AQA A2 Biology: Unit 4 crossword

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The stage of photosynthesis where ADP, NADP and Glucose are formed.
calvin cycle
1 of 22
The role of an organism within it's comunity
niche
2 of 22
The production of ATP without the use of oxygen. In animals, lactate is formed. In plants and yeast, ethanol is formed.
anaerobic respiration
3 of 22
A change in an ecosystem, overtime, of the species that occupy it due to a change in abiotic factors
succession
4 of 22
A species that can colonise bare rock or ground.
pioneer
5 of 22
A square piece of equipment that can be used to estimate population density and frequency
quadrat
6 of 22
succession that occurs when soil is already present, for example after a forest fire.
secondary succession
7 of 22
A pyramid that is ALWAYS pyramid shaped.
pyramid of energy
8 of 22
The number of individuals of one species.
population
9 of 22
The first stage of respiration
glycolysis
10 of 22
This will be low in a hostile environment.
biodiversity
11 of 22
The process of converting ammonium compounds into nitrates, then nitrites.
nitrification
12 of 22
A pyramid that shows the number of individuals in each trophic level
pyramid of numbers
13 of 22
adenosine triphosphate
ATP
14 of 22
The effect of fertilisers running into aquatic ecosystems, often with devastating effects.
Eutrophication
15 of 22
In anaerobic respiration, this substance accepts the Hydrogen to form lactic acid.
Pyruvate
16 of 22
A build up of waste from pesticides, which travels along the food chain and is harmful to predators at the top.
bioaccumulation
17 of 22
The process that converts fossil fuels back into atmospheric CO2.
combustion
18 of 22
A method of using either a pathogen, predator or parasite to control a pest.
biological control
19 of 22
When both organisms benefit from a relationship between them, it's called a __________ relationship.
symbiotic
20 of 22
The final electron acceptor of respiration
oxygen
21 of 22
The act of splitting water using light.
photolysis
22 of 22

Other cards in this set

Card 2

Front

The role of an organism within it's comunity

Back

niche

Card 3

Front

The production of ATP without the use of oxygen. In animals, lactate is formed. In plants and yeast, ethanol is formed.

Back

Preview of the front of card 3

Card 4

Front

A change in an ecosystem, overtime, of the species that occupy it due to a change in abiotic factors

Back

Preview of the front of card 4

Card 5

Front

A species that can colonise bare rock or ground.

Back

Preview of the front of card 5
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