biology-today_2015-03

(Nora) #1
There are several species of North American hares. The given figure shows the correlation between

4. external ear size in different species of hares and latitude.

5.

i. Explain why arctic hare has smallest external ear size?


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ii. Identify the rule, associated with given figure?


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(^) Given figure shows the protein structure of the enzyme cellulase, which is found in grass eating
animals so that they can digest the cellulose found in grass.
i. Name structure A and describe how it is formed.
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ii. State the differences between the structures of cellulase and its substrate.
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Arctic hare is adapted largely to cold
habitats.

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