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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

7.3 Growth Development And Health

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Growth Development And Health Checkpoint Biology quiz: free practice for Cambridge Checkpoint Biology 0893. Work through this Growth Development And Health Checkpoint Biology quiz and get instant feedback on every answer. If you get stuck, review the 6.3 Growth development and health lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 49
  • Passing grade: B+
  • Time limit:
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1.
Which statement correctly describes growth?
the changes in the body as a person grows towards being an adult
the gas in tobacco smoke that reduces the oxygen the blood can carry
the permanent increase in the size and mass of an organism
a drug that slows reaction times and damages the liver and brain
2.
Which statement correctly describes nicotine?
the addictive drug in tobacco smoke
a drug that slows reaction times and damages the liver and brain
the changes in the body as a person grows towards being an adult
a graph used to compare a child's mass or height with the expected range for their age
3.
The graph shows the average height of girls and boys from birth to age 20. Which statement is supported by the graph?
Dr Dabour Hub Academy - figure 1
Boys grow fastest of all between the ages of 5 and 8
Girls' puberty growth spurt starts about two years before boys'
Girls keep growing steadily taller until the age of 20
Both sexes grow fastest between the ages of 16 and 20
4.
In a driving-simulator study, adult volunteers pressed the brake when a hazard appeared, after drinking different amounts of alcohol. What does the graph show?
Dr Dabour Hub Academy - figure 2
Time fell by 0.32 s from 0 to 4 units: reactions sped up
Time rose by 0.82 s from 0 to 4 units: reactions slowed
Time stayed the same, so alcohol had no effect at all
Time rose by 0.32 s from 0 to 4 units: reactions slowed
5.
A hospital recorded the birth mass of babies born to mothers who smoked different amounts during pregnancy. Which explanation of the pattern is best?
Dr Dabour Hub Academy - figure 3
CO in smoke cuts the oxygen in the mother's blood, so the foetus grows less
Tar passes straight into the foetus and makes its bones heavier
Nicotine gives the foetus extra energy, so it needs less food
Smoking has no effect; lighter babies are simply born later
6.
Mia and Josh use the ruler-drop test shown in the diagram to compare reaction times. Which measurement should they record each time?
Dr Dabour Hub Academy - figure 4
The mass of the ruler before and after it falls
The height of the person who is catching the ruler
The distance the ruler falls before it is caught
The length of the whole ruler used in each trial
7.
Tariq asked 12 classmates how long they slept, then gave them a concentration test. Which is the best conclusion from his scatter graph?
Dr Dabour Hub Academy - figure 5
Sleep has no link with concentration because the points are scattered
Sleeping for 12 hours would certainly give a perfect score of 20
Students who slept 5 hours had the best concentration of all
More sleep is linked to higher scores, but only 12 students were tested
8.
Using the table, which changes happen in BOTH boys and girls during puberty?
Changes 3 and 4
Changes 1 and 6
Changes 2 and 5
Changes 1 and 2
9.
Using the table, who is likely to become breathless soonest when running for a bus, and why?
Aziz, as he has too little carbon monoxide in his blood
Beth, as nicotine stops her lungs taking in any air
Dina, as most of her haemoglobin carries CO, not oxygen
Carlos, as tar in his blood carries extra oxygen
10.
Mia did the ruler-drop test on mornings after different amounts of sleep. Which answer identifies the anomaly and gives a valid conclusion?
11 cm is anomalous; less sleep gave faster reactions
25 cm is anomalous; less sleep gave slower reactions
25 cm is anomalous; sleep had no effect on reactions
19 cm is anomalous; more sleep gave slower reactions
11.
Four students did the same step exercise. Using the table, which student is likely to be the fittest?
Zoe – her pulse reached the highest value
Omar – his recovery took a medium length of time
Sam – he had neither the highest nor lowest pulse
Kemi – her pulse rose least and recovered fastest
12.
Using the table, whose lifestyle is healthiest overall?
Bea: active, well rested, few sugary drinks, no smoking
Chidi, because he does the most exercise every week
Anil, because he has the most time left for studying
Dara, because all her habits are in the middle
13.
