Read the following passage and answer the items that follow Your answer to these items should b...........

English Comprehension Reading Comprehension (C)

Read the following passage and answer the items that follow. Your answer to these items should be based on the passages only.

Passage

Researchers were able to use stem cells to gauge the neurotoxic effects of the environmental pollutant Bisphenol A (BPA). They used a combination of biochemical and cell-based assays to examines the gene expression profile during the differentiation of mouse embryonic stem cells upon treatment with BPA, a compound known to cause heart diseases, diabetes, and developmental abnormalities in humans. They were able to detect and measure BPA toxicity towards the proper specification of primary germ

layers, such as endoderm and ectoderm, and the establishment of neural progenitor cells.

Q. On the basis of the passage given above, the following assumptions have been made:

1. BPA may alter embryonic development in vivo.

2. Biochemical and cell-based assays are useful in finding out treatments for pollutioninduced diseases.

3. Embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants.

Which of the above assumptions are valid?

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Complete-Test, Previous year (2021)

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1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

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Explanation:

Statement 1 is correct: It can be assumed from the passage that the Bisphenol A (BPA). may alter embryonic development in vivo from the line " mouse embryonic stem cells upon treatment with BPA, a compound known to cause heart diseases, diabetes, and developmental abnormalities in humans".
Statement 2 is incorrect: Though Biochemical and cell-based assays are useful in examining the gene expression profile in embryonic stem cells upon treatment with Bisphenol A (BPA), it cannot be explicitly assumed that they are useful in finding out treatments for pollution-induced diseases.
Statement 3 is correct: It can be assumed from the passage that Embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants.
Hence Option (3) is correct.