Staying Healthy
Name 2 hereditary diseases.
Thalassemia and colour blindness
State what is meant by microbes.
Micrrobes are tiny living things that cannot be seen with the naked eyes.
State two products formed when an acid reacts with a base.
Salt and water
Name the chemical needed to test for proteins and what colour would be observed?
Biuret’s solution
Violet colour is seen.
What is fitness?
Fitness is the ability to carry out physical activities.
Name 2 limitations in patients who undergo kidney transplant.
Patient may reject the new kidney
Patient needs to take immuno-suppressant medication for the rest of his life.
Explain why plaque formation inside the walls of arteries not healthy?
The plaque narrows the arteries and the heart has to pump harder to transport blood around the body.
John drinks fizzy drinks daily. Explain the effect of fizzy drink on dental health.
The carbon dioxide in the fizzy drink can wear off the teeth.
What is digestion?
Digestion is the breaking down of complex food into simpler and soluble substances.
What is meant by health?
Health is the state of being free from illnesses and diseases
What are 3 common reasons for kidney failure?
Poor diet , inherited from parents, accidents
Give three examples of microbes that are useful to man.
Bacteria in yoghurt promotes good intestinal health.
Yeast produces carbon dioxide and alcohol in bread making.
Bacteria and enyzme thickens milk to make cheese.
Jack wants to find out the colours that make up his packet of skittles.What method would you suggest to him?
Paper chromatography
Name the parts of the digestive system where no digestion takes place.
Gullet and large intestine
What are the ways of measuring fitness?
Strength
Stamina
Flexibility
Speed
Name 8 health issues related to over-dieting?
Lack of energy
Infertility
Hair loss
Heart failure
Death
Osteoporosis
Low blood pressure
What are the possible side effects of having too much sulfur dioxide and benzoic acid as food preservatives?
Both may cause allergic reactions and benzoic acid may also cause intestinal problems.
Julie uses detergent to wash off the stains on her dress. What method has she used?
Dissolving
Give 3 reasons why food is important to us.
Provide us with energy to carry out our daily activities
For growth and repair of injured body parts
To keep us healthy
Name 4 common joint problems.
Sprain
Dislocation
Arthritis
osteoporosis
Name some diseases caused by bacteria
Sore throat, tuberculosis, urinary tract infections, syphillis, gonorrhoea
Give 5 ways of reducing food spoilage.
1. using high temperatures
2. using low temperatures
3. reducing water content.
4. lowering pH
5.reducing oxygen supply
Jim tasted lemon and said it is acid as it has a sour taste. Give 5 other properties of acids.
pH less than 7
turns blue litmus red
reacts with base to give salt and water
reacts with metal to produce hydrogen
reacts with carbonates to produce carbon dioxide
Explain digestion of fats in the small intestine.
Bile is produced by liver to emulsify fats.
Enzyme lipase digests the tiny fat globules into fatty acid and glycerol.
Name 4 parts of knee joints.
Fluid
Cartilage
Ligament
Tendon