What is the correct definition of an opportunistic infection? person who appears healthy, but is infected with a disease

person who appears ill, but is untouched by a disease

a disease that attacks a person with a healthy immune system

a disease that attacks a person with a weakened immune system

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors.b) transcription from the host cell rna polymerase introduces numerous mutations.c) capsid proteins from the host cell can replace the viral capsid.d) viral rna is translated by host cell ribosomes.

When comparing the digestive and urinary system, we can conclude that they both

What is the most likely reason the professional group binds its members to follow these rules?