Among the following, the narrow spectrum antibiotic is : (1) Penicillin G (2) Ampicillin (3) Amoxycillin (4) Chloramphenicol
Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.
The Golgi complex participates in : (1) Respiration in bacteria (2) Formation of secretory vesicles (3) Fatty acid breakdown (4) Activation of amino acid
Which of the following is true for nucleolus? (1) It takes part in spindle formation. (2) It is a membrane-bound structure. (3) Larger nucleoli are present in dividing cells. (4) It is a site for active ribosomal RNA synthesis.
Which one of the following statements is not correct? (a) The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium. (b) Enzymes catalyse mainly bio-chemical reactions. (c) Coenzymes increase the catalytic ...
Which of the following statements is not correct? (a) Ovalbumin is a simple food reserve in egg white. (b) Blood proteins thrombin and fibrinogen are involved in blood clotting. (c) Denaturation makes the proteins more active. (d) Insulin maintains sugar ...