- 19.19.1: Compare the structures of tobacco mosaic virus (TMV) and influenza ...
- 19.19.2: In Figure 16.4 (p. 307), you learned how bacteriophages were used t...
- 19.19.3: Are viruses generally considered living or nonliving? Explain.
- 19.19.4: Compare the effect on the host cell of a lytic (virulent) phage and...
- 19.19.5: The RNA virus in Figure 19.7 has a viral RNA polymerase that functi...
- 19.19.6: Why is HIV called a retrovirus?
- 19.19.7: If you were a researcher trying to combat HIV infection, what molec...
- 19.19.8: Describe enzymes that are not found in most cells but are necessary...
- 19.19.9: Describe two ways a preexisting virus can become an emerging virus.
- 19.19.10: Contrast horizontal and vertical transmission of viruses in plants.
- 19.19.11: TMV has been isolated from virtually all commercial tobacco product...
- 19.19.12: What aspect of an RNA virus makes it more likely than a DNA virus t...
- 19.19.13: Which of the following characteristics, structures, or processes is...
- 19.19.14: Emerging viruses arise by a. mutation of existing viruses. b. the s...
- 19.19.15: To cause a human pandemic, the H5N1 avian flu virus would have to a...
- 19.19.16: A bacterium is infected with an experimentally constructed bacterio...
- 19.19.17: RNA viruses require their own supply of certain enzymes because a. ...
- 19.19.18: Redraw Figure 19.7 to show the replicative cycle of a virus with a ...
- 19.19.19: The success of some viruses lies in their ability to evolve rapidly...
- 19.19.20: When bacteria infect an animal, the number of bacteria in the body ...
- 19.19.21: While viruses are considered by most scientists to be nonliving, th...
Solutions for Chapter 19: Biology
Full solutions for Campbell Biology | 9th Edition
A subdivision of the benthic zone characterized by extremely high pressures, low temperatures, low oxygen, few nutrients, and no sunlight.
Arctic (A) air mass
A bitterly cold air mass that forms over the frozen Arctic Ocean.
A well in which the water rises above the level where it was initially encountered.
Common term for sand and gravel deposits in a stream channel.
Zone of inclined seismic activity that extends from a trench downward into the asthenosphere.
A sequence of numbers that approximates the mean distances of the planets from the Sun.
The study of the universe.
A layer of coarse pebbles and gravel created when wind removed the finer material.
A method of locating stellar objects much like the coordinate system used on Earth’s surface.
An organism whose genetic material is enclosed in a nucleus; plants, animals, and fungi are eukaryotes.
A permanent stream that traverses a desert and has its source in well-watered areas outside the desert.
A short-focal-length lens used to enlarge the image in a telescope. The lens nearest the eye.
The process of generating more than one rock type from a single magma.
An eclipse of a star or planet by the Moon or a planet.
The upper part of the ocean into which any sunlight penetrates.
A structure that results from the emplacement and crystallization of magma beneath the surface of Earth.
As the result of paleomagnetic studies in the 1950s, researchers proposed that either the magnetic poles migrated greatly through time or the continents had gradually shifted their positions.
The layer of rock and mineral fragments that nearly everywhere covers Earth’s surface.
A climate found north of the humid continental climate and south of the polar climate and characterized by bitterly cold winters and short, cool summers. Places within this climatic realm experience the highest annual temperature ranges on Earth.
A term applied to the B horizon of a soil profile.