Chapter 21 retrovirus Question - Multiple Choice Part A Do all viruses that contain RNA also have reverse transcriptase? Yes, all RNA viruses are retrovirus. No, some RNA viruses use the host machinery to make protein, but, no viral DNA is ever made. Yes, the only way to make replicate an RNA virus is to reverse transcribe the RNA into DNA. No, some RNA viruses also have DNA and do not need reverse transcriptase Yes, Reverse transcriptase is an enzyme in all viruses. Submit Request Answer

Chapter 21 retrovirus Question - Multiple Choice Part A Do all viruses that contain RNA also have reverse transcriptase? Yes, all RNA viruses are retrovirus. No, some RNA viruses use the host machinery to make protein, but, no viral DNA is ever made. Yes, the only way to make replicate an RNA virus is to reverse transcribe the RNA into DNA. No, some RNA viruses also have DNA and do not need reverse transcriptase Yes, Reverse transcriptase is an enzyme in all viruses. Submit Request Answer

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter24: Viruses And Subviral Agents

Section: Chapter Questions

Problem 10TYU: Arrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA...

See similar textbooks

Similar questions

Which statement is true? A virion contains DNA and RNA Viruses are acellular Viruses replicate outside of the cell Most viruses are easily visualized with a light microscope.
Which statement is true of viroids? They are single-stranded RNA particles They reproduce only outside of the cell They produce proteins They affect both plants and animals.
MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961. Why are medical professionals so concerned when antibiotics exist that can kill MRSA? MRSA can transfer methicillin-resistance to other bacteria Patients are not treated with correct antibiotics rapidly enough to prevent serious illness MRSA could acquire additional antibiotic resistance genes from other bacteria to become a “super bug." All of the above.
Arrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA integrated into host DNA 2.viral proteins synthesized on host ribosomes 3. viral DNA uses host enzymes to transcribe viral RNA 4. reverse transcriptase catalyzes synthesis of ssDNA 5. synthesis of second DNA strand (a) 5, 2, 1, 3, 4 (b) 5, 2, 3, 4, 1 (c) 4, 5, 1, 3, 2 (d) 4, 1, 2, 3, 5 (e) 2, 1, 3, 4, 5
Which statement is true of reverse transcriptase? It is a nucleic acid It infects cells It transcribes RNA to make DNA. d. It is a lipid.
viruses:1. Why must primary cell cultures be restarted every so often when preparing primary cell cultures to observe morphological changes caused by cells infected by a virus? Why are tumor cells preferred? 2. Why are non-enveloped viruses generally more resistant to disinfectants than are enveloped viruses? 3. A public health physician isolated large number of phages from rivers used as a source of drinking water in western Africa. They physician is very concerned that humans might become ill from drinking this water, although she knows that the phages specifically attack bacteria. Why is she concerned?
What cells does HIV infect? Explain how HIV enters these cells HIV is a retrovirus. What do retroviruses do once they have entered a host cell? Why is there little to no immune response following infection by HIV? Why is it difficult to diagnose? What is the difference between HIV and AIDS? How does HIV lead to AIDS? How is HIV transmitted? There isn't a drug to cure HIV although drugs are used to keep the viral load low to prevent regression into AIDS. Explain how these drugs work.
Viruses with reverse transcriptase enzyme can make a DNA copy out of its RNA genome. What implications can this capability do in health hazards?
VIRUS why do they steal cell membranes why are they not considered alive
The Ebola virus is an enveloped, helical ssRNA virus that replicates quickly. Given this information, which one of the following is a reason why Ebola infection is difficult to fight (both by our bodies and by treatments)? Question 6 options: Because it has many genes and thus replication is slow. Because it doesn't have a membrane. Because viral RNA polymerases make a lot of mistakes. Because it can integrate into the host cell DNA.
Which of the following statements regarding viral genomes is FALSE? Question options: viral genomes are always comprised of RNA viral genomes are smaller than the genomes of cellular life viral genomes can be either single-stranded or double-stranded viruses can have as few as three genes viral genomes do not encode ribosomal RNAs all these statements are TRUE The ______________ of a virus is a phospholipid bilayer with embedded proteins and glycoproteins Question options: capsid chromosome envelope nucleocapsid spike receptor
Question 3 How does a virus ‘choose’ the cell it will infect? A. There is no choice involved; viruses infect any cell its environment B. It chooses cells based on their replication capacity C. It is attracted by a gradient of chemokines to the cell D. It recognizes/interacts with cell-surface molecules and attaches to the cell it will infect