WorksheetsChapter 7 test
Total questions: 10
Worksheet time: 6mins
The process of nutrition does not include the
intake of food.
use of food molecules for metabolism.
removal of metabolic wastes.
breakdown of food substances into simple molecules.
Which of the following structure does not produce digestive juice?
Pancreas
Small intestine
Gall bladder
Stomach
The dental formula of an animal is i 2/2, c 1/1, pm 2/2, p 2/2 . How many teeth does this animal have?
7
14
28
32
Which of the following statements about physical digestion and chemical digestion is correct?
Bile involves in both physical and chemical digestion.
In the mouth cavity, carbohydrates undergo physical digestion only.
In both types of digestion, food substances are broken down into simpler molecules.
Physical digestion can enhance the efficiency of chemical digestion.
The graph shows the percentage of undigested molecules (P, Q and R) present along the alimentary canal.
Which of the following statements correctly interprets the graph?
No digestion occurs in the mouth cavity.
The rate of digestion is the fastest in the stomach.
The digestion of R is completed in the small intestine.
All molecules are absorbed in colon.
The graph shows the percentage of undigested molecules (P, Q and R) present along the alimentary canal.
Which of the following correctly identifies the three food substances?
P: starch Q: protein R: lipid
P: protein Q: lipid R: starch
P: lipid Q: starch R: protein
P: starch Q: lipid R: protein
Most water is absorbed in the small intestine. Based on the graph, this is because
the small intestine has many villi to increase the surface area for water absorption.
most of the food substances are absorbed in the small intestine, the water potential of blood in the small intestine decreases.
the alkaline intestinal juice favours the absorption of water in the small intestine.
the rate of digestion is the highest in the small intestine.
The diagram shows a part of the alimentary canal. Blood vessel X connects the small intestine and the liver.
Which of the following descriptions about blood vessel X is correct?
It carries oxygenated blood to the liver.
The water potential of the blood inside blood vessel X is low.
It is an artery because the blood inside flows towards an organ.
It transports vitamin A to the liver.
Lipids absorbed in the small intestine are first transported to the
liver.
gall bladder.
large intestine.
heart.
Which of the following is not an excretory waste produced by the liver?
carbon dioxide
urea
bile pigment
bile salt
