Practice MCQ Questions and answers on Biology-GK

Vitamin A deficiency can result from inadequate intake, fat malabsorption, or liver disorders. Deficiency impairs immunity and hematopoiesis and causes rashes and typical ocular effects (eg, xerophthalmia, night blindness).

Coprophagia or coprophagy is the consumption of faeces. Coprophagy refers to all kinds of faeces eating including eating faeces of other species (heterospecific), of other individuals (allocoprophagy), or its own (autocoprophagy), those once deposited or taken directly from the anus.
So, the correct answer is 'Coprophagus'

Vitamin K is a nutrient that the body needs to stay healthy. It's important for blood clotting and healthy bones and also has other functions in the body.

Iron deficiency anaemia is a common type of anaemia a condition in which blood lacks adequate healthy red blood cells.

Health benefits and sources of vitamin K. Vitamin K refers to a group of fat-soluble vitamins that play a role in blood clotting, bone metabolism, and regulating blood calcium levels. The body needs vitamin K to produce prothrombin, a protein and clotting factor that is important in blood clotting and bone metabolism.

Obesity - when body fat exceeds 30% of total weight.

When there is an excessive intake of fluorine in the diet, the person suffers from many dental and bone-related deformities. The long bones are affected which results in breaking and fractures in the bones. There is a reduction in bone density and elasticity which results in osteosclerosis. There are problems with dental fluorosis in cases of children during the growth of the teeth in case of a high intake of fluorine.
Thus, the correct answer is option D.

Cellulose is a carbohydrate formed by a linear polymerisation of β-D-glucose units, which in contrast to starch, is oriented with − CH₂OH groups, alternating above and below the plane of the cellulose molecule, thus producing long, unbranched chains.

Thiamine deficiency, or beriberi, refers to the lack of thiamine.

Kwashiorkor is caused by a lack of protein in the diet. Every cell in your body contains protein. You need protein in your diet for your body to repair cells and make new cells.