The primary cell wall is mainly made up of

• lignin

• pectin

• cellulose

• protein

Which of the following is always absent in prokaryotic cells?

• Ribosome

• Mitochondria

• DNA

• Cell wall

Objects less than 0.2 $\mathrm{\mu }$m in size cannot be see an under light microscope because

• the wave length of visible light is 3900- 7800 Å

• only two types of lenses are used

• maximum magnifying power of ocular lens is 20 X

• maximum magnifying power of objective lens is 100 X

164.

Pseudopodia are produced by

• plasma cell

• mast cell

• adipose cell

• fibroblast cell

The apoplast is located

• outside the plasma membrane

• in the entire cytosol

• on both sides of plasma membrane

• in the plastidial content

ATP synthesis in cell requires

• H⁺ gradient across the membrane

• K⁺ gradient across the membrane

• PO₄ ^3- gradient across the membrane

• Ca²⁺ gradient across the membrane

The eukaryotic cells have all of the followings except

• peptidoglycan in the cell wall

• the 80 S ribosome

• nuclear membrane

• mitochondria

Peroxisomes have

• ribosome

• DNA

• catalase enzyme

• centrosome

Two membrane envelops is found in

• mitochondria, Golgi apparatus and chloroplast

• mitochondria, nucleus and chloroplast

• nucleus, Golgi apparatus and endoplasmic reticulum

• nucleus, ribosome and chloroplast

Genes for maternal inheritance are located in

• Golgi bodies

• mitochondria

• lysosome

• nucleolus