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Cells obtained from an organism were hom...

Cells obtained from an organism were homogenised and centrifuged. A test indicated that the cells contained glycogen. It you were asked to find out as quickly as possible whether the cells were from a plant or an animal, you would

A

Examine the centrifuge for presence of extracts of centrioles

B

Answer immediately that the cells were from an animal source

C

Examine the centrifuge for the presence of extracts of chloroplasts

D

Answer immediately that the cells were from a plant source

Text Solution

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The correct Answer is:
To determine whether the cells obtained from an organism were from a plant or an animal based on the presence of glycogen, follow these steps: ### Step-by-Step Solution: 1. **Understand the Context**: The cells obtained were homogenized and centrifuged, and a test indicated that they contained glycogen. 2. **Identify the Key Information**: The presence of glycogen is crucial. Glycogen is a polysaccharide that serves as a form of energy storage in animals. 3. **Recall Storage Compounds**: In plants, the primary storage carbohydrate is starch, while in animals, it is glycogen. This distinction is essential for identifying the source of the cells. 4. **Make a Conclusion**: Since glycogen is present in the cells, we can conclude that the cells are from an animal source, as plants do not store energy in the form of glycogen. 5. **Select the Appropriate Option**: Based on the conclusion, the correct action would be to examine the centrifuge for the presence of extracts of centrioles, which would indicate that the cells are from an animal source. ### Final Answer: The cells are from an animal source because they contain glycogen. ---
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