9th grade human body and health
9th grade (Year 10 in England) · 16 questions · Common Core: NGSS.HS-LS1-2, NGSS.HS-LS1-7, NGSS.SEP 7, NGSS.HS-LS1-3 · England: KS4 Combined Science: Health, disease and the development of medicines, GCSE Combined Science: Bioenergetics, GCSE Combined Science: Infection and response
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Date
Score/ 16
Question 1
Which type of respiration does this describe: it needs oxygen?
- A. aerobic only
- B. anaerobic only
- C. both
Question 2
Which is the balanced symbol equation for aerobic respiration?
- A. 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
- B. C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
- C. C₆H₁₂O₆ + 6CO₂ → 6O₂ + 6H₂O
- D. C₆H₁₂O₆ + O₂ → CO₂ + H₂O
Question 3
In one region, measles vaccination coverage rose from 60 % to 94 %. Yearly measles cases fell from 61 to 7. Which conclusion is best supported?
- A. The data prove that measles has disappeared everywhere.
- B. The vaccine made measles cases rise.
- C. Vaccination has no link with the number of cases.
- D. Cases fell sharply after vaccination rose, which supports the vaccine reducing measles.
Question 4
A cell respires 3 molecules of glucose aerobically. Using C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O, how many molecules of carbon dioxide are produced?
Answer
Question 5
After exercise, a student counts 15 pulse beats in 20 seconds. What is the heart rate in beats per minute?
Answerbpm
Question 6
How does a vaccine protect you?
- A. It is an antibiotic.
- B. It makes you ill so you learn to avoid germs.
- C. It trains white blood cells to make antibodies quickly if the real pathogen arrives.
- D. It kills every bacterium in your body.
Question 7
Why can a virus not reproduce on its own?
- A. It only reproduces in water
- B. It is too big
- C. It must use the machinery inside a host cell
- D. It has no genetic material
Question 8
What type of pathogen causes athlete's foot?
- A. virus
- B. bacterium
- C. fungus
- D. protist
Question 9
Under ideal conditions a bacterium divides every 20 minutes. A drop of milk starts with 2 bacteria. How many bacteria will there be after 2 hours?
Answer
Question 10
During exercise an athlete's cardiac output is 12 dm³ per minute and their stroke volume is 100 cm³. What is their heart rate, in beats per minute? (1 dm³ = 1000 cm³)
Answerbpm
Question 11
What type of pathogen causes tobacco mosaic disease in plants?
- A. virus
- B. bacterium
- C. fungus
- D. protist
Question 12
Which type of medicine is described: paracetamol or ibuprofen?
- A. vaccine
- B. antibiotic
- C. painkiller
Question 13
A person's stroke volume is 90 cm³ and their heart rate is 65 beats per minute. What is their cardiac output, in cm³ per minute?
Answercm³/min
Question 14
Disease: which statement is NOT true?
- A. Vaccines contain antibiotics.
- B. Heart disease is a non-communicable disease.
- C. Some bacteria have become resistant to antibiotics.
- D. Mosquitoes spread malaria.
Question 15
What is herd immunity?
- A. When so many people are immune that a disease cannot spread easily, protecting the unvaccinated
- B. When one person is immune to every disease
- C. When antibiotics are added to water
- D. When animals in a herd are vaccinated
Question 16
Which type of respiration does this describe: it produces lactic acid in muscles?
- A. aerobic only
- B. anaerobic only
- C. both
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