Use the Following Information to Answer the Questions Below

question 24

Multiple Choice

Use the following information to answer the questions below.
Some viruses can be crystallized and their structures analyzed. One such virus is Desmodium, or yellow mottle virus, which infects beans. This is a member of the tymovirus group and has a single-stranded RNA genome of ~6,300 nucleotides. Its virion is 25-30 nm in diameter, and is made up of 180 copies of a single capsid protein that self-associate to form each capsomere, which has icosahedral symmetry with 20 facets.
-If this virus has capsomeres with 20 facets, how many proteins form each one?

• A) 1
• B) 5
• C) ~6
• D) ~20
• E) ~180

---

Definitions:

Ecologists

Scientists who study the relationships among living organisms and their interactions with their natural and built environments.

Field Data

Information or observations collected directly from the environment or in the context of where phenomena naturally occur.

Earth's Ecosystems

Varied and complex communities of living organisms interacting with each other and their non-living environments across the Earth.

Earth Layers

The division of the Earth's interior into distinct layers, including the crust, mantle, and core, each with its unique properties and composition.