AQA GCSE BIOLOGY HIGHER TIER 1H
EXAMINATION TEST 2026 COMPLETE
QUESTIONS AND VERIFIED ANSWERS
◉ The reabsorption of glucose in the kidney tubules. Answer:
Example of active transport in humans
◉ A solution that has the same concentration as cells and blood.
Answer: Isotonic
◉ The lungs are ventilated. Answer: How is a steep concentration
gradient maintained in the lungs
◉ The intercostal muscles contract,
The ribcage moves up and out,
The diaphragm flattens,
The volume of the thorax increase,
The pressure in the thorax decreases so air is drawn in,. Answer: 5
steps involved in breathing in
◉ Damaged alveoli (the surface area for gas exchange is reduced),
Narrowed tubes leading to the lungs (less air is moved through
them), Paralysis (the muscles will not pull the ribcage up and out).
, Answer: 3 reasons why someone cannot get enough oxygen into the
bloodstream
◉ People with polio who were paralysed. Answer: What was the
'iron lung' originally developed for?
◉ Air is pumped out of the cylinder creating a negative pressure
(vacuum) which causes air to be forced in to the lungs. Answer: How
does the 'iron lung' work?
◉ Smaller, easier to manage, can be linked to computers for control.
Answer: 3 advantages of positive pressure aids
◉ The rate of respiration is more than the rate of photosynthesis.
Answer: More carbon dioxide diffusing out of the stomata means
that...
◉ The rate of photosynthesis is more than the rate of respiration.
Answer: More oxygen diffusing out of the stomata means that...
◉ Flat, thin, internal air spaces. Answer: 3 ways leaves are
specialised for diffusion
EXAMINATION TEST 2026 COMPLETE
QUESTIONS AND VERIFIED ANSWERS
◉ The reabsorption of glucose in the kidney tubules. Answer:
Example of active transport in humans
◉ A solution that has the same concentration as cells and blood.
Answer: Isotonic
◉ The lungs are ventilated. Answer: How is a steep concentration
gradient maintained in the lungs
◉ The intercostal muscles contract,
The ribcage moves up and out,
The diaphragm flattens,
The volume of the thorax increase,
The pressure in the thorax decreases so air is drawn in,. Answer: 5
steps involved in breathing in
◉ Damaged alveoli (the surface area for gas exchange is reduced),
Narrowed tubes leading to the lungs (less air is moved through
them), Paralysis (the muscles will not pull the ribcage up and out).
, Answer: 3 reasons why someone cannot get enough oxygen into the
bloodstream
◉ People with polio who were paralysed. Answer: What was the
'iron lung' originally developed for?
◉ Air is pumped out of the cylinder creating a negative pressure
(vacuum) which causes air to be forced in to the lungs. Answer: How
does the 'iron lung' work?
◉ Smaller, easier to manage, can be linked to computers for control.
Answer: 3 advantages of positive pressure aids
◉ The rate of respiration is more than the rate of photosynthesis.
Answer: More carbon dioxide diffusing out of the stomata means
that...
◉ The rate of photosynthesis is more than the rate of respiration.
Answer: More oxygen diffusing out of the stomata means that...
◉ Flat, thin, internal air spaces. Answer: 3 ways leaves are
specialised for diffusion
