Assume a 100 base pair dna double helix contains 45 cytosines, how many adenines are there in this double helix?
this is pretty urgent pls !

Variety of living organisms; includes genetic, species, and ecological types.

In this assignment, you will analyze an example of speciation by researching the finches of the galapagos islands. then you will answer questions to construct explanations and draw conclusions based on the information you gather. someone plz !

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.