MCQ
Who first discovered nucleus in cell in 1831?
- ARobert Hooke.
- BRobert Brown.
- CAltmann.
- DSwanson.
Explanation:
The nucleus was discovered by Robert Brown while he was working on orchids, under a microscope and he observed an opaque area, which he called the areola or nucleus. It is a site for the genetic material.
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X + Y → P
X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct?