8A science test paper questions Flashcards
Fats and minerals are types of nutrient in food. Name two other types of nutrient in food.
protein and carbohydrate
Describe what teeth do to food when we chew.
Teeth break the food into smaller pieces.
Three people are talking about diets.
Asha says: I’ve never had a diet.
Daniel says: I’m now on a diet because I need to lose weight.
Sylvia says: I’ve always had a diet.
Give a reason why Sylvia’s answer is the best.
Sylvia’s answer is the best because everyone has a diet, which refers to everything they eat.
Give a reason why the body needs to digest food.
To break food down into smaller, soluble molecules that the body can absorb.
Describe how food is pushed through the oesophagus.
Muscles above the food contracts squeezing the food along.
Describe one adaptation of the small intestine to its role of absorbing digested food.
The small intestine has villi to increase surface area for absorption
Name the process by which digested food molecules are absorbed into the body.
Absorbtion
What is the life process used to release energy from food? Tick one box.
A respiration
B digestion
C reproduction
D circulation
Respiration
What percentage of a diet does the pie chart show should be protein? Tick one box.
A 7%
B 12%
C 15%
D 33%
12%
Name one food you would find in the ‘dairy products’ section.
Milk
What is measured in kJ? Tick one box.
A mass
B weight
C energy
D force
energy
Superflakes are not a good source of protein. Name one food that is an excellent source
of protein.
Meat
Describe two ways our body can use protein.
Protein helps with growth and repair
Give a reason why fibre is good for the body.
It helps food move easily through the gut
If you add up the masses of the food substances in 100g, there seems to be nearly 18g
missing. What substance might this 18g be? Tick one box.
A sugar
B starch
C vitamin C
D water
Water
Give two reasons why Peter now has a big belly.
He now does less physical exercise.
He eats more energy than he needs now
Explain why Peter may gain more weight if he keeps eating a lot of sugary foods.
sugar is stored as fat if it is not used for energy
Suggest one reason why Peter should lose some weight.
Being overweight increases the risk of health problems like heart disease or diabetes.
What is the substance that the student is trying to show using iodine solution? Tick one box.
A sugar
B protein
C starch
D fat
starch
After 40 minutes, the sample taken from the tube at 25°C does not produce a black colour
with iodine solution. What type of substance in saliva causes this to happen? Tick one box.
A enzymes
B spit
C chemical
D bile
enzymes
At what temperature does the saliva work the fastest?
35°C
Name the organs the food passes through in order, starting with the mouth. (SPELLING MATTER)
mouth, oesophagus, stomach, small intestine,
large intestine, rectum, anus
what colour is: fat, saturated fat,
sugar and salt
fat (amber), saturated fat (red),
sugar (red), salt (amber)
Peter needs about 9000kJ per day. How many grams of biscuits would he have to eat to
get all the energy he needs for one day?
500g
