Biology s3, 2nd. term quest dec 2013Document Transcript
Materia: Biology Senior 3
Profesora: Ma. Magdalena Ravagnan
Contenido nodal: Nutrition and transport in humans
Fecha de presentación: Tuesday December 10th
(a) What is an enzyme?
(b) State the conditions in which enzymes work best.
(c) Outline the parts played by named enzymes in each of the following processes.
i- protein digestion in the alimentary canal.
ii- fat digestion in the alimentary canal.
iii- starch digestion in the alimentary canal.
B- Human nutrition
1) Fig.1 shows the human digestive system
(a) Label on the diagram: mouth- oesophagus- stomach- small intestine- large intestine- anusLiver- pancreas- gall bladder
(b) Using the appropriate letter, label where each of the following is produced:
- an amylase,
- hydrochloric acid,
- a lipase,
- absorption (F)
2) Table 1 shows information about the composition of a fruit.