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HIA International — Grade 7

Unit 1: Breathing and respiration

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Unit 2: Dissolving, solubility and chromatography

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Unit 3: Forces, motion and pressure

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Unit 4: Ecosystems

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Unit 5: Atoms, purity and climate

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Unit 6: Light and objects in space

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Unit 7: Nutrition, health and movement

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Unit 8: Energy changes and reactions of metals

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Unit 9: Magnetism and electromagnets

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Quiz

7.1 Nutrients

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Nutrients Checkpoint Biology quiz: free practice for Cambridge Checkpoint Biology 0893. Work through this Nutrients Checkpoint Biology quiz and get instant feedback on every answer. If you get stuck, review the 6.1 Nutrients lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
A cereal bar contains 10 g of fat, 20 g of carbohydrate and 5 g of protein. Using the table, the total energy in the bar is _____.
about 425 kJ
about 795 kJ
about 710 kJ
about 1295 kJ
2.
Dietary fibre is not digested but keeps food moving through the gut. - True or false?
True
False
3.
Zara put iodine solution on a slice of apple and it turned blue-black. She says this shows the apple contains glucose. True or false?
True – blue-black is the positive result for glucose
False – blue-black with iodine shows that starch is present
True, because apples are known to taste sweet
False – it shows that protein is present
4.
Polar explorers are advised to eat extra fat. Which is the best reason?
Fat is needed to make haemoglobin for the blood
Fat is used mainly to build new muscle cells
Fat is a rich energy store and gives insulation
Fat adds bulk that helps food move through the gut
5.
In the iodine test on a food, a blue-black colour means that starch is absent. True or false?
True – blue-black is the negative result
True, but only when the food is heated first
False – blue-black means starch is present
False – blue-black means protein is present
6.
Omar tested the same carton of orange juice each day by adding it drop by drop to 1 cm³ of blue DCPIP until the blue colour disappeared. What does his graph show?
Dr Dabour Hub Academy - figure 1
The vitamin C content rose as more drops were needed
The juice gained sugar, so it took longer to react
DCPIP becomes weaker each day, so the juice is unchanged
The vitamin C content of the juice fell as it was stored
7.
Protein is needed only for storing energy. - True or false?
True
False
8.
Priya is vegetarian and her doctor says she has anaemia. Using the bar chart, which food would be the best addition to her meals?
Dr Dabour Hub Academy - figure 2
Red meat, as only meat contains iron
Lentils, the richest source of iron in the chart
Milk, since calcium in milk builds new blood
Apple, as fruit is the best source of minerals
9.
Chen is a vegan athlete who eats no meat, fish, eggs or milk. Which food would best supply the protein he needs for muscle repair?
Olive oil salad dressing
Lentils and beans
Plain rice cakes
Fresh orange segments
10.
Think about what each person needs most. Which pairing is correct?
Runner before a race – carbohydrate from pasta
Girl with bleeding gums – iron from red meat
Man with constipation – extra butter and oil
Boy with anaemia – calcium from a glass of milk
11.
Which nutrient is needed for growth and repair?
Protein
Water only
Fat only
Starch
12.
Hannah heated four drinks with Benedict's solution in a water bath. The diagram shows the colours after 5 minutes. Which order runs from least to most reducing sugar?
Dr Dabour Hub Academy - figure 3
W, Z, X, Y (brick-red means no sugar)
Y, Z, X, W
X, Y, W, Z
Y, X, Z, W
13.
Leon says: "My sweets are full of sugar, so they give me everything I need." Which is the best response?
He is right, because sugar is used for growth and repair
He is right, as long as he also drinks plenty of water
Sugar gives no energy at all, so sweets are useless
Sugar gives energy, but he would lack other nutrients
14.
Each option pairs a food test reagent with its positive colour change. Which pairing is correct?
Iodine solution – blue to brick-red
Benedict's – orange-brown to blue-black
DCPIP – colourless to dark blue
