Tag: coordination in life processes

Questions Related to coordination in life processes

One of the following movements is not completely involuntary. It is

biology coordination in life processes ingestion of food mechanism of digestion

  1. Peristalsis

  2. Systole of ventricles

  3. Dilation of eye pupil

  4. Deglutition

Show answer
Correct Option: D

Alexis St. Martin is famous for

biology coordination in life processes ingestion of food mechanism of digestion

  1. His views on evolution

  2. Work on animal breeding

  3. Open stomach for experiments on digestion

  4. Being first person to study digestion

Show answer
Correct Option: C
Explanation:
  • Alexis St. Martin was a Canadian voyageur known for his part in the study of digestion in humans.
  • St. Martin was shot with a musket at close range and had a near-fatal accident in 1822.
  • He was treated by an American Army physician William Beaumont.
  • His wound was not healed fully and also left an opening into his stomach.
  • Studies were conducted on St. Martin's stomach which led to helped to understand the structure of the stomach, different types of gastric juices and the processes of digestion and other activities in the stomach.
  • So, the correct answer is 'Open stomach for experiments on digestion'.

The scientist to study digestion for the first time was

biology coordination in life processes ingestion of food mechanism of digestion

  1. Beaumount

  2. Pavlov

  3. Guillemin

  4. Sach

Show answer
Correct Option: A
Explanation:

Beaumont recognized that he had in St. Martin an unusual opportunity to observe digestive processes. Dr. Beaumont began to perform experiments on digestion for the first time using the stomach of St. Martin. He is known as father of gastric physiology.

So, the correct option is 'William Beaumont'.

Read the following statements and select the correct option.
Statement 1 : Deglutition starts as a reflex and then continues by voluntary action.
Statement 2 : Oesophagus has smooth muscles in the beginning and striated muscles In the rest of its wall.

biology coordination in life processes ingestion of food mechanism of digestion

  1. Both statements 1 and 2 are correct.

  2. Statement 1 is correct but statement 2 is incorrect.

  3. Statement 1 is incorrect but statement 2 is correct.

  4. Both statements 1 and 2 are incorrect.

Show answer
Correct Option: D
Explanation:

The correct answer is (d).

Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of

biology coordination in life processes ingestion of food mechanism of digestion

  1. Epiglottis

  2. Diaphragm

  3. Neck

  4. All of these

Show answer
Correct 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

Show answer
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

Ammonia formed during digestion is processed in

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

  1. Liver

  2. Small intestine

  3. Large intestine

  4. Stomach

Show answer
Correct Option: A
Explanation:
  • During digestion, the deamination of amino acids results in the production of ammonia (NH3). 
  • However, the liver contains a system of carrier molecules and enzymes which quickly converts the ammonia (and carbon dioxide) into urea
  • This ammonia is an extremely toxic base and its accumulation in the body may cause death.  Hence,  Ammonia is formed during digestion in the liver.
So, the correct answer is 'liver'.

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'.