Which side of the heart is the bicuspid valve on?
left
posterior
anterior
ri...
Answers: 2
Health, 23.06.2019 04:00
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.
Answers: 1
Health, 23.06.2019 04:50
Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?
Answers: 2
History, 13.08.2020 01:01
Mathematics, 13.08.2020 01:01
Mathematics, 13.08.2020 01:01
Chemistry, 13.08.2020 01:01
Mathematics, 13.08.2020 01:01