Homework Answers
- CLASSIFICATION: on the basis of the unique feature of chemistry and replication of corona viruses classified into two groups which is differ in bothantigenic determinants and culturing requirements:
- 229E-like - Isolated in human embryonic fibroblast cultures.
- OC43-like - isolated , or adapted to growth in suckling mouse brain.
2. MECHANISM OF ACTION:
- The virus enters the host cell , and the uncoated genome is transcribed and translated. the mRNA from a unique
"nested set" sharing a common 3' end. new virions form by budding from host cell membrane.
3.Cite of my information : coronaviruses structure and genome expression. J Gen Virol (PudMed).
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How are corona viruses classified? - 2 points What is the mechanism (machinery and cellular process)...
please answer thank you! Questions: 1. List the components that all types of viruses have in...
please answer thank you!
Questions: 1. List the components that all types of viruses have in common. Then describe the function of each component. (Short answer-2 points- 1 for a complete and correct list of components and 1 for correctly assigning the function for each component. 2. Viruses are living things that function entirely on their own (True/False)- 1 point. 3. List 2 different ways that a virus can gain access to the body of the host (Short answer-1 point)...
1. Which of the following is a valid argument against including viruses in the group of...
1. Which of the following is a valid argument against including viruses in the group of ‘life’? a) Viruses are very small b) SomeviruseshavegeneticmaterialmadeofRNA,notDNA c) Viruses are not capable of independent reproduction d) Virusesinfectawiderangeofhosts e) Viruses can evolve very rapidly 2. M13 is a bacteriophage (a type of virus) that infects E. coli cells, and is capable of integrating into the host genome, becoming a prophage. It is likely to enter the ____________ when conditions are not conducive for rapid...
1. Complete this table. Microbes Archaea Bacteria Protists Viruses Considered to be alive? Cellular or acellular?...
1. Complete this table. Microbes Archaea Bacteria Protists Viruses Considered to be alive? Cellular or acellular? If cellular: prokaryotic or eukaryotic? If cellular: unicellular, multicellular, or either? General description of structure Does this category include producers? Does this category include consumers? 2. List the three ways that HIV is spread. 3. HIV makes people sick primarily by destroying one specific body system. Name that system. 4. HIV is a retrovirus. Retroviruses get their name by causing the cells they infect...
Modified True/False The types of cells and organisms) that a virus can infect is known as...
Modified True/False The types of cells and organisms) that a virus can infect is known as its infective dose Toe 6) Poxviruses are viruses that infect bacteria. Some viral infection exist in a chronic latent state in which the virus lies dormant in the host for long periods of time and can become active under certain conditions. Bonus Questions (1/2 point each) 1) Researchers are working to develop viruses that attack cancer cells which are known as للحلال
Question 1 1 pts Which of the following is true? Viruses cannot evolve because they are...
Question 1 1 pts Which of the following is true? Viruses cannot evolve because they are not technically alive; they cannot replicate on their own When viruses hijack a host's cells to replicate, mistakes made in the copying of their DNA or RNA can generate a huge number of genetic variants in the virus population A mutation in the molecules involved in binding to a host cell that allows binding to a new host species will not affect the virus's...
a,b and d please 1. (6 pts) The genomes of viruses are diverse. For animal viruses,...
a,b and d please
1. (6 pts) The genomes of viruses are diverse. For animal viruses, they often encode and bring own polymerases to the infected host cell for viral replication. a. (1 pt) Viruses with single-stranded RNA as their genome for which the nucleotide sequence is the same as the viral mRNA are said to be viruses. (Circle one best answer.) A) plus-stranded; B) minus-stranded; C) mRNA-like; D) complete; E) defective b. (1 pt) A virus is an obligate...
Modified True False The types of cells (and organisms) that a virus can infecti known as...
Modified True False The types of cells (and organisms) that a virus can infecti known as its infective dose. Poxviruses are viruses that infect bacteria. Some viral infection exist in a chronic latent state in which the virus lies dormant in the host for long periods of time and can become active under certain conditions. Bonus Questions (1/2 point each) 1) Researchers are working to develop viruses that attack cancer cells which are known as Oncones
NUMEWORK 1. Compare and Contrast Viruses, Viroids, and Prions to Bacterial cells: Bacteria Viruses Virolds Prions...
