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$ Minerals such as carbonates and phosph...

$ Minerals such as carbonates and phosphates acts as buffers.
! Biomolecules contain only 25 elements out of the 109 known elements.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

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The correct Answer is:
B
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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
  1. $ Protoplasm is the physical basis of a cell. ! Angstrom is a unit ...

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  2. $ All the living and non living matter is formed of molecules. ! Mo...

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  3. $ Minerals such as carbonates and phosphates acts as buffers. ! Biom...

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  4. $ ATP is a type of coenzyme. ! Adenine is a type of pyrimidine.

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  5. $ Ergosterol is a lipid that changes to vitamins D on activation by UV...

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  6. $ Minerals from 25 to 30% of the cell contents. ! Lipids form 40 to ...

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  7. $ Proteins, polysaccharides and nucleic acid are the macromolecules of...

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  8. $ DNA helix to 20Å wide. One complete turn of DNA is 34Å long.

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  9. $ The two strands of DNA run in an antiparallel directions DNA is fo...

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  10. $ The process of formation of polysaccharides by condensation of monom...

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  11. $ Agar-agar is a carbohydrate obtained from some sea weeds. ! Agar a...

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  12. $ In conjugated proteins, the protein molecule is joined to a non pro...

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  13. $ Rhodopsin of rod cells and iodospin of cone cells of retina are prot...

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  14. $ Louis Pasteur discovered that fermentation is brought about by mic...

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  15. $ Those enzymes which are active inside a cell are called extra-cellul...

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  16. $ Enzymes are special types of proteins. ! Those substances which in...

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  17. $ Coenzymes are usually proteins ! The term feedback refers to the e...

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  18. $ The cell membrane helps in pinocytosis and phagocytosis. ! Cell me...

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  19. $ Positive diffusion occurs against the concentration gradients. ! O...

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  20. $ Exosmosis causes turgidity. ! Endomosis causes flaccidity.

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