactions take place in water.

Keeping body mass index bitesize biology - communicable diseases - pathogen bio,ogy gcse biology revision notes. A 16 year old boy has a body mass of 65 kg and is 1. An introduction to the nervous system including the reflex arc gcse biology revision notes. We take our food in ready-made as complicated organic molecules. An unbalanced diet may also lead to deficiency diseases or conditions such as Type 2 diabetes.

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Use this calculator to check your body mass index BMI and find out if you're a healthy weight. If drawing graphs, make sure you: put the independent variable on the x-axis and the dependant variable on the y-axis construct regular scales body mass index bitesize biology the axes label the axes appropriate plot each point accurately decide whether the origin should be used as a data point draw a straight or curved line of best fit If you are asked to calculate an answer and it has lots of decimal places, don't forget to use the same number of significant figures as the data in the question. BMI can be calculated using the equation:. Accept the Find out more in underweight children aged 6 to 12 and very overweight children.

Diet and exercise. In rich bitsize countries we are often dealing with 'overweight' people eating too much rich fatty food, but in poorer underdeveloped countries we are dealing 'underweight' people, particularly young children suffering from malnutrition. Record their initial baseline resting heart rate. Regular exercise can increase your metabolic rate because it builds muscle as well as using more energy due to performing more physical activities than just sitting around. Enter specific biology words or courses e.

Enter specific biology words or courses e. The waist-to-hip index bitesize biology Where the body stores fat is quite important. You do need mineral salts containing eg sodium, calcium, potassium and chloride ions BUT too much salt sodium chloride can cause high blood pressure and heart problems. This video provides an overview of balcanced diet The amount and type of protein is important. Nutrients are substances needed for growth, metabolism, and for other body functions. An introduction to the nervous system including the reflex arc gcse biology revision notes.

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Keeping healthy - defence against pathogens, infectious diseases, vaccination, drugs, monoclonal antibodies. People can inherit factors that affects the blood cholesterol level. Why do we need protein in our diet? Proteins from animals are called first class proteins because they contain more variety of amino acids compared with plant proteins.

Being underweight could be a sign you're not eating enough or you may be ill. Back to Healthy weight. The truth about carbs. The table shows the estimated carbohydrates in the breakfast eaten by the athlete.

Orange juice. You might earn marks for your working even if you get the answer incorrect. For children and young people aged 2 to 18, the BMI calculator takes into account age and gender as well as height and weight. He needs to inject 1 unit for every 10 grams of carbohydrate he consumes. Type 2 diabetes is where the body's cells lose their sensitivity to insulin - they no longer respond, or respond less effectively, to the insulin that's produced. Underweight teen boys Underweight teen girls Supporting someone with an eating disorder. Keep up the good work!

Find out how your Bitssize can help you lose weight and check out the Change4Life website for practical tips on staying healthy as a family. Don't forget to check whether you need to do this. Please get further advice from a GP. Accept two marks for correct answer. A BMI above the healthy weight range or too much fat around your waist can increase your risk of serious health problems like:.

Exercise increases the amount of energy expended by the body. Index bitesize biology are nutrients that provide calories or energy. Obesity is a common disorder in developed countries eg in Europe and the US. If you are overweight or ,ass, you are at higher risk of developing serious health problems, including heart disease, high blood pressure, type 2 diabetes, gallstones, breathing problems, and certain cancers. People who live on a poorly balanced diet are malnourished and malnourishment is common in the poorer developing countries of the world eg in Africa. The body mass index is a 'rough' guide to help the medical profession decide whether you are underweight, normal, overweight or obese - based on your height and height. Optics - lens types convex, concave, usesexperiments, ray diagrams, correction of eye defects gcse physics.

You might earn marks for your working even if you get the answer incorrect. Don't forget to check your rounding. Orange juice. Answer to two significant figures. The BMI calculator will give you a personal calorie allowance to help you achieve a healthy weight safely.

