Tag: the muscular system and digestive system in human beings

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Questions Related to the muscular system and digestive system in human beings

Multiple choice 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

Which of the following is true about digestion and absorption of food?

  1. Trypsin, chymotrypsin and carboxypeptidase are brush border enymes
  2. The chemical process of digestion is initiated in the oral cavity. A bout $60\%$ starch is hydrolysed here by salivary amylase to form maltose

  3. Rennin is proteolytic enzyme found in grastic juice of infants. Small amounts of lipases are also secreted by the gastric glands

  4. If breast feeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year will suffer from kwashiorkar
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Rennin is a proteolytic enzyme present in the gastric secretion of infants that allows digestion of milk products. Small amounts of Gastric Lipase is also secreted by the gastric glands.
So, the correct option is 'Rennin is proteolytic enzyme found in grastic juice of infants. Small amounts of lipases are also secreted by the gastric glands'.

Multiple choice 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

Which of the following helps in the digestion of food?

  1. Hormones

  2. Digestive juice

  3. Water

  4. Blood
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The process of digestion begins from the mouth itself and gets completed in small intestine.
  • Stomach plays a key role in the digestion of food. It has gastric glands which secrete gastric juices needed to break down food to simple nutrients and thereby contributing to digestion.
  • There are different hormones in our body that has different functions. For example, there could be pH changes associated with different types of food. This pH change stimulates the secretion of a hormone called gastrin which induces the production of digestive juices. But it is not directly connected to the digestion process.
  • Water is present in cell, organs and tissues to help regulating temperature and maintaining body functions.
  • Absorbed food enters the blood stream and is taken to different parts of the body.
So, the correct option is B.

Multiple choice 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

Who revealed secrets of digestion?

  1. Mendel

  2. Beaumont

  3. Newton

  4. S. Bose
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • William Beaumont revealed the functioning of human stomach in a living person. In 1833, He published his findings in the book, 'The Experiments and Observation of the Gastric juice and Physiology of Digestion'. After 10 years from there, he listed many conclusions about the chemical nature of digestion.
  • He primarily discovered that gastric juice is responsible for the breakdown of food into simple nutrients and he also described the movement of stomach during digestion. 
  • So, the correct option is B.
Multiple choice 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

Digestion is completed in

  1. Duodenum

  2. Ileum

  3. Stomach

  4. Cloaca
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Digestion is completed in the Ileum because it is the last part of small intestine where all the digestive secretions end. From the large intestine, the process of absorption occurs predominantly.

So, the correct option is B.

Multiple choice 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

Enterokinase / enteropeptidase takes part in conversion of

  1. Pepsinogen to pepsin

  2. Trypsinogen to trypsin

  3. Protein into polypeptides

  4. Caseinogen into casein
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Enterokinase is an enzyme secreted by the intestinal mucosa that activates trypsinogen into its active form, trypsin.

Multiple choice 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

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

  1. Zymogen granules

  2. Pinocytic vesicles

  3. Phagocytic vesicles

  4. Microvilli
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Microvilli are small projections on the surface of epithelial cells in the small intestine that significantly increase the surface area for nutrient absorption.

Multiple choice 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

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

  1. Cellulose digesting bacteria

  2. More efficient digestive system

  3. Large stomach

  4. Long intestine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cattle are ruminants that possess specialized bacteria in their rumen capable of breaking down cellulose, which humans lack.

Multiple choice 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

Find out the correct sequence of substrate, enzyme and product

  1. $Small intestine : Proteins \xrightarrow{pepsin} Amino acids$
  2. $Stomach : Fats \xrightarrow{Lipase}micelles$
  3. $Duodenum : Triglycerides \xrightarrow{trypsin} Monoglycerides$
  4. $Small intestine : Starch \xrightarrow{a-amylase}Maltose$
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.