Osteomalacia is a deficiency disease of

• infants due to protein energy malnutrition

• adults due to protein energy malnutrition

• adults due to vitamin-D deficiency

• infants due to vitamin-K deficiency

Ptyalin is inactivated by a component of gastric juice known as

• pepsin

• mucus

• renin

• HCl

43.

Which one of the following human cells do not contain mitochondria?

• Nerve cell

• Red blood cell

• Liver cell

• White blood cell

In which stage of the first meiotic division two sister chromatids are formed?

• Leptotene

• Zygotene

• Pachytene

• Diplotene

Structural lipids of cell membrane are

• simple lipid

• chromolipids

• steroid

• phospholipids

Which one of the following is polysaccharide?

• Glycogen

• Sucrose

• Lactose

• Maltose

Which of the following is not correctly matched?

• Sycon - Canal system

• Star fish - Radial symmetry

• Ascaris - Flame cell

• Prawn - Haemocoel

Which one of the following animal phyla does not possess a coelom?

• Platyhelminthes

• Annelida

• Mollusca

• Echinodermata

Cardiac muscles are

• striated and voluntary

• striated and involuntary

• smooth and voluntary

• smooth and involuntary

Which one of the following cells is not a phagocytic cell?

• Macrophage

• Monocyte

• Neutrophil

• Basophil