ATI RN
Questions About Digestive System Questions
Question 1 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 2 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.
Question 3 of 5
The end product of digestion of starch which is absorbed into the bloodstream is:
Correct Answer: C
Rationale: Starch is broken down into glucose by enzymes like amylase and maltase, which is then absorbed into the bloodstream.
Question 4 of 5
Which process matches the definition: Thin, tough, outer layer of the alimentary tract, which enables it to move smoothly against other organs?
Correct Answer: D
Rationale: The serosa is the outermost layer of the GI tract, allowing smooth movement against adjacent organs.
Question 5 of 5
What happens during defecation?
Correct Answer: D
Rationale: Defecation is the final stage where undigested waste (feces) is eliminated via the anus.