The likely causes of the abnormal protein could be, both choice 1 and choice 2. Both are pretty similar in their consequence, since they describe a mutation which either keeps RNA polymerase to keep going after it usually stops or the stop codon, is not a stop site anymore. This causes are well documented and some of them are causes of illness. The third option, although feasible, it would find many obstacles, since introns would be hard to traduce. So, to sump up, choice 1 and choice 2 are the correct options.
A chemical interaction is compelled by electrostatic forces which can occur both in vitro (studies are done outside living organisms), and in vivo (scientists conduct their studies with the use of whole living organisms). In simpler terms a chemical reaction is a change that occurs when two or more substances combine to form a new substance.
Thylakoid contains chlorophyll
Answer:
most likely b, a population is many living with each other and not just one species
The ecosysytem is a enviroment