AS OCR Biology - Unit 1 (Cells, Exchange and Transport)

Test on Biology Unit 1 (Cells). Based on all the difficult questions from the past papers (2009-2011)

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  • Created by: Vanita
  • Created on: 02-04-12 16:49
Why can organelles sometimes vary in shape under a microscope slide?
They have been cut in different planes
1 of 15
Stem cells are...
not differentiated
2 of 15
A source is...
where sugars are loaded into phloem
3 of 15
In a colorimeter, pigment...
absorbs light
4 of 15
Genetic material stored in eukaryotic cells is associated with...
histones
5 of 15
Eukaryotic cells are [what] in diameter?
20-40um
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Meoisis produces...
haploid cells
7 of 15
Tissue is...
a collection of cells of one or more types
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A potometer needs a [what] before it can be used?
scale
9 of 15
High water vapour potential in the air can...
decrease transpiration rates
10 of 15
TEM allow smaller organelles to be seen, such as:
RER
11 of 15
Mitochondria in guard cells generate ATP for...
active transport
12 of 15
How is plant cell division different from animal cell division?
Cytokinesis starts from the middle of the cell in plants
13 of 15
What is the resolution of a light microscope?
50-200nm
14 of 15
What is the resolution of a TEM?
0.05-1nm
15 of 15

Other cards in this set

Card 2

Front

Stem cells are...

Back

not differentiated

Card 3

Front

A source is...

Back

Preview of the front of card 3

Card 4

Front

In a colorimeter, pigment...

Back

Preview of the front of card 4

Card 5

Front

Genetic material stored in eukaryotic cells is associated with...

Back

Preview of the front of card 5
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Comments

Sky

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This is a great way to see your basic knowledge, especially for retakes! Thanks for posting this :)

AtomicBecca

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80% :P I know i need to practise resolution and size of cells, thanks!

Ria Hill

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Thanks :) Really helpful to see what my weaker areas are

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