Given below are two statements :
Statement I : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.
Statement II : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes.
In the light of above statements, choose the most appropriate answer from the options given below
Regarding catalytic cycle of an enzyme action, select the correct sequential steps :
A. Substrate enzyme complex formation.
B. Free enzyme ready to bind with another substrate.
C. Release of products.
D. Chemical bonds of the substrate broken.
E. Substrate binding to active site.
Choose the correct answer from the options given below :
Identify the correct option (A), (B), (C), (D) with respect to spermatogenesis.
Match List I with List II:
List - I | List - II | ||
---|---|---|---|
A. | Mesozoic Era | I. | Lower invertebrates |
B. | Proterozoic Era | II. | Fish & Amphibia |
C. | Cenozoic Era | III. | Birds & Reptiles |
D. | Paleozoic Era | IV. | Mammals |
Choose the correct answer from the options given below :