Biuret solution – blue to purple
15.
An illness caused by a missing nutrient is called a deficiency disease. - True or false?
True
False
16.
Lack of iron in the diet can cause:
Rickets
Goitre
Scurvy
Anaemia
17.
The energy value Farah measured by burning a crisp under a tube of water was much lower than the value on the packet. What is the most likely reason?
The thermometer used up energy while it was reading
Water cannot take in any energy once it passes 30 °C
Much heat escaped to the air instead of the water
The crisp gained extra energy as it burned in the air
18.
Which statement correctly describes carbohydrate?
the tiny structure inside a cell that releases energy from glucose
the type of food that is especially good for giving us energy
what glucose is - the energy is locked inside it until it is released
the substances that react together, here glucose and oxygen
19.
Sweating helps control body temperature, which is one reason the body needs water. True or false?
False – water only moves food through the gut
True – evaporating sweat cools the body
False – body temperature is controlled by fibre
True, but water gives the energy that makes sweat
20.
Tariq is testing a portion of school pasta for starch. Which order of steps is correct?
Add iodine; heat in a water bath; look for brick-red colour
Add iodine to the food; shake with ethanol; look for cloudiness
Food on a white tile; add iodine drops; watch for blue-black
Food on a white tile; add biuret drops; look for a purple colour
21.
Fibre helps the body by:
Carrying oxygen
Building muscles
Making bones hard
Keeping food moving through the gut
22.
Vitamins and minerals are needed in large amounts because they supply most of the body's energy. True or false?
True – they are the body's main energy source
False – they are needed in small amounts
True, but only minerals such as iron give energy
False – they are needed in large amounts for fibre
23.
Nour wants to find out whether boiling destroys vitamin C in cabbage. Which plan is best?
Count the DCPIP drops needed for equal volumes of raw and boiled cabbage juice
Add iodine to raw and boiled cabbage and compare the blue-black colour
Heat raw cabbage with Benedict's solution and look for a brick-red colour
Burn raw and boiled cabbage under water and compare the temperature rise
24.
Benedict's solution will change colour with glucose even if the test tube is left at room temperature. True or false?
False – it must be heated in a water bath
True – the colour change happens straight away
True, but only if iodine solution is added first
False – it only reacts with starch, never glucose
25.
Carbohydrates give us no energy at all. - True or false?
True
False
26.
Which nutrient helps build and repair body tissues?
Fat
Protein
Carbohydrate
Fibre
27.
Water is not needed by the body because it contains no nutrients. - True or false?
True
False
28.
Mr Okafor often suffers from constipation. Using the table, which cereal would be best for him?
Bran flakes, the highest in fibre
Rice pops, the lowest in fat
Oat porridge, the highest in protein
Frosted corn, the highest in carbohydrate
29.
A person who eats plenty of cheese can still develop weak bones if they lack vitamin D. True or false?
False – calcium alone always keeps bones strong
False – vitamin D is only needed for good eyesight
True, because cheese has no calcium in it at all
True – vitamin D helps absorb calcium
30.
On a long sea voyage, a sailor develops bleeding gums. Using the table, which food would help him most?
Cheddar cheese, rich in calcium
White rice, for extra energy
Red pepper, the richest in vitamin C
Boiled potato, a starchy food
31.
Sami burned 1.0 g of each food under 20 g of water. His results are in the bar chart. Which food most likely contains the largest proportion of fat?
Dr Dabour Hub Academy - figure 4
Dried apple, as fruit sugar is the richest energy store
White bread, as starch releases the most energy per gram
Peanut, because it gave the biggest temperature rise
Potato crisp, as fried foods always hold the most fat
32.
The body's main source of energy is _____.
fibre
water
protein
carbohydrate
33.
An illness caused by a missing nutrient is called an infectious disease. - True or false?
True
False
34.
Dev added two drops of iodine solution to six foods on a spotting tile. The dark wells turned blue-black; the others stayed orange-brown. Which conclusion is supported by his results?
Dr Dabour Hub Academy - figure 5
Rice and flour contain starch; egg white does not
Apple juice and sugar solution contain starch
Potato contains glucose, as its well turned dark