Mia is investigating whether sleep affects reaction time using the ruler-drop test. Which variables should she keep the same?
The hours of sleep the night before each test
The distance the ruler falls before it is caught
The ruler, the catching hand and the start position
Nothing, as long as she tests on different days
14.
Which is the best method for measuring a resting pulse rate in beats per minute?
Count wrist beats for 15 s, then divide by 4
Count your breaths for one minute while sitting
Press on the chest once and time a single beat
Count wrist beats for 15 s, then multiply by 4
15.
Scientists study the health of people who already smoke instead of doing an experiment where volunteers are made to smoke. Why?
Smokers are always easier to find than non-smokers
Making people smoke would harm them, so it is unethical
Experiments can never be used to study human health
Cigarettes contain no chemicals that could be measured
16.
Why should Josh repeat the ruler-drop test several times and find a mean?
It reduces the effect of any one odd catch
It makes each catch faster than the one before
It means the ruler no longer needs to be read
It changes the independent variable each time
17.
Which of these is an example of development rather than growth?
A child's height rising by 6 cm in a year
A baby's mass doubling in six months
The sex organs maturing during puberty
A teenager's feet becoming two sizes bigger
18.
Which hormone mainly controls the changes of puberty in boys?
Oestrogen, made by the testes
Nicotine, carried in the blood
Haemoglobin, made in the bones
Testosterone, made by the testes
19.
Which of these is NOT a benefit of regular exercise?
It protects the lungs from the tar in smoke
It strengthens the heart and other muscles
It helps to control body mass
It can improve a person's mental health
20.
Kai has a headache. His friend offers him tablets that a doctor prescribed for her mother. What is the best advice?
Take them, since all medicines are safe for everyone
Take only medicines meant for you, as directed
Take twice the dose so that they work more quickly
Take them with alcohol to help them work better
21.
Asha and Leah are both 12. Asha has started her periods but Leah has not. What is the best explanation?
Leah must have a deficiency disease caused by lack of iron
Periods only start once a girl has stopped growing
Puberty starts at different ages in different people
Asha must be much older than Leah, despite what they say
22.
Why are teenagers advised to get about 8–10 hours of sleep each night?
Sleep supports growth and memory; too little harms concentration
Sleep is when the body makes all of its energy from food eaten
Teenagers stop growing completely unless they sleep 12 hours
Sleep prevents every infectious disease during adolescence
23.
Each option pairs a substance in tobacco smoke with its effect. Which pairing is correct?
Tar – causes lung cancer and bronchitis
Nicotine – carries oxygen around the blood
Carbon monoxide – makes smoking addictive
Tar – makes the heart pump more strongly
24.
Each option pairs a lifestyle factor with an effect on the body. Which pairing is correct?
Regular exercise – weaker heart muscle
Too little sleep – poor concentration
Heavy drinking – faster reaction times
Balanced diet – causes type 2 diabetes
25.
Each option pairs a life stage with a key feature. Which pairing is correct?
Old age – the fastest growth of any stage
Childhood – periods start and ovulation begins
Foetus – learns to walk and to talk
Adolescence – sex organs mature and a growth spurt
26.
Each option pairs a term with a meaning. Which pairing is correct?
Hormone – a drug that is used to treat infections
Development – an increase in mass and nothing else
Recreational drug – taken for pleasure; may be addictive
Lifestyle – a chemical messenger carried in blood
27.
Match the term to its correct meaning: growth
the permanent increase in the size and mass of an organism
the addictive drug in tobacco smoke
a substance that changes the way the body works
the changes in the body as a person grows towards being an adult
28.
Match the term to its correct meaning: drug
a drug that slows reaction times and damages the liver and brain
the gas in tobacco smoke that reduces the oxygen the blood can carry
the permanent increase in the size and mass of an organism
a substance that changes the way the body works
29.
A permanent increase in size and mass is called _____.
respiration
excretion
digestion
growth
30.
