Which tissue remains more active during autumn

Which tissue is more apt to line a lumen ?

Which one is more active , potassium or aluminium ?

Which of the following is more active in a nucleophilic substitution reaction :-

Tissue plasminogen activator:

A thermostable DNA polymerase, which remains active during the high temperature induced denturation of double j- stranded DNA is isolated from a bacterium

Which chromosome remains condense during interphase :-

Tissue plasminogen activator is