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Digestion and Absorption

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Describe digestion of nucleic acids.

Digestion of nucleic acids : Nucleic acids are digested in duodenum and jejunum-ileum.

Digestion in small intestine : The nucleic acids in  are acted upon by nucleases prsent in the pancreatic juices. The nucleases act on the nucleic acids to give nucleotides which are further broken down into nucleosides. 

begin mathsize 16px style bold Nucleic bold space bold acids bold space bold rightwards arrow with bold Nucleases on top bold Nucleotides bold space bold rightwards arrow bold Nucleosides bold space end style

Digestion of nucleotides : Nucleotides are digested in jejunum-ileum. The intestinal juice contains nucleotidases and nucleosidases.

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What is the order of arrangement of teeth in each half of the upper and lower jaw ?

The order of arrangement of teeth in each half of the upper and lower jaw is I,C,PM,M.  I (incisors), C (cannine), PM (premolars), M (molars).

Name the fat soluble vitamins.

Vit A, D, E and  are fat soluble vitamins.

What is the function of enamel in digestion?

The enamel helps in the mastication of food.

What is Diphyodont ?

Diphyodont is the condition of having two set of teeth during the life of an organism. For example : humans are diphyodont as they have two set of teeth namely temporary milk or deciduous teeth which are replaced by permanent or adult teeth. 


What are Sanguivorous animals ?

The animals which suck blood e.g. leech, vampire bat, female mosquito etc.