NUMEWORK 1. Compare and Contrast Viruses, Viroids, and Prions to Bacterial cells: Bacteria Viruses Virolds Prions Width Length Nucleic Acid (type/s) Protein (present/absent) Cellular (yes/no) Cell membrane (present/absent) Functional ribosome (present/absent) Growth (yes/no) Self-replicating (yes/no) Responsiveness (present/absent) Metabolism (present/absent) 2. Compare and Contrast Bacteriophage and Animal Virus Replication: Bacteriophage Animal Virus Attachment Penetration Uncoating (if yes, how?) Site of synthesis Site of assembly Mechanism of release
1. Use the following figure and information to answer the question(s) below. 100,000 Virus A -...
1. Use the following figure and information to answer the question(s) below. 100,000 Virus A - Virus B Number Viruses 10,000 - per millilter of culture 1000 - ---- 30 60 120 Time After Infection in minutes) Cells were infected with approximately 1000 copies of either virus A or virus B at the O time point. At five-minute intervals, a sample of the virus and cell mixture was removed. The intact cells were removed from the sample, and the number...
Objective: At this point, you should be developing the skills to become a self-learner. The objective of this extra credit assignment is to provide a topic, using your background knowledge, you c...
Objective: At this point, you should be developing the skills to become a self-learner. The objective of this extra credit assignment is to provide a topic, using your background knowledge, you can learn independently: viruses Background: Viruses are considered to be at the borderline of life because they have the ability to reproduce, but they lack a nervous system. Viruses reproduce by infecting cells and "hijacking" the mechanisms in the cell to replicate, meaning that they make more copies of...
please answer thank you!
Questions: 1. List the components that all types of viruses have in common. Then describe the function of each component. (Short answer-2 points- 1 for a complete and correct list of components and 1 for correctly assigning the function for each component. 2. Viruses are living things that function entirely on their own (True/False)- 1 point. 3. List 2 different ways that a virus can gain access to the body of the host (Short answer-1 point)...
1. Complete this table. Microbes Archaea Bacteria Protists Viruses Considered to be alive? Cellular or acellular? If cellular: prokaryotic or eukaryotic? If cellular: unicellular, multicellular, or either? General description of structure Does this category include producers? Does this category include consumers? 2. List the three ways that HIV is spread. 3. HIV makes people sick primarily by destroying one specific body system. Name that system. 4. HIV is a retrovirus. Retroviruses get their name by causing the cells they infect...
Modified True/False The types of cells and organisms) that a virus can infect is known as its infective dose Toe 6) Poxviruses are viruses that infect bacteria. Some viral infection exist in a chronic latent state in which the virus lies dormant in the host for long periods of time and can become active under certain conditions. Bonus Questions (1/2 point each) 1) Researchers are working to develop viruses that attack cancer cells which are known as للحلال
Question 1 1 pts Which of the following is true? Viruses cannot evolve because they are not technically alive; they cannot replicate on their own When viruses hijack a host's cells to replicate, mistakes made in the copying of their DNA or RNA can generate a huge number of genetic variants in the virus population A mutation in the molecules involved in binding to a host cell that allows binding to a new host species will not affect the virus's...
a,b and d please
1. (6 pts) The genomes of viruses are diverse. For animal viruses, they often encode and bring own polymerases to the infected host cell for viral replication. a. (1 pt) Viruses with single-stranded RNA as their genome for which the nucleotide sequence is the same as the viral mRNA are said to be viruses. (Circle one best answer.) A) plus-stranded; B) minus-stranded; C) mRNA-like; D) complete; E) defective b. (1 pt) A virus is an obligate...
Modified True False The types of cells (and organisms) that a virus can infecti known as its infective dose. Poxviruses are viruses that infect bacteria. Some viral infection exist in a chronic latent state in which the virus lies dormant in the host for long periods of time and can become active under certain conditions. Bonus Questions (1/2 point each) 1) Researchers are working to develop viruses that attack cancer cells which are known as Oncones
NUMEWORK 1. Compare and Contrast Viruses, Viroids, and Prions to Bacterial cells: Bacteria Viruses Virolds Prions Width Length Nucleic Acid (type/s) Protein (present/absent) Cellular (yes/no) Cell membrane (present/absent) Functional ribosome (present/absent) Growth (yes/no) Self-replicating (yes/no) Responsiveness (present/absent) Metabolism (present/absent) 2. Compare and Contrast Bacteriophage and Animal Virus Replication: Bacteriophage Animal Virus Attachment Penetration Uncoating (if yes, how?) Site of synthesis Site of assembly Mechanism of release
1. Use the following figure and information to answer the question(s) below. 100,000 Virus A - Virus B Number Viruses 10,000 - per millilter of culture 1000 - ---- 30 60 120 Time After Infection in minutes) Cells were infected with approximately 1000 copies of either virus A or virus B at the O time point. At five-minute intervals, a sample of the virus and cell mixture was removed. The intact cells were removed from the sample, and the number...
Objective: At this point, you should be developing the skills to become a self-learner. The objective of this extra credit assignment is to provide a topic, using your background knowledge, you can learn independently: viruses Background: Viruses are considered to be at the borderline of life because they have the ability to reproduce, but they lack a nervous system. Viruses reproduce by infecting cells and "hijacking" the mechanisms in the cell to replicate, meaning that they make more copies of...
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