Answer:
Option D
Explanation:
Diagram is attached.
Capsid protein is a form of structural protein which usually forms part of a complex which later produces protective shell around the nucleic acid in a virus. It is also referred to as coat protein or head protein.
Capsid acts as a distinguishing feature for identifying an integrated viral genome, plasmids and other genetic material of viruses. In fact, viruses are termed as organisms that encode capsid proteins.
Hence, option D is correct
He discovered that cells come from cells that already exist
Explanation:
It can do three things:
1) It can erode/weather to form new sediments that later become a new sedimentary rock.
2) It can undergo heat and pressure changes and become metamorphic rock.
3) It can be melted and solidify into igneous rock.
Once this happens, it can repeat any of these processes.