ATI RN
Questions About Digestive System Questions
Question 1 of 5
Match: Lipid
Correct Answer: A
Rationale: Lipids, or triglycerides, consist of three fatty acids attached to a glycerol molecule and provide energy storage.
Question 2 of 5
In human body, the digestion of protein begins in which of the following organs?
Correct Answer: D
Rationale: The digestion of protein begins in the stomach, where pepsin, activated by hydrochloric acid, starts breaking down proteins into smaller peptides.
Question 3 of 5
An investigation is carried out on digestion and absorption in the alimentary canal. The diagram shows the apparatus used. The visking tubing is permeable to small molecules such as glucose but not to large molecules such as starch. beaker water starch solution and amylase visking tubing glass rod to support visking tubing After one hour, samples of water in the beaker are tested with Benedict's solution and with iodine solution. Which colours are obtained?
Correct Answer: D
Rationale: Starch is broken down to glucose, which passes through the visking tubing, giving a positive Benedict's test (red), while iodine remains negative as starch cannot pass through.
Question 4 of 5
What are the advantages of chewing food at the start of digestion?
Correct Answer: D
Rationale: Chewing increases the surface area for enzyme action, lubricates food with saliva, and helps dissolve food particles.
Question 5 of 5
The muscular tube that extends from the mouth to the anus is called:
Correct Answer: D
Rationale: The alimentary canal, also known as the digestive tract, is the continuous muscular tube extending from the mouth to the anus, encompassing all digestive organs.