Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II. 

            Column I                                   Column II

1. Glycine and glucose            Small intestine and active absorption

2. Fructose and Na⁺               Small intestine passive absorption

3. Glycerol and fatty acids       Duodenum and move as chilomicrons

4. Cholesterol and maltose      Large intestine and active absorption

In vertebrates lacteals are found in

1. ileum

2. ischium

3. oesophagous

4. ear

Fructose is absorbed into the blood through mucosa cells of intestine by the process called 

1. active transport

2. facilitated transport

3. simple diffusion

4. co-transport mechanism

Carrier proteins faciliate the absorption of substance like

1. amino acids and glucose

2. glucose and fatty acids

3. fatty acids and glycerol

4. fructose and some amino acids

Which one of the following statement is false regarding digestion and absorption of food in humans?

1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

2. Glucose and amino acids are absorbed with the help of carrier ions like Na⁺.

3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.

4. About 30% of starch is hydrolysed by salivary amylase in our mouth.

Which one of the following is the correct matching of the site of action on the given

substrate, the enzyme acting upon it and the end product?
1. Duodenum :Triglycerides→Trypsin→Monoglycerides
2. Small intestine :Starch→α-amylase→Disaccharide (maltose)
3. Small intestine :Proteins→Pepsin→Amino Acids
4. Stomach :Fats→ Lipase→Micelles

Examination of blood of a person suspected of having anaemia, shows large, immature,

nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the

following, is likely to alleviate his symptoms?

1. Thiamine

2. Folic acid and cobalamine

3. Riboflavin

4. Iron compounds

Fructose and some amino acids are absorbed by:

(1) Active transport

(2) Diffusion

(3) Facilitated transport

(4) Osmosis

How is the digestion of fats different from that of proteins and carbohydrates?

(1) Fat digestion occurs in the small intestine, and the digestion of proteins and carbohydrates occurs in the stomach

(2) Fats are absorbed into the cells as fatty acids and monoglycerides but are then modified for absorption into the blood; amino acids and glucose are not modified further

(3) Fats enter the hepatic portal circulation, but digested proteins and carbohydrates enter the lymphatic system

(4) Digested fats are absorbed in the large intestine, and digested proteins and carbohydrates are absorbed in the small intestine

Which of the following end product of digestion is absorbed by means of active, passive and facilitated diffusion?