Biology Trivia Questions On Digestive System! Quiz

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Questions: 8 | Attempts: 1,849 | Updated: Mar 20, 2023

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Biology Trivia Questions On Digestive System! Quiz - Quiz

The human body is made up of a set of systems that are made up of organs designed to perform a given main function. The digestive system is one of these systems, and it is all about breaking down the food we ingest and removing the unwanted parts after the nutrients have been absorbed. Take up this biology trivia on the system and see how well you understand it.

Questions and Answers

1.

Digestion could not be carried out without digestive enzymes.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Digestion could not be carried out without digestive enzymes. This statement is false. While digestive enzymes play a crucial role in breaking down food into smaller molecules that can be absorbed by the body, digestion can still occur to some extent without them. For example, mechanical digestion, where food is physically broken down by chewing and stomach contractions, can still take place even without the presence of digestive enzymes. However, the efficiency and effectiveness of digestion would be significantly reduced without these enzymes.

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1
2.

Digestive enzymes work at a temperature around ______.
- A.
  
  31 degrees celsius
- B.
  
  31 degrees farenheit
- C.
  
  37 degrees celsius
- D.
  
  37 degrees farenheit
Correct Answer
C. 37 degrees celsius

Explanation
Digestive enzymes work best at a temperature of 37 degrees Celsius. This is the normal body temperature of humans, and it is the optimal temperature for the enzymes to function effectively in breaking down food into smaller molecules that can be absorbed by the body. At this temperature, the enzymes have the right amount of energy to catalyze the chemical reactions involved in digestion.

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3.

Amylase is an enzyme located in the ______.
- A.
  
  Mucus
- B.
  
  Stomach
- C.
  
  Saliva
- D.
  
  Blood
Correct Answer
C. Saliva

Explanation
Amylase is an enzyme that breaks down complex carbohydrates into simpler sugars. It is primarily found in saliva, where it begins the process of digestion by breaking down starches into maltose. This allows for easier absorption and utilization of carbohydrates by the body.

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4.

Protease has an active pH at around _____. (To the nearest whole number)

Correct Answer
2
two

Explanation
Protease is an enzyme that breaks down proteins. It has an optimal pH level at around 2, which means it functions most effectively in an acidic environment. This acidic pH helps protease to denature proteins and facilitate their digestion. The answer "2" and "two" both indicate the same pH level, which is the optimal pH for protease activity.

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4
5.

The parts of the digestive system go in the order of...
- A.
  
  Mouth, esophagus, stomach, large intestine, small intestine, colon, anus
- B.
  
  Mouth, esophagus, stomach, small intestine, large intestine, colon, anus
- C.
  
  Mouth, esophagus, stomach, colon, small intestine, large intestine, anus
- D.
  
  Mouth, esophagus, stomach, large intestine, anus, colon, large intestine
Correct Answer
A. Mouth, esopHagus, stomach, large intestine, small intestine, colon, anus

Explanation
The correct answer is mouth, esophagus, stomach, small intestine, large intestine, colon, anus. This is the correct order of the parts of the digestive system through which food passes. After entering the mouth, food travels through the esophagus to reach the stomach. From the stomach, it moves into the small intestine where most of the digestion and absorption of nutrients take place. The remaining undigested material then enters the large intestine, which includes the colon, where water and electrolytes are absorbed. Finally, the waste material is eliminated through the anus.

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8
6.

The stomach -
- A.
  
  Secretes HCL which kills bacteria
- B.
  
  Has a pH of approximately 3-4
- C.
  
  Provides optimum condition for pepsin to work
Correct Answer(s)
A. Secretes HCL which kills bacteria
C. Provides optimum condition for pepsin to work

Explanation
The stomach secretes hydrochloric acid (HCL) which kills bacteria. This is important for preventing the growth of harmful bacteria in the stomach and maintaining a healthy digestive system. Additionally, the stomach's pH level of approximately 3-4 provides an optimum condition for the enzyme pepsin to work. Pepsin is responsible for breaking down proteins into smaller molecules, aiding in the digestion process.

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7.

Absorption occurs with the help of the _____.
- A.
  
  Villu
- B.
  
  Villa
- C.
  
  Villi
- D.
  
  Villo
Correct Answer
C. Villi

Explanation
Absorption occurs with the help of the villi. Villi are small finger-like projections found in the small intestine that increase the surface area for absorption of nutrients. They have a rich blood supply and contain specialized cells called enterocytes, which have microvilli on their surface. These microvilli further increase the surface area for absorption. The villi play a crucial role in absorbing nutrients such as sugars, amino acids, and fatty acids from the digested food into the bloodstream for distribution to the body's cells.

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8.

Assimilation happens after absorption.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Assimilation is the process by which absorbed nutrients are incorporated into the body's tissues and used for various functions. It occurs after absorption because absorption is the process by which nutrients are taken up by the body from the digestive system into the bloodstream. Once absorbed, these nutrients are then assimilated into the cells and tissues of the body. Therefore, it is correct to say that assimilation happens after absorption.

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Current Version
Mar 20, 2023

Quiz Edited by
ProProfs Editorial Team
May 26, 2011

Quiz Created by
Rickysegers

Biology Trivia Questions On Digestive System! Quiz

Digestion could not be carried out without digestive enzymes.

Digestive enzymes work at a temperature around ______.

Amylase is an enzyme located in the ______.

Protease has an active pH at around _____. (To the nearest whole number)

The parts of the digestive system go in the order of...

The stomach -

Absorption occurs with the help of the _____.

Assimilation happens after absorption.