3.3.4 Digestion 2 FMQuiz Homework Solution
Q. Name a structure in the human digestive
system, other than teeth, which is involved in
mechanical digestion.
A. Tongue or Oesophagus or Stomach or Small
intestine
Q. From which part of the alimentary canal does
food arrive into the duodenum?
A. Stomach
Q. Name the part of the digestive system in which
water is absorbed into the blood.
A. Colon
Q. Describe two functions of bile in relation to
digestion.
A. Emulsification; Raises pH or makes alkaline
Q. Where does lipase act?
A. Duodenum or Small intestine
Q. Where is lipase secreted?
A. Pancreas or Duodenum
Q. Give two activities of symbiotic bacteria in the
human digestive system.
A. Digestion; Production of vitamins; Benefit
immune system; Compete with other microorganisms
Q. What are symbiotic bacteria?
A. Bacteria that live in or on another organism
involving benefit
Q. Name the part of the digestive system in which
the products of digestion absorbed into the blood.
A. Ileum or villi
Q. State one digestive function of the pancreas.
A. Produces enzymes or neutralises chyme
Q. What process results from the contraction of
the muscles in the small intestine?
A. Peristalsis
Q. Explain how the ileum (small intestine) is
adapted for the absorption of the products of
digestion.
A. Large surface area; Good blood and lymph
supply; Lining one cell thick; Long; Villi
Q. Indicate which of the following most accurately
represents the pH of the contents of the small
intestine. Acidic. Neutral. Alkaline.
A. Alkaline
Q. What is meant by the term digestion?
A. The breakdown of food
Q. Where in the human body is the liver located in
relation to the stomach?
A. Above and to the right
Q. Name two glands that pass their secretions into
the small intestine.
A. Pancreas; Liver
Q. What is the approximate pH of the site of action
of lipase?
A. 7 – 9
Q. Name a process involved in the passage of the
products of digestion into the blood.
A. Diffusion or Passive transport
Q. Proteins are digested to simpler substances.
What are these simpler substances called?
A. Amino acids
Q. A person who has suffered from constipation
may be advised to increase the amount of
wholegrain cereal in her/his diet. Why?
A. Adds fibre, fibre absorbs water, peristalsis
encouraged, faster digestive transit
Q. In which organ is food churned into chyme?
A. Stomach
Q. Why is digestion necessary?
A. For solubility or For absorption or For transport
Q. Which teeth grind food into smaller pieces?
A. Molars
Q. From what organ does the bile duct leave?
A. Gall bladder
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