BIOLOGY UNIT 1 REVISION
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- Created on: 29-04-14 09:29
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- Biology Unit 1 OCR.
- The maximum resolution for the light microscope is 200nm.
- Increasing temperature=increased kinetic energy.
- The maximum resolution for the electron microscope is 0.20nm.
- The maximum resolution for the light microscope is 200nm.
- The magnification possible with a TEM is x500,000.
- The maximum magnification possible with a SEM is about x100,000.
- The maximum resolution for the electron microscope is 0.20nm.
- The maximum resolution for the electron microscope is 0.20nm.
- TEM is better at MAGNIFICATION.
- The magnification possible with a TEM is x500,000.
- The magnification possible with a TEM is x500,000.
- Electron Microscopes are better at RESOLUTION.
- The maximum magnification possible with a SEM is about x100,000.
- The maximum magnification possible with a SEM is about x100,000.
- DIVISION OF LABOUR is the specific role of each organelle within a cell.
- Biology Unit 1 OCR.
- Increasing temperature=increased kinetic energy.
- Biology Unit 1 OCR.
- Microtubules may be used to move a microorganism or to waft a liquid past the cell.
- DIVISION OF LABOUR is the specific role of each organelle within a cell.
- The detail inside of the cells revealed by the electron microscope is called the cell's ultrastructure.
- ROUGH ER - transports proteins that were made by the attached ribosomes.
- DIVISION OF LABOUR is the specific role of each organelle within a cell.
- The instructions to make the hormone are in the DNA in the nucleus.
- The specific instruction to make the hormone is known as the gene for that hormone. A gene is on the chromosome.
- The nucleus copies the instructions in the DNA into a molecule of mRNA.
- The specific instruction to make the hormone is known as the gene for that hormone. A gene is on the chromosome.
- The mRNA molecule leaves the nucleus through a nucleur pre and attachesto a ribosome.
- The nucleus copies the instructions in the DNA into a molecule of mRNA.
- The Golgi Apparatus packages the protein and may also modify it so that it is ready for release. The protein is now packaged into a vesicle and moved to the cell surface membrane, where it is secreted outside.
- CHANNEL PROTEINS
- Somemolecules and ions that are too large and too hydrophilic to pass directly through the phospholipid bilayer enter and leave cells using these protein channels.
- Allow the movement of some substances across the membrane.
- CHANNEL PROTEINS
- Somemolecules and ions that are too large and too hydrophilic to pass directly through the phospholipid bilayer enter and leave cells using these protein channels.
- CHANNEL PROTEINS
- CARRIER PROTEINS
- USE ATP.
- E.G Root hair cells.
- Move substances ACROSS the membrane.
- CARRIER PROTEINS
- USE ATP.
- E.G Root hair cells.
- CARRIER PROTEINS
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