Biology Unit 4 (AQA)

Questions from every topic in Unit 4.

  • Created by: Lauren
  • Created on: 11-01-12 19:57
A community is:
The biotic part of an ecosystem.
1 of 12
Why does the Lincoln Peterson index only produce a very rough guess of population size?
The population size may change between capturing and recapturing.
2 of 12
The niche of a population is:
Is genetically determined,
3 of 12
The first pioneers of a lithosere are:
Lichens
4 of 12
Dicotyledons are:
Broad leafed plants
5 of 12
A carbon sink is:
An ecosystem that accumulates more carbon as biomass than it releases as carbon dioxide over time.
6 of 12
Saprobionts secrete:
Enzymes
7 of 12
Net productivity=
Gross productivity - Losses due to respiration and heat.
8 of 12
A disadvantage of organic fertilisers is
They may contain unwanted substances.
9 of 12
Eutrophication does NOT lead to an increase in:
Sewage
10 of 12
The Krebs Cycle takes place in:
Mitachondrial matrix
11 of 12
Ribulose Biphosphate contains how many carbons?
5
12 of 12

Other cards in this set

Card 2

Front

Why does the Lincoln Peterson index only produce a very rough guess of population size?

Back

The population size may change between capturing and recapturing.

Card 3

Front

The niche of a population is:

Back

Preview of the front of card 3

Card 4

Front

The first pioneers of a lithosere are:

Back

Preview of the front of card 4

Card 5

Front

Dicotyledons are:

Back

Preview of the front of card 5
View more cards

Comments

Joanna Sawczyn

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Dicotyledons are not predators, they are broad leafed plants.

Apart from that question, the rest of the quiz was fun.

Thanks!

Lauren

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Oh dear, that's embarrassing, haha. Must have clicked the wrong one as the right answer. Will change it right away.

Danny Kendall

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I swear  Eutrophication does NOT lead to an increase in oxygen as the decomposition of Algae that have bloomed uses up said oxygen hence a decrease in O2

Ali Mohamed-Ali

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What Danny said is right, it will increas anerobic conditions... so less oxygen?

Lauren

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It does lead to a temporary increase when the algae are thriving, before they all die off, the question could be phrased better. However, I have now removed the oxygen option.

Former Member

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This is a good start, but not finished

Sarah

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The krebs cycle does take place in the inner mitochondrial membrane?

michael hamer

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This is sick as balls

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