Biology

Megaphylls are characteristic for____________? A. Ferns B. Seed plants (Correct) C. Both of these D. None of these        

In lysogenic cycle the process of spearation of phage DNA from the hosts chromosome and initiation of lytic cycle is called______________? A. Lysis B. Lysogeny C. Induction (Correct) D. Adsorption  

MSH is produced from___________? A. Anterior pituitary B. Median pituitary (Correct) C. Posterior pituitary D. None of these  

Diameter of thick filament is____________? A. 7 nm. B. 8 nm C. 16nm (Correct) D. 10-100 ?m.  

Stomata cover only ______________ of leaf surface? A. 0.03 – 0.04% B. 10% C. 1-2 % (Correct) D. 50%  

A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called_______________? A. Co-enzyme B. Blocker C. Inhibitor (Correct) D. Cofactor    

Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called__________? A. Cytosol B. Cisternae (Correct) C. Polysomes D. Cristae  

Breakdown of large molecules into smaller ones utilizing water molecules is_________? A. Hydration B. Hydrolysis (Correct) C. Dehydration synthesis D. Electrolysis