Final answer:
The statement that both the capsid and the envelope can promote viral binding to a host cell is true, specifically, glycoproteins on the envelope or sometimes the capsid itself help viruses to attach to host cells. The true structure-related statement is that glycoproteins help the virus attach to the host cell, and not all viruses have DNA as genetic material.
Step-by-step explanation:
The correct answer to whether both the capsid and the envelope can promote viral binding to a host cell is true. The statement about virus structure that is true is d. Glycoproteins help the virus attach to the host cell. The capsid is the protein shell of the virus, made up of subunits called capsomeres, and can sometimes be involved in the binding to host cells, as seen in viruses like adenovirus which uses spikes from its capsid. However, not all viruses have an envelope; it is an additional layer present in some viruses like HIV and influenza, which surrounds the capsid. This envelope often contains glycoproteins which are crucial for binding to the host cell. The glycoproteins recognize and bind to specific receptors on the surface of the host cell, initiating infection.
Regarding the information that DNA is the genetic material in all viruses, this is false as some viruses, such as retroviruses, contain RNA as their genetic material. Additionally, the viral capsid can aid the host cell in producing more copies of the viral genome once the virus has entered the cell.