paper 1 revisison Flashcards
steps to mitosis
cell grows and increases sub-cellular structures
DNA replicates
1 set of chromosomes is pulled to each end of the cell
then the nucleus divides
cytoplasm and cell membranes divide
- 2 identical cells are formed
what are eukaryotic cells
cells with a true nucleus
-eg animal cells and plant cells
what are prokaryotic cells
cells without a true nucleus
-eg bacteria cells
what are features of a eukaryotic cell
always has:
- true nucleus that contains DNA
- cytoplasm
- cell membrane
what are features of a prokaryotic cells
always has:
- cytoplasm
- cell membrane
- cell wall
- DNA is in plasmids (DNA strands)
what is the nucleus
a sub-cellular structure containing DNA
what is cytoplasm
The sight of chemical reaction within a cell
what does the cell membrane do
controls what goes in and out of the cell
what is mitochondria
the sight of respiration
what do ribosomes do
protein synthesis
what do chloroplasts do
carry out the process of photosynthesis
what does a vacuole do
keeps the cell turgid
