BY1 WJEC Cell structure and organisation

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  • Created by: rosie25
  • Created on: 23-03-14 20:42
Nucleus function
To control cell activities and retain the chromosomes
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Nucleus structure
Bound by nuclear membrane (pores for passage), has a nucleoplasm (contains chromatin) and a nucleolus (manufactures RNA, makes ribosomes)
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Mitochondria function
Site of aerobic respiration. Produces energy-carrier molecule ATP
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Mitochondria structure
double membrane- separated by fluid filled inter-membrane space. Folded to form extensions called cristae
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endoplasmic reticulum structure
Parallel double membrane forming flattened sacs. Fluid-filled spaces called cistern. Connected with nucleus
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Endoplasmic reticulum function
Transport throughout cell. ROUGH- transporting proteins made by ribosomes. SMOOTH- synthesis and transport of lipids
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Ribosome function
Important in protein synthesis
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Ribosome structure
Manufactured in nucleolus from ribosomal RNA and protein
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Golgi body function
Proteins transported in vesicles and modified & packaged in golgi body. Also produce secretory enzymes and secreting carbohydrates
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Golgi body structure
Rough ER pinched off at the ends
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Lysosome function
Contain and isolate potentially harmful enzymes. Also destroy worn out organelles in cell and digest material that has been taken into cell
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Lysosome structure
Small vacuoles formed when portions of golgi body are pinched off.
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Centriole function
During cell function they divide and move to opposite poles where they synthesise the microtubules of the spindle
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Centriole structure
Located outside nucleus in region known as the centrosome
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Chloroplast function
Contains chlorophyll used in photosynthesis
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Chloroplast structure
Double plasma membrane, stroma fluid-filled and contains ribosomes, lipids, DNA.
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Vacuole function
Storage site for chemicals e.g. glucose
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Vacuole structure
Fluid-filled sac bounded by a membrane-tonoplast.
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Order of level of organisation
Tissues, organs, systems, organisms
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Other cards in this set

Card 2

Front

Bound by nuclear membrane (pores for passage), has a nucleoplasm (contains chromatin) and a nucleolus (manufactures RNA, makes ribosomes)

Back

Nucleus structure

Card 3

Front

Site of aerobic respiration. Produces energy-carrier molecule ATP

Back

Preview of the back of card 3

Card 4

Front

double membrane- separated by fluid filled inter-membrane space. Folded to form extensions called cristae

Back

Preview of the back of card 4

Card 5

Front

Parallel double membrane forming flattened sacs. Fluid-filled spaces called cistern. Connected with nucleus

Back

Preview of the back of card 5
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