A graph comparing a child's mass with the expected range is a _____ chart.
food
pulse
energy
growth
31.
Using the table, Nadia grew fastest between the ages of _____, during her puberty growth spurt.
15 and 16 (1 cm)
11 and 12 (8 cm)
10 and 16 (26 cm)
12 and 13 (6 cm)
32.
Puberty is the stage when the _____ mature and the body becomes able to reproduce.
lungs and heart
bones of the skull
sex organs
teeth and gums
33.
Testosterone and oestrogen each act as a _____, a chemical messenger carried in the blood that controls the changes of puberty.
a vitamin
a hormone
a mineral
a medicine
34.
The human life stages in order are: baby → child → _____ → adult → old age.
adolescence
embryo stage
foetus stage
infancy stage
35.
Nicotine is the addictive drug in tobacco smoke. - True or false?
True
False
36.
Alcohol slows reaction times and can damage the liver. - True or false?
True
False
37.
A drug is a substance that changes the way the body works. - True or false?
True
False
38.
Using the bar chart: the more cigarettes a man smokes each day, the greater his risk of dying from lung cancer. True or false?
Dr Dabour Hub Academy - figure 6
False – non-smokers have the highest death rate
True, but only for men who smoke 25 or more a day
True – the death rate rises with each group
False – the number smoked makes no difference
39.
Ali measured his resting heart rate each week while he trained. From the graph: regular exercise made his heart stronger, so it needed fewer beats per minute at rest. True or false?
Dr Dabour Hub Academy - figure 7
False – his resting heart rate rose each week
True – his resting rate fell from 78 to 66
True, but only during the first week of training
False – exercise makes the heart muscle weaker
40.
Using the table, the baby gained more mass in the first 6 months than in the second 6 months. True or false?
True – 4.5 kg compared with 1.8 kg
False – 1.8 kg compared with 4.5 kg
False – it gained equal mass in each half-year
True, but only because it was 12 months old
41.
In girls, the changes of puberty are controlled mainly by the hormone oestrogen. True or false?
False – testosterone controls puberty in girls
False – puberty is not controlled by hormones
True, but only after menstruation has stopped
True – oestrogen controls puberty in girls
42.
Emotional changes, such as mood swings, are a normal part of adolescence. True or false?
False – adolescence involves physical change only
False – mood swings only happen in old age
True – adolescence brings emotional change
True, but only in boys, not in girls
43.
Nicotine is the substance in tobacco smoke that causes lung cancer. True or false?
True – nicotine is both addictive and the cause
False – tar, not nicotine, causes lung cancer
True, but only in people who smoke cigars
False – carbon monoxide is what causes cancer
44.
Leo says: "I'm only 15, so my diet and exercise now won't affect my health when I'm older." True or false?
False – habits in youth affect later health
True – only choices made after 40 affect health
True, because teenagers cannot become overweight
False – but only smoking has any lasting effect
45.
During puberty in boys, the testes begin to make sperm. True or false?
False – sperm are made from birth onwards
False – sperm are made only in old age
True, but only once he has stopped growing
True – sperm production starts at puberty
46.
Human growth is fastest during adulthood. True or false?
True – adults grow faster than children
True, because adults eat the most food
False – it is fastest in infancy and puberty
False – it is fastest in old age
47.
Regular exercise can improve mental health as well as strengthening the heart. True or false?
True – it benefits body and mind
False – exercise only affects the muscles in the legs
False – exercise makes the heart muscle weaker
True, but only for people who are over 60
48.
Long-term heavy drinking of alcohol mainly damages the lungs. True or false?
True – alcohol coats the lungs with tar
False – it mainly damages the liver and brain
True, because alcohol contains carbon monoxide
False – heavy drinking causes no damage at all
49.
Before birth, an embryo develops into a foetus inside the uterus. True or false?
False – the foetus develops in the stomach
False – a foetus develops into an embryo
True, but it takes only about 9 weeks in total
True – the foetus develops in the uterus
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Part of Unit 7: Nutrition, health and movement — see every lesson and quiz in this unit.
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