(PLEASE HELP)What is the main difference between noninfectious and infectious diseases? A. Noninfectious diseases are more serious than infectious diseases.
B. Infectious diseases are caused by pathogens; noninfectious diseases are not.
C. Infectious diseases are spread from person to person; noninfectious diseases are
not.
D. Noninfectious diseases are treatable; infectious diseases are not.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein. b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid. c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane. d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.