Explain the role that mucus plays in fighting off diseases. How do mucins specifically help in this process?

Which of these is a long-term goal? a. i want to lose two pounds in a month. b. dylan wants to finish reading his favorite book this week. c. thomas plans to invite his parents to his home for dinner. d. daisy wants to write a children’s book on nutrition

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.

The average ages at which an individual displays certain abilities are known as