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प्रश्न
Correct the spellings: Pespin
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उत्तर
Pepsin
APPEARS IN
संबंधित प्रश्न
Digestion of starch starts in the stomach.
Iodine turns blue-black on reacting with ______.
What is the role of hydrochloric acid in our stomach?
| When a person eats sugary food, then organisms A present in his mouth act on sugar to produce a substance B. The substance B first dissolves the calcium salts from the top part C of the tooth and then from its middle part D forming holes E. These holes ultimately reach the part F in the lower part of tooth which contains nerves and blood vessels. The substance B irritates the nerve endings inside the tooth causing toothache. |
- What are (i) organisms A, and (ii) substance B?
- What are (i) part C, and (ii) part D, of tooth known as?
- By what name are the holes E in the tooth known?
- Name the part F of the tooth.
- What will happen if organisms A reach part F of the tooth known?
| If the teeth are not cleaned regularly, they become covered with a sticky yellowish layer W of food particles and bacteria. Since layer W covers the teeth, the alkaline liquid X secreted by glands Y inside the mouth cannot reach the teeth surface to neutralise the acid formed by the action of organisms Z on sugary food, and hence tooth decay sets in. |
- What is W known as?
- What are (i) X and (ii) Y?
- What are organisms Z?
- State one way of removing layer W from the teeth.
Define the following term:
Kilocalorie
List two different functions performed by the pancreas in our body.
Answer the following question.
Write two different ways in which glucose is oxidized to provide energy in the human body. Write the products formed in each case.
State whether the following statement is True or False.
The temporary set of teeth includes incisors, canines, and premolars only.
Give reasons for the following.
Meat eating animals have strong canines.
Write short answers
What is peristalsis?
Define with examples: Autotrophs
Describe the following: Coagulation of milk in the digestive system.
Correct the spellings: HLC
The question has four options. Choose the correct answer:
Parotid salivary glands occur
Analogy
Enzymes: Digestive glands:: _______: Endocrine glands.
Secretions of ____________ lubricate the lumen of the alimentary canal.
During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the
Curdling of milk protein is done by ______.
Write the chemical name and Molecular formula of tooth enamel.
