3.3.4 Digestion 2 Fmquiz Homework Solution
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. Describe two functions of bile in relation to digestion.
A. Emulsification; Raises pH or makes alkaline
Q. Where is lipase secreted?
A. Pancreas or Duodenum
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. 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. 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 a process involved in the passage of the products of digestion into the blood.
A. Diffusion or Passive transport
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. Why is digestion necessary?
A. For solubility or For absorption or For transport
Q. From what organ does the bile duct leave?
A. Gall bladder
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. Where does lipase act?
A. Duodenum or Small intestine
Q. Give two activities of symbiotic bacteria in the human digestive system.
A. Digestion; Production of vitamins; Benefit immune system; Compete with other micro-organisms
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. Indicate which of the following most accurately represents the pH of the contents of the small intestine. Acidic.Neutral.Alkaline.
A. Alkaline
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. Proteins are digested to simpler substances. What are these simpler substances called?
A. Amino acids
Q. In which organ is food churned into chyme?
A. Stomach
Q. Which teeth grind food into smaller pieces?
A. Molars
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