Practical 3 - Preperation And Scientific Drawing Of A Slide Of Onion Cells Flashcards

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1
Q

What is an onion made of?

A

Swollen leaf bases separated by thin membranes of cells

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2
Q

What’s the name of the layer we removed from the onion?

A

Epidermis layer

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3
Q

What do we have to ensure with the epidermis layer?

A

Ensue it’s a single, non-folded layer

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4
Q

What do we do to the cell walls and the nucleus before looking at them under the microscope?

A

Stain them with iodine

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5
Q

What do we stain the onion with?

A

Iodine

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6
Q

What do we cut the onion with and how big?

A

A scalpel, 1cm cubed

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7
Q

What do we slice the onion on?

A

A white ceramic tile

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8
Q

How did we remove the epidermis layer from the onion?

A

With forceps

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9
Q

Which parts of the onion cells could we recognise under the microscope?

A

-Cell wall
-Nucleus
-Cytoplasm
-Vacuole

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10
Q

What’s it always important to do when drawing cells?

A

Label them!

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