All EXCEPT which of the following are characteristics of retroviruses? All EXCEPT which of the following...
All EXCEPT which of the following are characteristics of retroviruses?
All EXCEPT which of the following are characteristics of retroviruses?
| cause lysis of the host cell upon infection | |
| integration of the viral genome into the host genome | |
| genome composed of RNA | |
| synthesis of DNA from an RNA template by reverse transcriptase, a virally-encoded enzyme |
Homework Answers
Option A) cause lysis of the host cell upon infection.
Retroviruses are a family of enveloped viruses which replicate in the host cell through the process of reverse trancription. These viruses usually undertake lytic cycle without actual lysis.
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All EXCEPT which of the following are characteristics of
retroviruses?
All EXCEPT which of the following...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle of viral Many bacterial cells containing viral DNA are produced 8) Viral DNA is incorporated into the host genome C) Th e viral genome replicates without destroying the host The bacterial host provides the nucleotides, enzymes, ribosomes and other co requires to make viral components D) 2. What is the function of the viral glycoproteins that are present in an enveloped virus? A) They...
(Begins with viral genome and ends with proteins) Hint: Remember that retroviruses synthesize genetic information in...
(Begins with viral genome and
ends with proteins)
Hint: Remember that retroviruses synthesize genetic information
in the reverse direction.
Order the terms to list the steps from HIV retroviral genome replication to protein synthesis. Select the correct steps (6 items) Drag and drop into the appropriate area) Central Dogma of a Retrovirus Begin with viral genome Translation of viral proteins by host ribosomes 1 (+) ssRNA genome dsDNA genome egration into host genome 2 RNA polymerase II transcription Reverse transcriptase...
which boxes go in the blanks Label the figure to identify drugs that block the life...
which boxes go in the blanks
Label the figure to identify drugs that block the life cycle of HIV. Fusion inhibitors Infection begins with HIV fusion Integrase inhibitors o HIV proteins Detective virus Uncut HIV protease N RT inhibitors Hry HIV protein RNA Once inside a host cell, HIV uncoats and its reverse transcriptase (RT) makes DNA from the viral RNA genome. Protease inhibitors Incomplete HIV DNA HIV RNA transcriptase Completed HIV DNA Viral DNA is transcribed and translated into...
- WERS ON THE SCANTRON SHEET PROVIDE 1. Viruses are known as obligate, intracellular A) Organisms...
- WERS ON THE SCANTRON SHEET PROVIDE 1. Viruses are known as obligate, intracellular A) Organisms B) Symbionts C) Ornelles D) Pass 2. Which of the following is a property of life shared by pokaryote ndaryote A) nucleic acids used to store hereditary information B) the capacity to evolve C) the ability to replicate (reproduce) without invading a host cell D) presence of proteins E) the capacity to mutate , NOV 3. Which of the following is characteristic of the...
Question 7 (2 points) Retroviruses require which of the following enzymes in order to enter the...
Question 7 (2 points) Retroviruses require which of the following enzymes in order to enter the host cells genome? Transcriptase Integrase Both reverse transcriptase and protease Protease Reverse transcriptase Both integrase and reverse transcriptase
25. Which of the following is not true concerning eukaryotic mRNA processing (A) addition of a...
25. Which of the following is not true concerning eukaryotic mRNA processing (A) addition of a 3' poly-A tail (D) occurs in the nucleus (C) intron splicing (B) addition of a S' cap (E) occurs in the cytoplasm 26. Which of the following is involved in maintaining lysogeny in (A) PRE (B) PRM (C) PRI (D) PRO (E) all of the choices are correct Use the following diagram to answer questions 27-28. Each circle represents a DNA molecule and the...
all please 27. Which of the following is not a mode of action of antivirals? A)...
all
please
27. Which of the following is not a mode of action of antivirals? A) block penetration; B) block transcription and translation; C) inhibit DNA synthesis; D) block maturation; E) bind to ergosterol 28. Lysogeny is A) an infection by alytic phage; B) a condition when a viral genome is integrated into the host chromosome but does not result in the lysis of the host cell; C) when the infecting phage exists as a prophage; D) caused by a...
Question 12 100 pts The fact that DNA synthesis inhibitors in humans prevents retroviruses from being...
