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b= body tube
c= rough focusing knob
d= fine focusing knob
e= Low and high power objective lenses
f= stage
2a) Rough focusing knob and fine focusing knob
b) stage
bii) it should be clipped to the stage
c) to magnify the object
3a) she can adjust the mirror
b) the lowest-powered objective lens
c) the rough focusing knob
cii) she should move it down to just above the slide
d) fine focusing knob
dii) away from the slide
diii) to make sure the lens and the slide don't crash together
e) she could switch to a higher-power objective lens
CELLS
1a) nucleus
b) cell membrane
c) cell wall
d) mitochondrion
e) sap vacuole
f) cytoplasm
g) chloroplast
both cells have one cell doesn't have
cytoplasm chloroplast
cell membrane cell wall
nucleus
mitochondrion
sap vacuole
2. nucleus
3. mitochondrion
4. chloroplast= contains chlorophyll for photosynthesis
vacuole= large space filled with sap
mitochondrion where most of the reactions for aerobic respiration take place.
Cytoplasm= Jelly-like stuff where most of the reactions happen.
nucleus= Controls what the cell does.
cell membrane= Thin skin around the cell.
cell wall= Outer coating which gives support to the cell.
5a) The cells are too small to be seen by the naked eye
b) to make the parts of cells easier to see
c) check cell cytoplasm and nucleus
Leaf mesophyll cell Cytoplasm, Nucleus, Cell Wall, and vacuole
6ai) it controls what goes in and out of the cell
ii) it holds the cell together
bi) a cell wall is a rigid outer coating, but a cell membrane is just a thin skin.
ii) cellulose
7. having only one cell
bi) flagellum
ii) Eugela lives in water, so having a tail-like structure to be able to swim
CELL ORGANISATION
1a) cells-> tissues-> organ-> organism
b) yes, it is ok
2a) because there is a lot of carbon dioxide inside the cell but not a lot outside the cell
b) cell membrane
c) the oxygen molecules will move into the cell because there is a lot of oxygen outside of the cell, but there is not a lot inside of the cell
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