B1 1= Diet, exercise and health
B1 2= Disease and medicine
B1 3= Immunity and immunisation
B1 4= Human control systems
B1 5= Hormones and reproduction
B1 6= Control in plants
B1 7= Use and abuse of drugs
1) What is a balanced diet?A balanced diet is having the correct amounts of foods and energy to match the body's needs.2) What is your metabolic rate?The rate at which all of these chemical reactions occur.3) Explain why too much cholesterol is bad for your health?Cholesterol can block blood vessels, leading to heart problems or strokes.
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Diapositiva 2
Disease and medicine
1) Name two types of pathogen?Bacteria and viruses.2) What does an antibiotic do?Antibiotics kill bacteria, they disrupt the chemical reactions in the life processes of bacteria, they help to make us well, specific antibiotics work on different types of bacteria and antibiotics include penicillin.3) Why do scientists need to keep on producing new types of bacteria?Some bacteria can develop a mutation that gives them resistance to an antibiotic. They will survive by natural selection and form a resistant strain of the bacteria.As antibiotic resistant strains have developed, scientists have to make new antibiotics.
1) Name the two types of white blood cells?- Lymphocyte - Phagocyte2) What does immunity mean?Immunity means the ability to resist an infection.3) What is the difference between natural immunity and artificial immunity?Natural= when we are infected and some of the lymphocytes that produce the antibodies are retained to deal with future infections.Artificial= which the body is given immunity to a disease by intentional exposure to small quantities of it.
1) How might exercise change the muscle-to-fat ratio?2) Explain how cholesterol may lead to a heart attack?3) Explain how a bacterial infection makes you feel ill?4) Explain how natural selection could lead to the development of antibiotic resistant bacteria?5) Explain why antibiotic resistance is of such concern to doctors?6) What strategies do we use to reduce the development of resistant bacteria?7) Explain why an antibody will only kill one type of bacteria?8) Explain how a vaccination works?
1) The more muscle and less fat will increase the metabolic rate. This is because the reactions take place in the muscle.2) Cholesterol can block blood vessels which leads to heat attacks.3) The bacteria produces toxins which make u feel ill.4) Natural selection keep the bacteria alive.5) Overuse of antibiotics can lead to the growth of resistant bacteria.6) Reducing the use of antibiotics, reserving them for serious infections only. Ensuring the full course of antibiotics is taken.7) Different antibodies for different types of bacteria. One type of antibody will work on one type of bacteria.8) A deadly or inactive form of a pathogen is injected into the body. This stimulates the white blood cells that will produce antibodies that will destroy the specific pathogen. They can also produce antitoxins specific to a toxin released by the pathogen.
Questions-Healthy living
Diapositiva 5
Human control systems
1) What does coordination mean?Coordination means the correct response to the stimulus or correct behaviour.2) What is a receptor?A receptor is a sense organ3) Explain the differences between nervous control system and hormonal control systems?The nervous system acts by detecting a stimulus in receptors called sense organs. The hormonal system plays a role in controlling the balance of our internal systems.
1) What stimulus is detected by the eye?2) What is a synapse3) What is the function of a sensory neurone?4) What is a reflex action?5) Place the following structures in the correct order to describe the pathway of a reflex action: Motor neurone, receptor, stimulus, relay neurone, response effector, sensory neurone.6) Explain how the body cools down7) Explain why maintaining the body's temperature is important?
1) Light2) A synapse s the junction between two neurones.3) Takes impulses from receptors into the CNS 4) A reflex action is a rapid, protective,automatic response in he body.5) Stimulus-Receptor-Sensory neurone-Relay neurone-Motor neurone- Effector-Response.6) We sweat to cool us down7) The body needs stable temperature for its enzymes to function.
Diapositiva 7
Control in plants
1) What is a tropism?Tropism is when plant responses are in the form of growth movement.2) What do plats use to control tropism?Auxin3) Explain what happens to the distribution of Auxin when light is shone on the plant from one side.The Auxin moves down the stem.
1) Why do people find it difficult to stop taking some types of recreational drugs?The drugs are addictive and do good to the body to make the person feel good.2) Why are large numbers of patients used in drug testing?To give more reliable results.3) Why are laboratory trials of new drugs always carried out before clinical trials?To make sure the drugs work and are not dangerous.
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Diapositiva 9
Questions-control in plants & drug
1) Name three things that plants are sensitive to.2) Name a plant hormone.3) What is a drug?4) Give an example of a beneficial drug5) What was thalidomide used for?6) Why might an athlete inject steroids?7) Explain why steroids are banned in sports?8) Explain how auxins cause plant to grow towards light.9) Discuss the benefits and problems with the use of cannabis10) Explain why someone might become dependent on a drug?
1) Light, gravity and moisture2) Auxin3) A drug is a chemical that changes your body mentally or physically 4) Painkillers/antibiotics/statins.5) It was discovered as a sleeping pill. Also helped pregnant women in morning sickness.6) performance enhancing drugs and muscle development.7) Unfair advantage 8) It is produced in the shoot and root tips. They cause plants to grow.9) Benefits-Can be used to treat chronic painful illnesses such as multiple sclerosis. Leads the user onto more powerful drugs.10) It would make the person feel as though the drug has helped them and they would rely on the drug to make them better.
