What is the bundle of his?

a. a collection of heart muscle components that specialize in preventing the backward flow of blood

b. a collection of valves used for electrical conduction that allow the blood vessels to contract

c. a collection of heart muscle components specializing in electrical conduction that allow the ventricles to contract

d. a collection of chambers specialized for electrical conduction that allow the ventricles to expand

c

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6300 nucleotides. its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.if the yellow mottle virus begins its infection of a cell by using its genome as mrna, which of the following would you expect to be able to measure? a) replication rateb) transcription ratec) translation rated) formation of new transcription factors