In the lytic life cycle of phages. Select one: O a. the cell typically dies, releasing many copies of the virus O b. the viral capsid is assembled according to the genetic information of the bacterium O c. the entire phage is taken into the bacterium O d. DNA replication is not part of the life cycle O e. phage DNA is incorporated into the host cell's genome

In the lytic life cycle of phages. Select one: O a. the cell typically dies, releasing many copies of the virus O b. the viral capsid is assembled according to the genetic information of the bacterium O c. the entire phage is taken into the bacterium O d. DNA replication is not part of the life cycle O e. phage DNA is incorporated into the host cell's genome

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter17: The Immune System And Disease

Section: Chapter Questions

Problem 2ACQ: Figure 17.6 Influenza virus is packaged in a viral envelope, which fuses with the plasma membrane....

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The lipid content of an enveloped virus is produced from freely available lipids O viral made membrane O host mernbrane O viruses do not use membranes O self-replicating membrane from the virus
Match the terms 1Genome surrounded by a protein coat 2Functional viral particle capable to infect a new host cell 3Infectious protein 4Infectious agent that needs helper virus for infection 5T4 enzyme that creates holes in the E. coli plasma membrane 6When a temperate phage stimulates their bacterial host tostart producing a toxin (e.g. cholera, shiga) 7Virus that infects bacteria 8Hand N spikes 9Virus without an envelope 10Most common and best studies virulent phage of E. coli 11Protein coat that surrounds viral genome 12:true or false : some viruses can cause cancer [ Choose ] lambda True pathogenic stimulation False Nucleocapsid lysosome Naked virus induction lysozyme Flu viruses tobacco mosaic virus lysogeny capsid Lysogenic conversion Holin Prion satellite bacteriophage (or just phage) T4 Virion Streptococcus
. EVOLUTION CONNECTION The success of some viruses lies intheir ability to evolve rapidly within the host. Such viruses evadethe host’s defenses by mutating and producing many alteredprogeny viruses before the body can mount an attack. Thus, theviruses present late in infection differ from those that initiallyinfected the body. Discuss this as an example of evolution inmicrocosm. Which viral lineages tend to predominate?
2 3 inte tion of Lormhda. ne att si ucated betwee de ne att sites and go ns one te n vacter aged ot utilize doot ractose ato la t don s gal* uc Integration to form prophage om SOward cor coct some cro on! ni imple ex 2 3 bio* gal* 14. The figure provided portrays the integration of Lambda phage into a host chromosome at the att site, located between the gal+ and bio+ genes. This prophage may disintegrate from the host carrying with it host genes, such as gal+ and/or bio+ and go on to transduce another host bacterium. How would one determine if a gal- host bacterium's phenotype was changed from gal- to gal+? To clarify, the minus version cannot utilize galactose as a carbon source for growth because it does not produce galactase, the enzyme that hydrolyzes galactose into monomeric sugars. There is a straight forward answer/solution to this – do not concoct some crazy solution! Think simple experiment.
The viral______play(s) a role in attaching a virion to the host cell. core capsid envelope both b and c
Which statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses replicate outside of the cell. d. Most viruses are easily visualized with a light microscope.
There have been recurring cases of mad-cow disease in the United Kingdom since the mid-1990s. Mad-cow disease is caused by a prion, an infectious particle that consists only of protein. In 1986, the media began reporting that cows all over England were dying from a mysterious disease. Initially, there was little interest in determining whether humans could be affected. For 10 years, the British government maintained that this unusual disease could not be transmitted to humans. However, in March 1996, the government did an about-face and announced that bovine spongiform encephalopathy (BSE), commonly known as mad-cow disease, can be transmitted to humans, where it is known as variant Creutzfeldt-Jakob disease (VCJD). As in cows, this disease eats away at the nervous system, destroying the brain and essentially turning it into a spongelike structure filled with holes. Victims experience dementia; confusion; loss of speech, sight, and hearing; convulsions; coma; and finally death. Prion diseases are always fatal, and there is no treatment. Precautionary measures taken in Britain to prevent this disease in humans may have begun too late. Many of the victims contracted it over a decade earlier, when the BSE epidemic began, and the incubation period is long (VCJD has an incubation period of 10 to 40 years). A recent study concluded that 1 in 2,000 people in Great Britain carry the abnormally folded protein that causes VCJD. In spite of these numbers, the death rate from VCJD remains low. It is not clear whether this means that the incubation period for the disease is much longer than previously thought, or whether they may never develop the disease. How can a prion replicate itself without genetic material?
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Describe enzymes that are not found in most cells but are necessary forthe replication of certain types of viruses.
T of 3 eBook eferences Home x Mc Graw Hill Take X mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Fblackboard.matc.edu%252Fwebapps% Required information The viral capsid @ 2 W Multiple Choice → #3 Conte x engulfs the viral spikes. surrounds the viral matrix protein. e с Home x $ 54 r becomes completely enclosed by the region of the cell membrane into which the spikes and matrix protein are embedded. * 816 N X 8 O 1 Quest x 9 ✓ O Help
Which cellular organelle or structure produces viral envelope?* OEndoplasmic reticulum. Free ribosomes O Nuclear envelope. Plasma membrane ) Nucleus.