do sunbeds cause cancer
Do Sunbeds cause Cancer? Sunbeds today are becoming a rising and fashionable trend to turn yourself from a normal white person, as it is only whites that use them no offence to the black people, to someone that looks like they have just climbed out the fruit bowl: an orange. But people don't realise that using a sunbed is exactly liked being in the sun to even dangerous. Did you know that 30 mins of sun in any weather on your face and arms is the right amount of vitamin D. So what does half an hour to an hour or more on your whole body. Contents page What is Radiation? 2 Ionising radiation 2 Properties of radiation 3 The Electromagnetic Spectrum 4 What is Cancer? 5 Arguments for and against. 6 My Opinion 9 Bibliography What is Radiation? Radiation is a general term used to describe the emission or transfer of energy, as waves or particles, through the air or other substances. Familiar kinds of radiation are the sun's rays, microwaves used for cooking in microwave ovens, radar used to track or guide planes, and radiowaves for mobile phones. www.ux1.eiu.edu Ionising radiation Ionising radiation from radioactivity is caused by the disintegration of an extremely small
Could excercise be doing any damage?
We are told to 'get more exercise'. Walking, cycling or going to the gym are recommended, but do they really exercise your heart? Could it be doing any damage? As our heart is a muscle, the more it contracts, the more exercise it gets. To provide our body with energy, our body has to perform the process of respiration. This is a chemical reaction which uses the reactants Oxygen and Glucose to release high amounts of energy that can be used to make our muscles contract. Glucose + Oxygen --> Carbon Dioxide + Water Our body receives the glucose used in the reaction from the food we eat. The food is digested in the stomach and then the digest remains enter the small intestine. The small intestine has thin walls so that the glucose and other nutrients from the digested food can diffuse from the intestine into the plasma of the blood. Diffusion is a process of movement where a substance from an area of high concentration moves through a membrane to an area of lower concentration, this is known as moving down the concentration gradient. The plasma is a liquid substance which is used to transport chemicals around the body, such as nutrients and hormones. The glucose (C6H12O6) is pumped around the body in the blood by the heart so that it can be used in respiring cells for aerobic respiration. We get our oxygen required for respiration from the air. When we breathe in, oxygen
The effect of Exercise on Pulse rate
The effect of Exercise on Pulse rate In this experiment I am going to be looking at how exercise affects the pulse rate of the body. By the end of the experiment I hope to have found a connection between exercise and how it affects the pulse rate (for example, does the pulse rated increase or decrease?). I will study this by taking a group of students and asking them to exercise for a short amount of time, taking their pulse before and after this exercise to find out if there is any change in the rate of it. Hypothesis and Biological knowledge The heart is a huge muscle found in the chest. The main use of the heart is to pump blood, which delivers oxygen, glucose and much-needed chemicals to other parts of the body. The muscle making up the heart is called Cardiac muscle; this special muscle does not wear down as other muscle does in the body. This is because it has to constantly beat to keep us alive, so cannot die out and be replaced by new muscle. The cardiac muscle also has another difference to any other muscle that we find in places like our legs or arms, this is that it has it's own beat, moving to make the whole heart pump, this type of muscle is called myogenic muscle, which means (moves on it's own). There are three sections to how the heart pumps. As the heart never stops pumping these three stages carry on in a circle. Diastole is when the muscles of
To investigate the effect of Caffeine / Nicotine on reaction times.
