Nutrition questions | form two Biology

What food substances would you be testing for the following food test?

• Biuret test
• Sudan III test
• Greese spot test

Answer / Solution

• Biuret test ---------------> test for Proteins
• Sudan III test------------>test for Lipids
• Greese spot test------>test for Lipids

Differentiate between Curing and Smoking

Answer / Solution

The following is the difference between smoking and curing.

    Smoking is the method of preserving food by adding smoke to it.

     while

    Curing is the method of preserving food by  adding chemicals (preservatives) to it.

Differentiate between food storage and food presevation

Answer / Solution

Food storage is to put food in a certain location or place.

Methods used are:- put food in sucks or bags, put bags of food in a store room etc.

while

Food preservation is the process of keeping food so that it may last longer with minor or without changing  its quality for future uses.

Methods used are:- salting, smoking, canning, presevertives etc.

Draw the diagram of human digestive system and lable the following parts

• Liver
• Stomach
• Gall
• Pancreas
• Duodenum
• Colon
• Ileum
• Caecum
• Appendix

Answer / Solution

The following diagram shows the human digestive system with the following parts Liver, stomach, Gall, Pancreas, Duodenum, Colon, Ileum, Caecum and Appendix.

List and explain any five disorders of the digestive system of a man

Answer / Solution

The following are the main five disorders of the human digestive system

• Reflux :Reflux is one of the digestive system disorders which a person experiences  a heartburn, which is a burning feeling rising up from the abdomen  to the chest.

• Ulcers: Ulcers are painful sores that develop in the stomach lining or small intestine ,as the results of the  removal of the  mucus layer protecting the stomach from digestive juices ( Hydrochrolic Acid).

• Gallstones: These are small, hard crystalline mass of bile pigments, cholesterol, and calcium salts formed in  gallbladder or bile ducts. They tend to block the bile ducts causing severe pain to the patient.
• Constipation: Is a problem which a patient experiences difficulties in emptying the bowels, most of the time due to hardened feces.
• Diarrhea: Is a problem which a patient passes  loosy stools and  more frequent than normal. This occurs due to infections.