What can I do body mass index bitesize biology my child is very overweight? Underweight teen boys Underweight teen girls Supporting someone with an eating disorder. Maths questions biologg start with the command words 'calculate' or 'determine'. A risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. Apart from these limitations, the BMI is a relatively straightforward and convenient way of assessing someone's weight. Calculate the BMI for a person who has a mass of 77 kilograms and a height of 1. Calculate how many units of insulin the athlete would need to inject to control the rise in blood glucose levels.

How can lifestyle, genes and environment affect health? - OCR 21C

You can be unhealthy because of a lack of balanced diet but you could still be physically non-obese and fit. This video provides an overview of balcanced diet The amount and type of protein is important. There are different charts for adults and young people. Reaching and maintaining a healthy weight is important for overall health and can help you prevent and control many diseases and conditions. Note from on the covid flue pandemic : Research has shown that obese people are more likely to be seriously ill with the virus than non-obese people - more severe fever, more likely to be hospitalised and more likely to die!

You might earn marks for your working even if you get the answer incorrect. The BMI which has been calculated is compared to the appropriate chart in order to discover whether the person is underweight, a healthy weight, overweight or obese. Accept the Obesity leads to high blood pressure and the build-up of fatty deposits in the arteries, which lead to cardiovascular disease. Body Mass Index BMI and health A risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. There is no cure for Type 2 diabetes, but it may be possible to control it by diet and exercise. Advice for parents of healthy-weight children.

Carbohydrates sometimes referred to as Starch are required by our biopogy as a source of energy. There body mass index bitesize biology lots of slimming products on the market eg from special diets 'Atkins Diet'diet pills, low calorie milkshakes, soups, ready made meals etc. Carbohydrates and fats are needed to provide energy for your body chemistry to function correctly, and of course to keep you warm at 37 o C, but, not too much, or excessive fats or carbohydrates build up in your body which can lead to obesity. Cholesterol is an essential fatty substance for good health and its in every cell in the body but if it is too high it causes fatty deposits on the inner surfaces of blood vessels causing higher blood pressure and heart disease.

For body mass index bitesize biology and young people bifesize 2 to 18, the BMI calculator takes into account age and gender as well as height and weight. Obesity accounts for 80 to 85 per cent of the risk of Type 2 diabetes. A risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. Underweight children aged 2 to 5 Underweight children aged 6 to

  • Having a higher than normal BMI value increases your risk of developing type 2 diabetes. Homeostasis - introduction to how it functions negative feedback systems explained gcse biology revision notes.

  • See a GP if you're concerned about your child's weight. Measuring waist size is not routinely recommended for children because it does not take their height into account.

  • See also Enzymes - section on digestion and synthesis gcse biology revision notes. It provides energy and the raw materials for growth.

  • Don't confuse with starvation, where there is not enough food of any description to maintain life - the pictures you see on your TV of very thin people in Africa, on the edge of life exemplifies this pitiful state.

  • If you have too much saturated fat in your diet, your blood cholesterol levels are raised above what is needed and deposits form on the walls of your blood vessels leading to higher blood pressure. Keeping healthy - communicable diseases - pathogen infections gcse biology revision notes.

The amount and type of protein is important. Fibre is not digested in our diet. Exercise increases the amount of energy expended by bitesize biology body. A person loses mass when the energy content of the food taken in is less than the amount of energy expended by the body. Don't confuse with starvation, where there is not enough food of any description to maintain life - the pictures you see on your TV of very thin people in Africa, on the edge of life exemplifies this pitiful state. This causes glucose levels in the blood to rise to dangerous levels. Carbohydrates sometimes referred to as Starch are required by our bodies as a source of energy.

  • Calculate his BMI.

  • Give your answer to two significant figures. They may be able to refer you to your local healthy lifestyle programme for children, young people and families.

  • Fat can be seen to be present in food if a white emulsion tiny droplets of fat in water is made after mixing the food with water and ethanol.

  • There are different charts for adults and young people.

Metabolic rate body mass index bitesize biology be affected by inherited factors. Fibre is important because it allows the muscles in our intestines to move bitfsize material along called peristalsis and prevents constipation. An unbalanced diet may also lead to deficiency diseases or conditions such as Type 2 diabetes. BUT has the diet been properly scientifically tested and evaluated? Being obese - with deposits of lipids in the abdomen - increases blood pressure beyond normal levels and increases levels of blood lipids.

