Cell Structure

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Page 11 Application

1a) mitochrondria

b) golgi apparatus

c) chloroplast

d) cilia

2a) nucleolus

b) cell wall

c) image B as it has a cell wall and vacuole

Page 12 Practice

1) a- cell wall b- cytoplasm c- mitochondria d- nucleus e- chloroplast f- vacuole g- plasma membrane h- ribosome

2)vacuole, cell wall and chloroplast

3) make DNA

4) digest invading cells

5) RER contains ribosomes attached

6) synthesise and process lipids

7) golgi apparatus

8) centrioles

Page 14 Application

1) flattened sacs, spread out

2) proteins may not get packaged to be transported around cell

3) cells shape may be altered as a result and organells/materials may not get transported around the cell

Page 14 Fact recall

1) ribosomes re the site where proteins are made, RER folds and processes proteins that have been made on ribosomes

2) movement of organelles in cell, strength and stability of cell maintaining shape, keep organelles in position

Page 15 Fact recall

1) P - DNA is circilar, small cells of 0.2 micrometres, no membrane bound organelles E - linear DNA, larger cells 2-200 micrometres, many membrane bound organelles

2) contain robosomes

Page 19 Application

1) a - light

b - tem

c - light

d - SEM

e - TEM

f - SEM

2) TEM as you can see the internal structure of organelles and black and white micrographs can be produced

Page 20 Fact recall

1) length of image/length of specimen

2) magnification is how many times bigger an image is than the actual specimen and resolution is how well two close together objects can be distinguished

3) by using electromagnets to focus a beam of light through the specimen to produce an image

4) by focusing a beam of electrons through the specimen to produce a micrograph

5a) x 1500

b) more than x100000

c) less than x100000

6) TEM

7) TEM

8) as when light passes through the object, sometimes the object is completely transparent so the light passes straight through

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