GCSE BIOLOGY
1. prokaryote a cell that doesn't have a nucleus
2. eukaryote a cell that has a nucleus
3. nucleus contains DNA and controls cell divi-
sion and chemical reactions
4. cytoplasm where chemical reactions take place
5. cell membrane holds the cell together and controls
what enters and leaves the cell
6. ribosomes the site of protein synthesis
7. mitochondria where aerobic respiration takes place
and energy is released
8. cell wall keeps cell rigid and made from cellu-
lose
9. chloroplast where photosynthesis occurs and
contains chlorophyll
10. differentiation the process by which cells change to
specialise for its job
11. stem cells are... undifferentiated
, GCSE BIOLOGY
12. diploid a cell that has a full set of chromo-
somes
13. haploid a cell that has half the number of
chromosomes
14. gametes sex cells
15. sexual reproduction needs 2 parents (produces a varia-
tion of offspring)
16. asexual reproduction only needs one parent (produces
identical offspring)
17. diffusion process by which molecules move
from an area of high concentration
to an area of low concentration (of a
substance)
18. osmosis the passage of water from an area
of high concentration to an area of
low concentration (through a partially
permeable membrane)
19. active transport a process that transports molecules
across a cell membrane from an area
of low concentration to an area of
high concentration
20. tissue group of specialized cells carrying
out the same function
21. organ group of different tissues working to-
gether
22. oesophagus long tube that pushes down swal-
lowed food
23. stomach churns food with muscular walls and
produces protease
1. prokaryote a cell that doesn't have a nucleus
2. eukaryote a cell that has a nucleus
3. nucleus contains DNA and controls cell divi-
sion and chemical reactions
4. cytoplasm where chemical reactions take place
5. cell membrane holds the cell together and controls
what enters and leaves the cell
6. ribosomes the site of protein synthesis
7. mitochondria where aerobic respiration takes place
and energy is released
8. cell wall keeps cell rigid and made from cellu-
lose
9. chloroplast where photosynthesis occurs and
contains chlorophyll
10. differentiation the process by which cells change to
specialise for its job
11. stem cells are... undifferentiated
, GCSE BIOLOGY
12. diploid a cell that has a full set of chromo-
somes
13. haploid a cell that has half the number of
chromosomes
14. gametes sex cells
15. sexual reproduction needs 2 parents (produces a varia-
tion of offspring)
16. asexual reproduction only needs one parent (produces
identical offspring)
17. diffusion process by which molecules move
from an area of high concentration
to an area of low concentration (of a
substance)
18. osmosis the passage of water from an area
of high concentration to an area of
low concentration (through a partially
permeable membrane)
19. active transport a process that transports molecules
across a cell membrane from an area
of low concentration to an area of
high concentration
20. tissue group of specialized cells carrying
out the same function
21. organ group of different tissues working to-
gether
22. oesophagus long tube that pushes down swal-
lowed food
23. stomach churns food with muscular walls and
produces protease
