Free Digestion And Absorption (Daily Quiz: 14) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Answer: (b)

Fructose and mannose are absorbed through facilitated diffusion that is by the help of the carrier molecule. It is along the concentration gradient (higher concentration to low concentration).

Answer: (b)

Young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish because bile pigment passed through bile juice. Bile pigments are any of several coloured compounds derived from porphyrin that are found in bile; principally bilirubin and biliverdin. Bile pigment is produced regularly when old red blood cells are broken down, mainly by the spleen. In some blood disorders where the red cells are destroyed, more bile pigment is produced.

Answer: (c)

The stomach stores food (and performs some digestion too) before passing it on to the intestine. The small intestine (midgut) finishes the digestion and carries out most of the nutrient absorption, while the large intestine (hindgut) reabsorbs water and ions.

Answer: (d)

Colostrum (also known as beesting or first milk) is a form of milk produced by the mammary glands in late pregnancy and the few days after giving birth. Human and bovine colostrums are thick, sticky and yellowish. In humans, it has high concentrations of nutrients and antibodies, but it is small in quantity.

Colostrum is high in carbohydrates, high in protein, high in antibodies, and low in fat (as human newborns may find fat difficult to digest). Newborns have very small digestive systems, and colostrum delivers its nutrients in a very concentrated low-volume form. It has a mild laxative effect, encouraging the passing of the baby's first stool, which is called meconium. This clears excess bilirubin, a waste product of dead red blood cells which is produced in large quantities at birth due to blood volume reduction, from the infant's body and helps to prevent jaundice.