This causes glucose levels in the blood to rise to dangerous levels. Accept the A risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. Back to Healthy weight. Please get further advice from a GP.

What is metabolism? Why do we need both fats and carbohydrates in our diet? Sub-index for this page a What is a healthy balanced diet?

If you have too much saturated fat in your diet, your blood cholesterol levels are raised above what is needed and deposits form on the walls of your blood vessels leading to higher blood pressure. The light blue colour changes to purple if proteins are present. Note from on the covid flue pandemic : Research has shown that obese people are more likely to be seriously ill with the virus than non-obese people - more severe fever, more likely to be hospitalised and more likely to die! The Body Mass Index The body mass index is a 'rough' guide to help the medical profession decide whether you are underweight, normal, overweight or obese - based on your height and height. Skip to main content.

Body Mass Index BMI and body mass index bitesize biology A risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. The BMI which has been calculated is compared to the appropriate chart in order to discover whether the person is underweight, a healthy weight, overweight or obese. The best way to lose weight if you're overweight is through a combination of diet and exercise. He needs to inject 1 unit for every 10 grams of carbohydrate he consumes. Being underweight could be a sign you're not eating enough or you may be ill.

Accept the Use this calculator to check your body mass index BMI body mass index bitesize biology bitesiez out if you're a healthy weight. The table shows the estimated carbohydrates in the breakfast eaten by the athlete. Overweight children are thought to be at increased risk of a variety of health conditions, and they're also more likely to be overweight as adults. Pregnancy will also affect a woman's BMI result.

See a GP biologu you're concerned about your child's weight. They may be able to refer you to your local healthy lifestyle programme for children, young people and families. The BMI which has been calculated is compared to the appropriate chart in order to discover whether the person is underweight, a healthy weight, overweight or obese.

You can use your BMI result as a starting point for further discussion with a GP about your weight and general health. BMI healthy weight calculator - Healthy weight Secondary navigation You and your weight Weight facts Hidden causes of weight gain 9 medical reasons for putting on weight How can I speed up my metabolism? Calculate how many units of insulin the athlete would need to inject to control the rise in blood glucose levels. Rising obesity is linked with 'western diet' - a diet that includes energy-rich 'fast foods' and an inactive lifestyle.

BUT has the diet been properly scientifically tested and evaluated? A risk factor for body mass index bitesize biology diseases - including cardiovascular disease, fatty liver disease, boxy diabetes - is weight. It depends on how old the person is, whether they are male or female and how active they are. An introduction to the nervous system including the reflex arc gcse biology revision notes. Obesity is a common disorder in developed countries eg in Europe and the US.

Sample exam questions - animal coordination and control

See a GP if you're concerned about your child's weight. How your GP can help you lose weight How to lose weight in a wheelchair Managing weight with a learning disability. Accept the Edexcel questions courtesy of Pearson Education Ltd.

The BMI calculator will give you a personal calorie allowance to help you achieve a healthy weight safely. See a GP if you're concerned about your child's weight. Body mass index bitesize biology risk factor for many diseases - including cardiovascular disease, fatty liver disease, and diabetes - is weight. Edexcel questions courtesy of Pearson Education Ltd. Advice for parents of healthy-weight children. Obesity accounts for 80 to 85 per cent of the risk of Type 2 diabetes. The best way to lose weight if you're obese is through a combination of diet and exercise, and, in some cases, medicines.

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This has been clearly shown from scientific studies e. Nutrients are substances needed for growth, metabolism, and for other body functions. What is metabolic rate? Examples of surfaces for the exchange of substances in animal organisms gcse biology revision notes. The Body Mass Index.

If you are bitesize biology or obese, you are at higher risk of developing serious health problems, including heart disease, high blood pressure, type 2 diabetes, gallstones, breathing problems, and certain cancers. Your metabolic rate can stay up even after you have finished engaging in more physical exercise, particularly if it has been strenuous. Lack of a good healthy diet can cause a person to be overweight or underweight. Hormone systems - menstrual cycle, contraception, fertility treatments gcse biology revision notes.

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