Mouth, Teeth and Salivary Gland

Q. what is the functions of salivary glands ?

Q.

What are the organic compounds in acid-insoluble fractions?

Q.

Draw a labeled diagram of the human digestive system. [5 MARKS]

Q.

What is meant by assimilation? Name two processes which is required for assimilation to happen. [2 MARKS]

Q.

Succus entericus contains

1. dipeptidases, nucleases, maltase

2. steapsin, sucrose, carboxypeptidase

3. disaccharidases, lipases, nucleosidases

4. enterokinase, amylase, nucleotidase

Q. Starch is converted into maltose by the enzyme called _______ .

1. Ptyalin
2. Salivary amylase
3. Trypsin
4. Pepsin

Q.

If you eat the food while hanging upside-down, do you think it will still go through the alimentary canal? Give reason

Q. Question 21
‘A’ got her gall bladder removed surgically as she was diagnosed with stones in her gall bladder. After the surgery, she faced problems in digestion of certain food items when consumed in bulk. Can you tell which kind of food items would they be and why?

Q.

Name and explain the functions of three enzymes that are responsible for digestion of carbohydrates? [3 MARKS]

Q. What is the hard substance that covers the tooth known as?

1. Gum
2. Dentine
3. Bone
4. Enamel

Q. What are the enzymes involved in digestion of humans?
Mention their functions.

Q.

We have often seen that an infant child after feeding milk vomits out something like curd. Why does this happen?

Q. Are salivary glands part of buccal cavity?

Q.

Why is peristalsis important?

Q.

What do you mean by accessory digestive glands?

Q.

Why are zymogens useful in some circumstances?

Q.

What Is Lecithin?

Q. Explain the process of digestion in detail.

Q.

Observe the teeth of the lion in the image and name the type of teeth which are used to puncture and tear flesh.

1. Canines

2. Premolars

3. Molars

4. Incisor

Q. Where does digestion of food start and end?

Q. In human digestive system, various enzymes are secreted from various glands which breakdown complex substances into simpler one.

Select the option which does not contain any enzyme.

1. Bile juice
2. Pancreatic juice
3. Gastric juice
4. Saliva

Q. Food in our mouth is broken down into small pieces by our ________.

1. tongue
2. teeth
3. lips
4. saliva

Q.

Name of the undigested cellulose fibrous in nature.

Q. List down five major steps involved in process of nutrition.

Q.

The structures that help intake of food in Amoeba are

1. cilia

2. finger

3. pseudopodia

4. vacuole

Q. 1) How is digested food is used?
name the end product of carbohydrate after digestion that provides us with energy?
2) What do cells do with the digested food?
3) Why do you think people running marathons take high energy drinks rather than eat food cointaining carbohydrates?

Q.

Is NADP an electron carrier?

Q.

Vegetables and fruits keep the digestive system clean.

Q.

Which of the following cannot be an example of excretion?

1. Carbon dioxide is breathed out from the lungs

2. Undigested food leaves the body through the anus

3. Urea leaves the body in urine

4. Water is removed through the kidneys

Q.

Define peristalsis. What is the direction of normal peristalsis? [2 MARKS]