Cell Biology
- Created by: Katie_04
- Created on: 28-04-19 13:51
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- Cell Biology
- Cell Structure
- All cells have structures (sub-cellular structures)
- Animal Cell;
- *nucleus *cytoplasm *cell membrane *mitochondria *ribosomes
- Prokaryotic cells = bacteria cells
- Eukaryotic cells = plant cells, animal cells + fungal cells
- Animal Cell;
- All cells have structures (sub-cellular structures)
- Transportation
- Osmosis
- Water from dilute solution moves to concentrated one. Only works through a partially permeable membrane
- Diffusion
- Movement of particles from a high concentration to a low concentration
- Effecting factors include: *concentration gradient * temperature *surface area
- Examples; *gas exchange *digestion *excretion in kidneys
- Movement of particles from a high concentration to a low concentration
- Active transport
- Substances move against concentration gradient. Requires energy from respiration
- Osmosis
- Cell Division
- Chromosomes carry genes. Humans have 23 pairs
- Mitosis
- Cell divides into two identical cells
- 1. One set of chromosomes is pulled to each end of the cell 2. Nucleus divides 3. Cytoplasm and cell membranes divide to form two identical cells
- Stem cells
- Stem cells are undifferentiated. Form different types of cells. Can be found in bone marrow and embryos
- Cell Structure
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