To investigate the effect of Caffeine/Nicotine on reaction times. Introduction. Caffeine is an alkaloid present in the leaves of certain plants such as coffee and tea. It is known to be a stimulant, which perhaps has the effect on individuals of keeping them awake or making them more alert. Caffeine has been shown to increase the heart rate immediately after consumption and then having a time lag before the heart rate returns to its normal pattern. Other associated physiological processes are similarly affected for example the rate of respiration Nicotine is also an alkaloid but rather more severe in it's action in that it can be habit forming. Individuals speak of being calmed down though the intake of nicotine plus a feeling of well-being involved in the activity, this chemical therefore should have a bearing on reaction times particularly if the individual was in a state of tension before consuming the nicotine. Aim: The reaction times of individuals may well depend upon the intake of stimulants, such as caffeine and nicotine, and the aim of this experiment is to determine whether there is any significant difference in performing a task when under the influence of these substances. The hypothesis will be put forward that intake of caffeine or nicotine will have a significant difference but this is going to depend on variables difficult to quantify in a similar or
Drugs - neagative effects of common illegal drugs.
DRUGS By ROHIT PATEL Cannabis Effects Studies have linked heavy Cannabis / Marijuana use to anxiety and mental health disorders such as paranoia, depression, insomnia, schizophrenia and even a motivational syndrome which relates to a lack of ambition or drive. Ecstasy Effects Ecstasy effects can create pain in the mind and body of the very user who seeks pleasure from ecstasy effects. Pleasurable ecstasy effects that are sought include a relaxed upbeat mood and feelings, reduced anxiety, increased sensitivity to others and a high energy level that can be sustained for many hours. Effects also range from: Sleeping problems; Anxiety; Teeth cleaning; Addiction; Paranoia; Nausea; Chills and sweating; Blurred vision; Rash; Brain damage; Depression; Liver damage; Aggression Addiction Ecstasy is not addictive in the way that drugs like cocaine, nicotine and heroin are. Many users are, however, addicted to the emotional state they reach on the drug. Some feel they cannot live without it and become regular weekly users. Ecstasy is seductive - many users secretly know they would have difficulty going without it in the future, but wouldn't like to admit to it in terms of addiction. Calling a regular ecstasy user an addict usually provokes a negative reaction. Cocaine Effects Cocaine is very fast-acting but short-lived. The effects range from white knuckle, depending on
Investigate the effect of exercise on our heart rate.
Introduction In this introduction you will find information on what happens when you do exercise and what happens to your heart as you grow up. You will know about aerobic and anaerobic respiration. We will also do an experiment to check how long it takes your heart rate to go back to your recovery rate. The Heart: The muscular walls of the ventricles contract and relax continually. Every time the muscle contract, blood is pushed out through the outlet valves and into the arteries. The surge of blood causes your heartbeat. You can feel this surge of blood as a pulse in the arteries, at your wrist. The ventricles have a very thick wall made of strong muscles fibres. They need to be strong because they pump about 70 times every minute up to about 37 000'000 Exercise can help you lose weight by burning calories and increasing metabolism. It also helps you handle stress by burning chemicals in your blood stream like adrenaline that are released when you're under stress. So where do you start: If you have a diagnosis of angina or are recovering from a heart attack, angioplasty or surgery to treat coronary artery disease, ask your doctor when it's safe to begin gradually increasing your physical activity. Talk with your doctor about attending a cardiac rehabilitation program in your community. Everyone over the age of 40 should talk with their doctor before beginning
An Investigation to show how Different Exercises Affect the Pulse Rate
Contents: Aim: 3 Prediction: 3 Apparatus: 4 Fair Test: 4 Method: 4 Result: 4 Conclusion: 5 Evaluation: 5 An Investigation to show how Different Exercises Affect the Pulse Rate Aim: The aim of this experiment is to find my pulse rate after I run up and down stairs for one and then for two minutes I also want to find out what happens to my pulse rate when I run up and down stairs for two minutes with a bag with two and then four books. Prediction: I predict that during exercise, my pulse rate will increase because blood is being pumped faster around my body. The energy is taken out of oxygen and sugar needed for my muscles to respire aerobically. Aerobic respiration is the release of energy from glucose or another organic substrate in the presence of Oxygen. Strictly speaking aerobic means in air, but it is the Oxygen in the air, which is necessary for aerobic respiration. Anaerobic respiration is in the absence of air. Here is a molecular model of a glucose molecule. A molecule of glucose contains six atoms of Carbon (shown in blue), twelve atoms of Hydrogen (shown in green), and six atoms of Oxygen (shown in red). In the book Biology for you, it is said that during vigorous exercise the heart and lungs cannot get enough oxygen to the muscles quick enough. When this happens, your muscles start to an aerobically respire. Glucose is broken down to lactic acid,
Ideal Position to Recover Resting Heart Rate- Lab. Does the physical positioning of the human body, whether standing, sitting, or lying down, effect the time it takes the heart rate to recover to the resting heart rate (RHR) after moderate exercise?
