AQA GCSE COMBINED
SCIENCE BIOLOGY - PAPER 1
1. What is the function of the nucleus? - CORRECT ANSWER -Contains DNA to
control the cell
2. What is the function of the cell membrane? - CORRECT ANSWER -Controls entry
and exit of substances
3. What is the function of the cell wall? - CORRECT ANSWER -Provides structure
and support
4. What is the function of mitochondria? - CORRECT ANSWER -Carry out
respiration to release energy
5. What is the function of ribosomes? - CORRECT ANSWER -Protein synthesis
6. What is the function of chloroplasts? - CORRECT ANSWER -Carry out
photosynthesis
7. What is the function of a vacuole? - CORRECT ANSWER -Contains cell sap
8. Define a prokaryote - CORRECT ANSWER -A cell that does not have a nucleus
9. Define a eukaryote - CORRECT ANSWER -A cell that has DNA in a nucleus
,10. Name two cell structures that are in a eukaryote but not in a prokaryote -
CORRECT ANSWER -Nucleus, mitochondria, chloroplasts
11. What is a plasmid? - CORRECT ANSWER -A small loop of DNA in bacteria
12. What is a plant cell wall made from? - CORRECT ANSWER -Cellulose
13. How is DNA stored in a bacterial cell? - CORRECT ANSWER -As a single, free-
floating loop; also on plasmids
14. What is differentiation? - CORRECT ANSWER -The process by which cells
become specialised
15. What is the equation for magnification? - CORRECT ANSWER -Magnification =
Image Size ÷ Actual Size
16. A photograph of a cell is 15mm long. It has a magnification of 1100x. What is the
actual size? - CORRECT ANSWER -0.0136mm, or 13.6µm
17. A cell is 12µm wide. It is magnified by 450 times. How big is the image? - CORRECT
ANSWER -5400µm, or 5.4mm
18. If the image of a virus is 1.2mm, and its actual size is 0.2µm, how much has it been
magnified by? - CORRECT ANSWER -6000 times
19. Convert 38500µm into mm - CORRECT ANSWER -38.5mm
20. How many µm are in 1mm? - CORRECT ANSWER -1000
, 21. Write 17400m in standard form - CORRECT ANSWER -1.74 x 10^4 m
22. Write 0.0034 in standard form - CORRECT ANSWER -3.4 x 10^-3
23. How is a sperm cell adapted for its function? - CORRECT ANSWER -It has a tail to
swim to the egg
24. How is a nerve cell adapted for its function? - CORRECT ANSWER -It has a long
axon to conduct impulses over long distances
25. How is a muscle cell adapted for its function? - CORRECT ANSWER -It can
contract to cause movement
26. How is a root hair cell adapted for its function? - CORRECT ANSWER -It has a
large surface area to increase osmosis of water
27. How is a xylem cell adapted for its function? - CORRECT ANSWER -It has hollow
ends to transport water
28. How is a phloem cell adapted for its function? - CORRECT ANSWER -It has sieve
tubes to transport sugars
29. What is a stem cell? - CORRECT ANSWER -An undifferentiated cell that can
differentiate to become any type of specialised cell
30. Where are stem cells most commonly found in animals? - CORRECT ANSWER -In
embryos and in bone marrow
SCIENCE BIOLOGY - PAPER 1
1. What is the function of the nucleus? - CORRECT ANSWER -Contains DNA to
control the cell
2. What is the function of the cell membrane? - CORRECT ANSWER -Controls entry
and exit of substances
3. What is the function of the cell wall? - CORRECT ANSWER -Provides structure
and support
4. What is the function of mitochondria? - CORRECT ANSWER -Carry out
respiration to release energy
5. What is the function of ribosomes? - CORRECT ANSWER -Protein synthesis
6. What is the function of chloroplasts? - CORRECT ANSWER -Carry out
photosynthesis
7. What is the function of a vacuole? - CORRECT ANSWER -Contains cell sap
8. Define a prokaryote - CORRECT ANSWER -A cell that does not have a nucleus
9. Define a eukaryote - CORRECT ANSWER -A cell that has DNA in a nucleus
,10. Name two cell structures that are in a eukaryote but not in a prokaryote -
CORRECT ANSWER -Nucleus, mitochondria, chloroplasts
11. What is a plasmid? - CORRECT ANSWER -A small loop of DNA in bacteria
12. What is a plant cell wall made from? - CORRECT ANSWER -Cellulose
13. How is DNA stored in a bacterial cell? - CORRECT ANSWER -As a single, free-
floating loop; also on plasmids
14. What is differentiation? - CORRECT ANSWER -The process by which cells
become specialised
15. What is the equation for magnification? - CORRECT ANSWER -Magnification =
Image Size ÷ Actual Size
16. A photograph of a cell is 15mm long. It has a magnification of 1100x. What is the
actual size? - CORRECT ANSWER -0.0136mm, or 13.6µm
17. A cell is 12µm wide. It is magnified by 450 times. How big is the image? - CORRECT
ANSWER -5400µm, or 5.4mm
18. If the image of a virus is 1.2mm, and its actual size is 0.2µm, how much has it been
magnified by? - CORRECT ANSWER -6000 times
19. Convert 38500µm into mm - CORRECT ANSWER -38.5mm
20. How many µm are in 1mm? - CORRECT ANSWER -1000
, 21. Write 17400m in standard form - CORRECT ANSWER -1.74 x 10^4 m
22. Write 0.0034 in standard form - CORRECT ANSWER -3.4 x 10^-3
23. How is a sperm cell adapted for its function? - CORRECT ANSWER -It has a tail to
swim to the egg
24. How is a nerve cell adapted for its function? - CORRECT ANSWER -It has a long
axon to conduct impulses over long distances
25. How is a muscle cell adapted for its function? - CORRECT ANSWER -It can
contract to cause movement
26. How is a root hair cell adapted for its function? - CORRECT ANSWER -It has a
large surface area to increase osmosis of water
27. How is a xylem cell adapted for its function? - CORRECT ANSWER -It has hollow
ends to transport water
28. How is a phloem cell adapted for its function? - CORRECT ANSWER -It has sieve
tubes to transport sugars
29. What is a stem cell? - CORRECT ANSWER -An undifferentiated cell that can
differentiate to become any type of specialised cell
30. Where are stem cells most commonly found in animals? - CORRECT ANSWER -In
embryos and in bone marrow
