A. B B. C C. D D. K

A. They have enzyme cellulose in their stomach B. They masticate it well by chewing teeth C. They have bacteria in their alimentary canal which digest cellulose D. None of the above

A. Calcium B. Fluorine C. Iodine D. Sodium

A. Kidneys B. Liver C. Lungs D. Stomach

A. Left central lobe of liver B. Caudate lobe C. Right central lobe of liver D. Spegelian lobe

A. Lined by muscular tissue B. Provided with epithelial tissue C. Lined with both epithelial and muscular tissue D. Lined by all four layers

A. To dissolve enzyme secreted in stomach B. To maintain a low pH to prevent growth of microorganisms C. To maintain low pH to facilitate aborption D. To maintain low pH to activate pepsinogen to form pepsin

A. An enzyme converting trypsinogen into trypsin B. A hormone stimulating intestine C. A hormone inhabiting HCl secretion D. The inactive state of an enzyme