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About 98 percent of the mass of every li...

About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and

A

Calcium and phosphorus

B

Phosphorus and sulphur

C

Sulphur and magnesium

D

Magnesium and sodium

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The correct Answer is:
B
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About 98 percent of the mass of every living organisms is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and

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Adenine is a substituted form of a heterocyclic nitrogenous base Purine. Adenine is found in both polymers DNA and RNA . Adenine is composed of the elements carbon, hydrogen and nitrogen and has molecular mass of 13.5 amu . Upon analysis, it was found that the ratio of % (by w.t. ) of carbon to that of total % (by wt ) of hydrgoen and nitrogen was found to be 4:5 respectively. The ratio of number of N atoms to hydrogen atoms is 1 : 1 . Now, answer the following questions: In one molecule of adenine :

Adenine is a substituted form of a heterocyclic nitrogenous base Purine. Adenine is found in both polymers DNA and RNA . Adenine is composed of the elements carbon, hydrogen and nitrogen and has molecular mass of 13.5 amu . Upon analysis, it was found that the ratio of % (by w.t. ) of carbon to that of total % (by wt ) of hydrgoen and nitrogen was found to be 4:5 respectively. The ratio of number of N atoms to hydrogen atoms is 1 : 1 . Now, answer the following questions: The amount of glucose (C_(6)H_(12)O_(6)) obtained when all the carbon in 36 mg of adenine is converted into glucose is :

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET-MCQs
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  5. What is common of Whale, Seal and Shark?

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  7. Select the wrong statement from the following

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  9. If the mean and the median pertaining to a certain character of a popu...

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  10. Which of the following is a slime mould

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  11. For a critical study of secondary growth in plants, which one of the...

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  12. Which one of the following statements about mycoplasma is wrong

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  13. In the prothallus of a vascular cryptogam, the antherozoids and egg m...

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  14. Two plants can be conclusively said to belong to the same species if t...

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  15. If you are asked to classify the various algae into distinct groups, w...

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  17. In gymnosperms the pollen chamber represents

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  18. Spore dissemination in some liverworts is aided by

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