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Silph drugs/sulphanilamide kill bacteria...

Silph drugs/sulphanilamide kill bacteria by inhibting of which of the following ?

A

Para-aminobenzoic acid

B

Felic acid

C

Phenylalanine

D

Methionin

Text Solution

Verified by Experts

The correct Answer is:
B
Sulpha durgs compete P-aminobenzoic acid (PABA) which is essential for the synthesis of folic acid in bacteria . The Sulpha drugs act as competetive inhibitor and combine with enzyme and do not allow enzyme to act with RABA.
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TRUEMAN BIOLOGY-BIOMOLECULES -MULTIPLE CHOICE QUESTIONS
  1. Which of the following remains unchanged in reversible competitiv...

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  2. Which is common among Amylase, rennin and tryosin?

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  3. Silph drugs/sulphanilamide kill bacteria by inhibting of which of th...

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  4. One molecule of an enzyme is able to catalyse conversion of two molecu...

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  5. ATP was discovered by

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  6. Which form of RNA has a structure resembling clover leaf ?

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  7. Enzymes, vitamins and hormones can be classified into a single categor...

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  8. Which one of the following statements regarding enzyme inhibition is...

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  9. The catalytic efficiency of two different enzymes can be compared by t...

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  10. Which one is a nucleotide ?

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  11. Nucleic acids are strong acids. The acidity is due to

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  12. Adenylic acid is

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  13. Adenosine monophosphate is a

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  14. In DNA model of Watson & Crick, the major grooves are site of

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  15. At 82-92^(@)C the H-bonds between nitrogen bases of complementary str...

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  16. On cooling the two separated strands of DNA again recoil. It is called

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  17. If DNA has 10 spirals the length of DNA will be

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  18. What would be the length of DNA containing 10000 base pairs?

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  19. How many nucleotides are found in one spiral of B-DNA?

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  20. How many spirals (twins or helices) a DNA of 2000 base pairs will have...

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