Term
| How could you speed up photosynthesis? |
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Definition
| Light intensity, temperature, CO² concentration, water, and minerals. |
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Term
| What is a limiting factor? |
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Definition
| The one variable which can be increased in order zo increase the rate of reaction. |
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Term
| How do you 'measure photosynthesis'? |
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Definition
| By calculating the rate of photosynthesis. |
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Term
| What would be writen in the axes of a rate of photosynthesis graph? |
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Definition
| On the y axis the rate of photosynthesis, on the x axis the limiting factor. |
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Term
| Say the steps of photosynthesis. |
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Definition
1.Solar radiation enters the leaf
2. Chlorophyll absorves solar radiation
3. ATP ( energy ) is made
4. Water is split up
5. CO² enters the plant through the stoma
6. Glucose is made |
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Term
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Definition
| Enzymes are biological catalists. |
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Term
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Definition
| Where long chains are folded to produce a special shape. |
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Term
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Definition
| Molecules that fit into the active site and reaction takes place. |
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Term
| In a graph, when its a substrate considered a limiting factor? |
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Definition
| When the rate of reaction increases |
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Term
| What happens if in a graph, the line keeps straight |
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Definition
| the substrate is not a limiting factor so the rate is constant |
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Term
| What does DNA stands for? |
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Definition
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Term
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Definition
| Its a very long, thin, chemical molecule that forms chromosomes and genes. |
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Term
| Where is DNA usually found? |
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Definition
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Term
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Definition
| Because it contains our genome ( our complete collection of inherited information ) |
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Term
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Definition
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Term
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Definition
| Fossils are the remains of dead organism. |
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Term
| Where do you find fossils and how can you find out how old they are? |
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Definition
| Fossils are preserved in the earth's crust and we can find out how old they are by measuring the radio activity of the rock. |
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Term
| What are the 4 things fossils show people? |
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Definition
1. That he the variety of life in earth did not come up all at once.
2.The the first life was in water
3. As a new type of animal evolved, the older ones declined,often becoming extinct.
4.Fossils give people clues as to how animals evolved. |
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Term
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Definition
| Animals produce a large no. of offspring, because most f the wont survive. |
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Term
| Give reasions why descendant often dont survive. |
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Definition
| The descendatns might be eaten, or there will be far too much competition for food, or too many predatore, or there is a disease, or climate change, or a drought. |
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Term
| Explain survival of the fittest. |
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Definition
| In general, the best adapted animals survive to breed, passing on their characteristics to their offspring. Therefore the next generation will have a larger proportion of the well adapted individuals. |
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Term
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Definition
| it is the gradual change in the features or characteristics of a species. |
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Term
| What was darwins theory of natural selection? |
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Definition
Organisms produce large numbers of offspring.
There is variation between individuals.
There is a struggle for existence.
Organisms with useful characteristics are more likely to survive and pass them to their next generation. |
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Term
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Definition
| Having 2 alleles the same |
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Term
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Definition
| Having 2 different alleles. |
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Term
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Definition
| The characteristics your alleles give you |
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Term
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Definition
| The characteristics alleles give you. |
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Term
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Definition
| different forms of the same gene |
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Term
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Definition
| When heterozygous, the dominant allele supresses the dominant one. |
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Term
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Definition
| The weaker allele that is hidden by the dominant ones. |
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Term
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Definition
| Its to have 2 copies of the same chromosome. |
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Term
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Definition
| The process by which sex cells are separation halving the number of chromosomes in one cell. |
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Term
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Definition
| Heterozygous who dont have a disease but have a recessive alele of the disease and pass it to their chidren |
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