Recovery to Resting Heart Rate Date of Experiment: Mar. 16, 2009- Mar. 17, 2009 Research Question: Does the physical positioning of the human body, whether standing, sitting, or lying down, effect the time it takes the heart rate to recover to the resting heart rate (RHR) after moderate exercise? Hypothesis: The physical position of the body after exercise does affect the time it takes to recover the heart rate back to the RHR, the position that would allow the recovery back to the RHR the quickest after moderate exercise would be when the subject is sitting down because when standing up, the body is using energy and the heart to keep the body up against the force of gravity, and when lying down, the heart will need to pump blood even faster because the body's position might cause the blood to pool, and again, the heart will have to pump against the force of gravity directly. I believe that when sitting down, the heart uses the least amount of energy, and thus meaning that the recovery to the RHR would take the least time no matter what the gender or age is. Variables: Independent: o The physical positioning of the human body Dependent: o Amount of time it takes the resting heart rate Control: o Height of Chair Where the pulse is taken from o Amount of up-down done Amount of time doing exercise Materials: o Stop Watch Human Subjects o Chair at 55cm
Describe Cataracts and the technology that can be used to prevent blindness from them and assess the implications of this technology for society.
Describe Cataracts and the technology that can be used to prevent blindness from them and assess the implications of this technology for society. A cataract is the clouding of the eyes natural lens, which stops light from reaching the retina. Chemical proteins clumping together cause this clouding and overtime the lens will become opaque. People who suffer from cataracts will find their clarity of vision impaired and images will begin to appear blurry. They will find that they will become susceptible to sunlight and have poor night vision. Cataracts contribute to approximately half of the world's total blindness and technology is beginning to accompany for this growing concern. Technology can provide both temporary relief and a permanent resolution in regards to cataracts. In the beginning stages of cataracts, the associated symptoms may be improved with new spectacles, anti-glare sunglasses or magnifying lenses. However, as the cataracts develop overtime, surgery becomes the most viable option in saving vision. The cataract surgery consists of the replacement of the cloudy lens with an artificial intraocular lens (IOL). Cataract surgery is usually only necessary when the patient's vision loss interferes with everyday activities, such as driving, reading or watching TV. However, in some cases a cataract should be removed even if it does not cause an obstruction with the
can abortion be justified
Can abortion be justified and left in the hands of the mother alone? Contents page Intro and background p3 Arguments p4 Religion p5 Conclusion p6 Bibliography p7 Introduction I will investigate abortions reasons for and against abortions and what they consist of and why they are made legal. I will show different opinions on this and listing why they leave it in the hands of the mother and family. I will look at religious beliefs on abortion and the different ways of aborting a child. Study Abortions are removing or destroying an embryo or fetus from the uterus. There are two main different ways it can happen as a miscarriage or it can be surgically removed by surgery or by a chemical. Chemical abortion can be caused by certain drugs, administered in varying ways, which act upon the hormones of the mother to create a situation in which a newly-formed human being, known as a zygote or embryo at this stage, cannot survive. Most of these chemicals are used in combination, one drug to ensure that the embryo is killed, and a second to induce contractions so that the dead embryo is expelled from the uterus of the mother. In a vacuum aspiration abortion a tube is gently inserted into the womb through the cervix. The contents of the womb are sucked out
