AQA GCSE Biology Paper 1
Study online at https://quizlet.com/_ddxkj7
1. Job of chloroplast Light energy absorbed for photosynthesis
2. Job of nucleus Controls activity of cell
3. Job of mitochon- Respiration to release energy
dria
4. Job of cell mem- Controls substances in and out of the cell
brane
5. What do plant cells chloroplast, cell wall, large vacuole
have that animal
cells don't?
6. Eukaryotic cells Part of larger organism
Plant, animal and fungi cells
Have nucleus
7. Prokaryotic cells Single cell organisms
Bacteria
Genetic material stores in single loop of DNA
Most roles done in cytoplasm
No nucleus
8. Light microscopes Allows scientists to see cells and other living organisms
Some sub-cellular organisms too small to be seen
9. Electron micro- Use beams of electrons, rather than light, to produce
scopes images
Only on non living
Too expensive
Allows better resolution
10. Magnification magnification = image size/actual size
equation
11. Magnification trian-
gle
1/9
, AQA GCSE Biology Paper 1
Study online at https://quizlet.com/_ddxkj7
12. Sub millimetre size M->MM->¼
M->NM x1000
equations
13. Average cell size Plant - 0.1 mm
Animal - 0.2 mm
14. How are root hair Has a large surface area to absorb more water and
cells specialised? mineral ions
15. Mitosis -One set of chromosomes pulled to each end of the cell
-Nucleus divides
-Cytoplasm and cell membrane divide to form two iden-
tical cells
16. The cell cycle -Each cell grows and makes new sub-cellular structures
-DNA copied and new chromosomes made
-Mitosis
-Repeat
17. How many chromo- 46 (23 pairs)
somes to humans
have?
18. Binary fission -Type of cell division bacteria do
-Multiply every 20 minutes if nutrients and suitable tem-
perature
19. Culturing bacteria Growing bacteria in nutrient broth solution
20. Bacteria growth
graph
21. Bacteria growth -Lag phase, don't see reproduction as so small
graph explained -Exponential rapid increase, birth rate is higher than
death rate, high nutrients
-Stationary phase, death and birth equal, nutrients start
to run out
2/9
Study online at https://quizlet.com/_ddxkj7
1. Job of chloroplast Light energy absorbed for photosynthesis
2. Job of nucleus Controls activity of cell
3. Job of mitochon- Respiration to release energy
dria
4. Job of cell mem- Controls substances in and out of the cell
brane
5. What do plant cells chloroplast, cell wall, large vacuole
have that animal
cells don't?
6. Eukaryotic cells Part of larger organism
Plant, animal and fungi cells
Have nucleus
7. Prokaryotic cells Single cell organisms
Bacteria
Genetic material stores in single loop of DNA
Most roles done in cytoplasm
No nucleus
8. Light microscopes Allows scientists to see cells and other living organisms
Some sub-cellular organisms too small to be seen
9. Electron micro- Use beams of electrons, rather than light, to produce
scopes images
Only on non living
Too expensive
Allows better resolution
10. Magnification magnification = image size/actual size
equation
11. Magnification trian-
gle
1/9
, AQA GCSE Biology Paper 1
Study online at https://quizlet.com/_ddxkj7
12. Sub millimetre size M->MM->¼
M->NM x1000
equations
13. Average cell size Plant - 0.1 mm
Animal - 0.2 mm
14. How are root hair Has a large surface area to absorb more water and
cells specialised? mineral ions
15. Mitosis -One set of chromosomes pulled to each end of the cell
-Nucleus divides
-Cytoplasm and cell membrane divide to form two iden-
tical cells
16. The cell cycle -Each cell grows and makes new sub-cellular structures
-DNA copied and new chromosomes made
-Mitosis
-Repeat
17. How many chromo- 46 (23 pairs)
somes to humans
have?
18. Binary fission -Type of cell division bacteria do
-Multiply every 20 minutes if nutrients and suitable tem-
perature
19. Culturing bacteria Growing bacteria in nutrient broth solution
20. Bacteria growth
graph
21. Bacteria growth -Lag phase, don't see reproduction as so small
graph explained -Exponential rapid increase, birth rate is higher than
death rate, high nutrients
-Stationary phase, death and birth equal, nutrients start
to run out
2/9