Question 12 100 pts The fact that DNA synthesis inhibitors in humans prevents retroviruses from being infective led to hypothesize the existance of? DNA polymerase reverse transcriptase restriction enzymes telomerase Question 11 In the synthesis of the prokayotic DNA, this keeps the fork from re-annealing 100 pts Poll multiple RNA primers primane O helicane binding protein Question 13 100 pts Analysis of a cell line that rapidly transforms into a tumor cell line demonstrated an increased mutation rate within the...
COVID 19 is a positive sense single stranded RNA virus. Which of the following is the...
COVID 19 is a positive sense single stranded RNA virus. Which of the following is the case, given this information? It integrates its RNA into a host cell this group of viruses is not generally known to infect humans It requires viral reverse transcriptase to convert its genome into a positive sense RNA strand it has a double stranded genome the genome does not need to be transcribed in order for viral proteins to be produced
Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT) upon...
Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT) upon the HIV infection? Select one: a. RT catalyzes initial synthesis of ssDNA using viral genomic RNA as the template. b. The first RNA template is degraded after ssDNA synthesis. c. The whole process is completed after synthesis of dsDNA. d. tRNAs are adopted as the first primers. e. None of these
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle of viral Many bacterial cells containing viral DNA are produced 8) Viral DNA is incorporated into the host genome C) Th e viral genome replicates without destroying the host The bacterial host provides the nucleotides, enzymes, ribosomes and other co requires to make viral components D) 2. What is the function of the viral glycoproteins that are present in an enveloped virus? A) They...
(Begins with viral genome and
ends with proteins)
Hint: Remember that retroviruses synthesize genetic information
in the reverse direction.
Order the terms to list the steps from HIV retroviral genome replication to protein synthesis. Select the correct steps (6 items) Drag and drop into the appropriate area) Central Dogma of a Retrovirus Begin with viral genome Translation of viral proteins by host ribosomes 1 (+) ssRNA genome dsDNA genome egration into host genome 2 RNA polymerase II transcription Reverse transcriptase...
which boxes go in the blanks
Label the figure to identify drugs that block the life cycle of HIV. Fusion inhibitors Infection begins with HIV fusion Integrase inhibitors o HIV proteins Detective virus Uncut HIV protease N RT inhibitors Hry HIV protein RNA Once inside a host cell, HIV uncoats and its reverse transcriptase (RT) makes DNA from the viral RNA genome. Protease inhibitors Incomplete HIV DNA HIV RNA transcriptase Completed HIV DNA Viral DNA is transcribed and translated into...
- WERS ON THE SCANTRON SHEET PROVIDE 1. Viruses are known as obligate, intracellular A) Organisms B) Symbionts C) Ornelles D) Pass 2. Which of the following is a property of life shared by pokaryote ndaryote A) nucleic acids used to store hereditary information B) the capacity to evolve C) the ability to replicate (reproduce) without invading a host cell D) presence of proteins E) the capacity to mutate , NOV 3. Which of the following is characteristic of the...
Question 7 (2 points) Retroviruses require which of the following enzymes in order to enter the host cells genome? Transcriptase Integrase Both reverse transcriptase and protease Protease Reverse transcriptase Both integrase and reverse transcriptase
25. Which of the following is not true concerning eukaryotic mRNA processing (A) addition of a 3' poly-A tail (D) occurs in the nucleus (C) intron splicing (B) addition of a S' cap (E) occurs in the cytoplasm 26. Which of the following is involved in maintaining lysogeny in (A) PRE (B) PRM (C) PRI (D) PRO (E) all of the choices are correct Use the following diagram to answer questions 27-28. Each circle represents a DNA molecule and the...
all
please
27. Which of the following is not a mode of action of antivirals? A) block penetration; B) block transcription and translation; C) inhibit DNA synthesis; D) block maturation; E) bind to ergosterol 28. Lysogeny is A) an infection by alytic phage; B) a condition when a viral genome is integrated into the host chromosome but does not result in the lysis of the host cell; C) when the infecting phage exists as a prophage; D) caused by a...
Question 12 100 pts The fact that DNA synthesis inhibitors in humans prevents retroviruses from being infective led to hypothesize the existance of? DNA polymerase reverse transcriptase restriction enzymes telomerase Question 11 In the synthesis of the prokayotic DNA, this keeps the fork from re-annealing 100 pts Poll multiple RNA primers primane O helicane binding protein Question 13 100 pts Analysis of a cell line that rapidly transforms into a tumor cell line demonstrated an increased mutation rate within the...
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