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Question
How did Ebright get the idea of his new theory about cell life?
Solution
In an experiment with a group of butterflies, Richard Ebright reared the eggs of female monarch butterflies. He also investigated the virus that caused an illness that wiped off all monarch caterpillars. Additionally, he looked for commonalities between Viceroy and Monarch butterflies. He was able to develop a novel explanation for the existence of cells because of his investigation of insect hormones.
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Read the given extract and answer the following questions.
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The question he tried to answer was simple: What is the purpose of the twelve tiny gold spots on a monarch pupa? “Everyone assumed the spots were just ornamental,” Ebright said. To find the answer, Ebright and another excellent science student first had to build a device that showed that the spots were producing a hormone necessary for the butterfly’s full development. This project won Ebright first place in the county fair and entry into the International Science and Engineering Fair. There he won third place for zoology. He also got a chance to work during the summer at the entomology laboratory of the Walter Reed Army Institute of Research. |
i. State any one inference about Dr Urquhart from the given context: (1)
Everyone assumed the spots were just ornamental,” Ebright said.
“But Dr Urquhart didn’t believe it.”
ii. State TRUE or FALSE. (1)
None of the terms (a) -(d) below, can be applied to the question - What is the purpose of the twelve tiny gold spots on a monarch pupa?
- A hypothesis - a proposed explanation for a phenomenon
- An assumption - something that is taken for granted or assumed to be true without proof
- A premise - a proposition that forms the basis of an argument
- A theory - a well-substantiated explanation for a natural phenomenon
iii. Ebright's approach towards finding the purpose of the gold spots on a monarch pupa was highly effective. Elaborate in about 40 words with reference to the extract. (2)
iv. Which phrase would correctly substitute 'a chance' in the given sentence from the extract. (1)
He also got a chance to work during the summer at the entomology laboratory of the Walter Reed Army Institute of Research.
