Answer the following question given this paragraph: 22.1 Introduction Viruses are the smallest biological particle (the tiniest are only 20 nm in diameter). However, they are not biological organisms so they are not classified in any kingdom of living things. They do not have any organelles and cannot respire or perform metabolic functions. Viruses are merely strands of DNA or RNA surrounded by a protective protein coat called a capsid. Viruses only come to life when they have invaded a cell. Outside of a host cell, viruses are completely inert. Since first being identified in 1935, viruses have been classified into more than 160 major groups. Viruses are classified based on their shape, replication properties, and the diseases that they cause. Furthermore, the shape of a virus is determined by the type and arrangement of proteins in its capsid. Viruses pathogenic to humans are currently classified into 21 groups. Viruses can also attack bacteria and infect bacterial cells. Such viruses are called bacteriophages. Q: The shape of a virus is determined by the type and arrangement of proteins in its what? Choices: - enamel - anode - nuclei - capsid A:
capsid

Answer the following question given this paragraph: Earthquakes with a magnitude in the 9 range are rare. The United States Geological Survey lists five such earthquakes on the moment magnitude scale since 1900 (see Figure below ). All but one, the Great Indian Ocean Earthquake of 2004, occurred somewhere around the Pacific Ring of Fire. Q: Since 1900, four of the five earthquakes of the greatest magnitude occurred near what appropriately nicknamed pacific location? Choices: - shower of fire - quake epicenter - seismic zone - ring of fire A:
ring of fire

Answer the following question given this paragraph: The amount of charge, , held by each plate is given by where again is the voltage difference between the plates and is the capacitance of the plate configuration. Capacitance can be thought of as the capacity a device has for storing charge . In the parallel plate case the capacitance is given by where is the area of the plates, is the distance between the plates, and is the permittivity of free space whose value is . Q: What can be thought of as the capacity a device has for storing charge? Choices: - potential - velocity - resonance - capacitance A:
capacitance

Answer the following question given this paragraph: Q: What is the name given to anything that has mass and takes up space? Choices: - organism - molecule - vacuum - matter A:
matter