Tag: digestive system - organs

Questions Related to digestive system - organs

Dental formula in human beings 

biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

  1. $\dfrac{3223}[3223}$

  2. $\dfrac{2123}[2123}$

  3. $\dfrac{1232}[1232}$

  4. $\dfrac{2233}[2233}$

Show answer
Correct Option: B
Explanation:

The correct answer is (b).

Dental formula refers to 

biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

  1. The minimum number of teeth in one half of one jaw

  2. The number of each type of tooth in one half of one jaw

  3. The overall geometric shape of the jaw

  4. Maximum number of teeth in the mouth

Show answer
Correct Option: A
Explanation:

In each set of teeth, incisors (I) are indicated first, canines (C) second, premolars (P) third, and finally molars (M), giving I:C:P:M which is the minimum number of teeth in one half of one jaw. 

So, 'the correct option is 'The minimum number of teeth in one half of one jaw'.

Identify typical dental formula of a metatherian.

biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

  1. i 5/4. c 1/1, pm 3/3, m 4/4

  2. i 3/3, c 1/1, pm 4/4, m 3/3

  3. i 4/3, c 1/1, pm 3/3, m 4/4

  4. i 4/5, c 1/1, pm 3/3, m 4/4

Show answer
Correct Option: A
Explanation:

There is only one set of teeth functional throughout life with the exception of a milk molar which is replaced by the last premolar. Incisors are more numerous than in placentals. 3 premolars and 4 molars as against 4 P and 3 M in placentals. Dentition in opossum is I 5/4, C 1/1, P 3/3, M 4/4. 


So, the correct option is 'Option A'.

Uvula is part of

biology coordination in life processes buccal cavity digestive system - organs coordination in the process of digestion

  1. Tongue

  2. Soft palate

  3. Hard palate

  4. Epiglottis

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Correct Option: B

Uvula can close the opening of

biology coordination in life processes buccal cavity digestive system - organs coordination in the process of digestion

  1. Larynx

  2. Gullet

  3. Internal nares

  4. Eustachian tubes

Show answer
Correct Option: C

Which of the options given below would not correctly fill the blanks in the following sentence?


In order to absorb and use ____ by the body, these must be broken down by hydrolysis into ___.

bio-chemistry coordination in life processes role of intestine digestion in intestine mechanism of digestion digestive system - organs

  1. Polysaccharides, Monosaccharides

  2. Amino acids, Proteins

  3. Fats, Glycerol and Fatty acids

  4. Disaccharldes, Monosaccharides

Show answer
Correct Option: B
Explanation:
  • Proteins are converted into dipeptides in the stomach which is followed by the conversion of dipeptides to amino acids in the small intestine. These amino acids are absorbed through the wall of the intestine as simple absorbable substances.
  • Hence In order to absorb and use Proteins by the body, these must be broken down by hydrolysis into proteins.
  • So, the correct answer is 'amino acids, proteins'.

Which one of the following enzyme is absent in invertebrates?

bio-chemistry coordination in life processes role of intestine digestion in intestine mechanism of digestion digestive system - organs

  1. Pepsin

  2. Trypsin

  3. Lipase

  4. Amyalase

Show answer
Correct Option: B
Explanation:

Protein in invertebrates is a breakdown by four different enzymes known as a proteinase, carboxypolypeptidase, aminopolypeptidase, and dipeptidase, which can be separated by adsorption but vertebrates have one extra enzyme trypsin is also found that helps in activation of the given four and digestion of protein.

So the correct option is 'Trypsin'.

What is common among amylase, rennin and trypsin?

bio-chemistry coordination in life processes role of intestine digestion in intestine mechanism of digestion digestive system - organs

  1. These are produced in stomach

  2. These act at a pH lower than $7$

  3. These all are proteins

  4. These all are proteolytic enzymes

Show answer
Correct Option: C
Explanation:

Amylase, rennin and trypsin are protein enzymes.

Amylase is enzymes that catalyse the hydrolysis of carbohydrates. Amylase is produced by the pancreas and salivary glands.
Rennin is an enzyme especially produced by stomach for digestion of milk proteins in infants. 
Trypsin is a proteolytic enzyme produced in the small intestine. 
So, the correct option is 'These all are proteins'.

Pancreatic amylase acts on?

bio-chemistry coordination in life processes role of intestine digestion in intestine mechanism of digestion digestive system - organs

  1. Starch

  2. Protein

  3. Lipid

  4. Disaccharide

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Correct Option: A

Lipase acts on ________________.

bio-chemistry coordination in life processes role of intestine digestion in intestine mechanism of digestion digestive system - organs

  1. Proteins

  2. Fats

  3. Carbohydrates

  4. Aminoacids

Show answer
Correct Option: A