Tag: from tasting to digestion

Questions Related to from tasting to digestion

Epithelial cells involved in absorption of digested food have on their free surface

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. Zymogen granules

  2. Pinocytic vesicles

  3. Phagocytic vesicles

  4. Microvilli

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Correct Option: D

Cattle are able to digest cellulose which humans cannot because cattle have

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. Cellulose digesting bacteria

  2. More efficient digestive system

  3. Large stomach

  4. Long intestine

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Correct Option: A

Find out the correct sequence of substrate, enzyme and product

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. $Small intestine : Proteins \xrightarrow{pepsin} Amino acids$

  2. $Stomach : Fats \xrightarrow{Lipase}micelles$

  3. $Duodenum : Triglycerides \xrightarrow{trypsin} Monoglycerides$

  4. $Small intestine : Starch \xrightarrow{a-amylase}Maltose$

Show answer
Correct Option: D
Explanation:

The saliva contains an enzyme called salivary amylase which hydrolyses starch into maltose. The complete digestion of starch occurs only in the small intestine by the action of pancreatic amylase. The activity of enzymes is strongly affected by several factors, such as temperature and pH.


So, the correct option is 'Option D'.

If for some reason the parietal cells of the gut epithelium become partially nonfunctional, what is likely to happen

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. Pancreatic enzymes, specially trypsin and lipase will not work efficiently

  2. Proteins will not be adequately hydrolysed by pepsin to proteoses and peptones

  3. pH of stomach will fall abruptly

  4. Steapsin will not be effective

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Correct Option: B

The enzyme that is not present in succus entericus is

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. Maltase

  2. Nucleases

  3. Nucleosidase

  4. Lipase

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Correct Option: B

Cellulose in our food passes out undigested.

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. True

  2. False

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Correct Option: A
Explanation:

Cellulose falls into the category of indigestible carbohydrates known as dietary fibre. Humans don't have an enzyme to digest cellulose. 

Hence, the correct answer is 'true'

Digestion of food occurs as a result of

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. hydrolysis

  2. oxidation

  3. polymerization

  4. reduction

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Correct Option: A
Explanation:

  • The digestion process depends upon hydrolysis to provide the biochemical reactions that break down food.
  •  The digestive tract secretes enzymes, such as proteases, carbohydrases, nucleases and lipases that, along with water, catalyze the hydrolysis that releases various nutrients. Hence, the Digestion of food occurs as a result of hydrolysis.
So, the correct answer is 'hydrolysis'.

Choose the correct answers from the alternatives given.
Most chemical digestion occurs in the

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. stomach

  2. liver

  3. duodenum

  4. large intestine

Show answer
Correct Option: C
Explanation:

Enteropeptidase is an enzyme produced by the cells of the duodenum and is involved in the digestion in humans and other animals. Enteropeptidase converts trypsinogen (a zymogen) into its active form trypsin, resulting in the subsequent activation of pancreatic digestive enzymes

So, the correct answer is 'duodenum'

Most digestive systems have regions for.......... food

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. transporting

  2. processing

  3. storing

  4. all of these

Show answer
Correct Option: D
Explanation:

The digestive system plays an important role in the absorption of nutrients into the body. It takes the food we ingest, breaks it down mechanically and chemically in the mouth and stomach. It then absorbs nutrients, fats, proteins, and water in the intestines before eliminating the waste through the rectum

So, the correct answer is 'all of these'

Which of the following is not produced in the stomach?

bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

  1. Sodium hydrogencarbonate

  2. Gastrin

  3. Hydrochloric acid

  4. Pepsinogen

Show answer
Correct Option: A
Explanation:

  1. The stomach produces gastrin, hydrochloric acid and pepsinogen.
  2. G-cells in the stomach releases gastrin in response to distension of the antrum. This, in turn, causes an increase in the secretion of HCl from the parietal cells or oxyntic cells, which kills or inhibits bacteria and provides the acidic pH for the proteases to work and pepsinogen is released from chief cells in the stomach called zymogenic cells or peptic cells. 
  3. Pepsinogen, inactive form of the enzyme in presence of hydrochloric acid activates into the active form, pepsin. Pepsin breaks down proteins into polypeptides. Hence, sodium hydrogen carbonate is not produced in the stomach.
So, the correct answer is 'sodium hydrogen carbonate'.