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Biomolecules

Question

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What are forces holds the two strands of DNA together in a double-helix structure? Draw structure to show the bonding between adenine and thymine, and between guanine and cytosine.

Solution

Hydrogen bonding holds the two strands of DNA together in a double-helix structure.
‘A’ pairs up with ‘T’ via two hydrogen bonds while G pairs up with C via three hydrogen bonds.

Some More Questions From Biomolecules Chapter

When RNA is hydrolysed, there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of RNA?

What is a biomoiecule?

Define carbohydrates.

Give one example each of (i) Reducing sugar and (ii) Non-reducing sugar.

Name the anomers of glucose.

State two characteristics of monosaccharides.

Name a carbohydrate containing five carbon atoms per molecule.

Name the monomers of starch.

Name the polysaccharides that is stored in the liver of animals.

What do you understand by the term gycosidic linkage?

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