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Sylver
on FreezingBlue Flashcards.
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define resolution.
The ability to distinguish between 2 objects that are close together
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Define magnification.
The number of times greater an image than its object.
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Why do scientist stain samples?
Name 1 type.
- In order to see the details of the cells organelles.
- - Acetic Orcein
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Roughly how large is the following:
-Cell surface membrane
-Ribosome
-Virus
- -Cell surface membrane: 10nm wide
- -Ribosome: 20nm in diameter
- -Virus: 40-100nm in diameter
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outline function of nucleus.
To co-ordinate cell; houses genetic information.
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Outline function of nucleolus.
Makes Ribosome and RNA
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Outline structure and function of nuclear envelope.
- -Double membrane structure
- -Surrounds nucleus in eukaryote cell
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Outline structure and function of:
-Rough endoplasmic reticulum (R.E.R)
-Smooth endoplasmic reticulum (S.E.R)
- -E.R: consist of membrane bound sac called cisternae. They are continuous with outer nuclear membrane.
- -R.E.R: studded with ribosomes, transports proteins.
- -S.E.R: makes lipids the cell needs
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outline structure and function of Golgi Apparatus.
- -A stack of membrane bound flattened sac
- -Used to package and modify proteins into vesicles.
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Outline function of Ribosome.
Used to synthesis proteins in the cell.
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Outline structure and function of mitochondria.
- - Spherical/sausage shape. Inner membrane folded to form cristae. Central part called matrix.
- -A site where Adenosine triphosphate (ATP) is produced via Aerobic respiration.
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Outline structure and function of chloroplast.
- -Inner membrane is continuous and has elaborate network of flattened membrane sack called thylakoids. (they look like plates, many stacked called granum.)
- -Site of photosynthesis
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Outline function of lysosomes.
-Contain powerful enzymes used to break down materials
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Outline role of plasma membrane.
-form permeable barrier between cell and environment
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define division of labour.
system where different part perform specialised function contributing to the function of the whole.
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Outline function of cytoskeleton.
network of fibres made of proteins that are used to keep cell structure stable
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