Egg white contains starch but no other nutrients
35.
Children whose diet contains too little protein may develop kwashiorkor. True or false?
False – it is caused by a lack of vitamin C
False – it is caused by eating too much fat
True – kwashiorkor is a protein deficiency disease
True, but only in adults who do no exercise
36.
Rickets, in which leg bones become soft and bend, is linked to a lack of _____ in the diet.
vitamin C
iron (a mineral)
vitamin D
dietary fibre
37.
Ade tests a school meal for protein with biuret solution. He also adds biuret solution to a tube of water only. Why?
Water contains protein, so it should turn purple
It shows the negative colour to compare with
It makes the biuret solution work faster in the meal
It lets him measure the energy in the meal as well
38.
Using the table, Mei is more at risk of developing weak bones than Rashid. True or false?
False – Rashid eats the least calcium and gets least sun
True – Mei eats less calcium than all the others
True, because Mei spends more time outdoors in the sun
False – none of them are below the recommended amount
39.
Iron is needed to make haemoglobin, so a person lacking iron may feel tired because their blood carries less oxygen. True or false?
False – a lack of iron causes rickets instead
False – iron is only needed to make teeth hard
True – this deficiency disease is called anaemia
True, but iron is found only in red meat
40.
The diagram shows Farah's set-up for comparing the energy in different foods. Which labelled part is used to measure the dependent variable?
Dr Dabour Hub Academy - figure 6
Part B, which holds the fixed volume of water
Part A, which reads the water temperature
Part C, the food sample whose type is changed
Part D, the stand that keeps the tube still
41.
Aisha wants to compare how much starch is in three types of bread using iodine solution. Which variables should she keep the same?
The type of bread and the colour it turns
The brand of bread and the final colour only
The time of day and the name of each bread
The size of each sample and the number of iodine drops
42.
Gram for gram, fats release about twice as much energy as carbohydrates. True or false?
True – that is why fat makes a good energy store for the body
False – carbohydrates give twice the energy of fats
False – fats give no energy; they only insulate
True, but only for fats from animal sources
43.
Each option pairs a nutrient with a food that is a good source of it. Which pairing is correct?
Fibre – butter and cooking oil
Vitamin C – white rice and pasta
Calcium – milk, yoghurt and cheese
Protein – honey and table sugar
44.
Lack of vitamin D can cause:
Scurvy
Rickets
Obesity
Anaemia
45.
Which of these is NOT a job of water in the body?
Supplying the body with energy in kilojoules
Transporting dissolved substances in the blood
Being the liquid where cell reactions take place
Cooling the body when sweat evaporates
46.
The unlabelled foods were egg white, cheese, flour and honey. Which food number is most likely to be egg white?
Food 4, positive for protein and fat
Food 2, positive for protein only
Food 1, positive for starch only
Food 3, positive for sugar only
47.
Leila did the ethanol emulsion test on two crushed foods. The diagram shows her results. She concludes: "The food in tube Q contains no nutrients at all." True or false?
Dr Dabour Hub Academy - figure 7
False – the clear result only shows that Q contains no fat
True – a clear liquid means every nutrient is absent
True, but only if Q was also heated in a water bath
False – tube Q contains fat, and tube P does not
48.
Use Yusuf's results and energy (J) = mass of water (g) × 4.2 × temperature rise (°C). How much energy did 1.0 g of cashew transfer to the water?
4515 J, using the final temperature of 43 °C
1995 J, using the starting temperature of 19 °C
600 J, from 25 × 24 without the 4.2
2520 J, about 2.5 kJ
49.
Which term is described as: the deficiency disease caused by a lack of vitamin C?
dietary fibre
deficiency disease
scurvy
vitamin
50.
A crushed food gave a purple colour with biuret solution and a cloudy white emulsion with ethanol and water. This food contains both protein and fat. True or false?
False – purple with biuret shows starch, not protein
False – a cloudy emulsion shows sugar, not fat
True, but only the fat test can be trusted here
True – both the biuret and emulsion tests were positive
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Part of Unit 7: Nutrition, health and movement — see every lesson and quiz in this unit.
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