What is the typical reproduction cycle of a DNA virus?

1 Answer

Answer :

A typical virus has proteins on its capsid that bind to the outer membrane of the host cell. In the place where the virus adhered viral proteins act to break the cell membrane and then the virus injects its DNA molecules into the host cell. Within the host cell the viral DNA is transcripted and thus messenger RNA is produced. Viral mRNA then is translated and viral proteins are made. Viral polypeptides made within the host cell are cut by enzymes called proteases and then copies of the virus are assembled with the newly formed proteins. When the assemblage of new viruses is completed the cell membrane breaks and the viruses are released to the outside. One sole infected cell can produce hundreds of viruses. Virus Review - Image Diversity: viral life cycle

Related questions

Description : Is the reproduction cycle for the Norwalk Virus lytic or lysogenic? -Biology

Last Answer : answer:

Description : Is the reproduction cycle for the Norwalk Virus lytic or lysogenic? -Biology

Last Answer : answer:

Description : What is the type of reproduction that occurs in roundworms? What typical feature do nematode sperm cells have?

Last Answer : Nematodes reproduce sexually. The nematode sperm cell does not have cilia nor flagella and they move by amoeboid movement forming pseudopods.

Description : What is the genetic material of a virus? How does that material act in viral reproduction?

Last Answer : There are DNA viruses (double strand or single strand DNA) and RNA viruses (double strand or single strand RNA too). Viruses inoculate their DNA or RNA molecules into cells and these cells (by means ... for the assembling of a new virus. This synthesis is commanded by the viral DNA or RNA molecules.

Description : Budding is most common asexual reproduction of — a. Bacteria b. Fungi c. Virus d. Yeast

Last Answer : d. Yeast

Description : $ Asexual reproduction is also called Apomixis. ! Apogamy shortens the life cycle of a plant.

Last Answer : $ Asexual reproduction is also called Apomixis. ! Apogamy shortens the life cycle of a plant. A. If both ... is wrong D. If both As and R are wrong.

Description : What is the importance of DNA copying in reproduction? -Biology

Last Answer : DNA copying has following importance in reproduction: It maintains the characteristics of species. It maintains the continuity of life. From this, the characteristics and features of organisms are ... progeny. It produces variations in organisms which is the basis of evolution of new species.

Description : What is the effect of DNA copying, which is not perfectly accurate, on the reproduction process? -Science

Last Answer : The DNA copying which is not perfectly accurate in the reproduction process results in variations in

Description : $ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential for the living organisms.

Last Answer : $ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential ... . If both As and R are wrong.

Description : A long thread-Like RNA virus is typical of the viruses. a. hepatitis C b. Ebola c. polio d. West Nile

Last Answer : b. Ebola

Description : What are the four phases in a typical business cycle?

Last Answer : Feel Free to Answer

Description : Aggressive pricing is typical during the ________ stage of the product life cycle. 1. decline 2. growth 3. introduction 4. plateau 5. stabilization

Last Answer : growth

Description : Aggressive pricing is typical during the __________ stage of the product life cycle. A)decline B)growth C)introduction D)plateau E)stabilisation

Last Answer : B)growth

Description : How much DNA is in a typical human cell? 

Last Answer : If the DNA (deoxyribonucleic acid) molecules in a single human cell were stretched out and laid end to end they would measure approximately 6.5 feet (2 meters). The average human body contains 10 to ... cells from one human were unraveled, it would stretch to the sun and back more than 500 times. 

Description : If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately (a) 2.0 meters (b) 2.5 meters (c) 2.2 meters (d) 2.7 meters.

Last Answer : (b) 2.5 meters

Description : If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately (a) 2.0 meters (b) 2.5 meters (c) 2.2 meters (d) 2.7 meters.

Last Answer : (c) 2.2 meters

Description : Which typical stage is known for DNA replication? (a) S-phase (b) G2-phase (c) metaphase (d) G1-phase

Last Answer : (a) S-phase

Description : The virus that causes chicken pox contains DNA. It reproduces inside the cells of living organisms. The virus is not made of cells and does not eat or breathe. Why isn’t the virus considered to be a living thing?

Last Answer : it is not made of cells (A+)

Description : The following statement(s) is/are true concerning newer detection methods of systemic infection. a. Enzyme-linked immunosorbent assay (ELISA) is a rapid immunologic assay used for ... detected using advanced molecular techniques include cytomegalovirus (CMV) and human immunodeficiency virus (HIV)

Last Answer : Answer: a, b, c, d Although the classic detection of infection based on clinical signs of infection and bacterial culture remain the most common clinical tools, increasing ... including CMV and HIV. Furthermore, preliminary investigations into possible detection of fungal pathogens are underway

Description : Which one of the following features is absent in a virus? (1) reproduce within host cell (2) presence of cell wall (3) fully parasitic in nature (4) presence of either DNA or

Last Answer : (2) presence of cell wall Explanation: A virus has a simple structure. It has no internal cellular structure, no cell wall or cell membrane, just the protein coat that holds the string of nucleic ... is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea.

Description : AIDS virus has – (1) single-stranded RNA (2) double-stranded RNA (3) single-stranded DNA (4) double-stranded DNA

Last Answer : (1) single-stranded RNA Explanation: AIDS viruses have single stranded RNA. It is composed of two copies of positive single-stranded RNA that codes for the virus's nine genes enclosed by a ... 2,000 copies of the viral protein. The single-stranded RNA is tightly bound to nucleocapsid proteins.

Description : AIDS virus is----------- A. Single-stranded RNA (Answer) B. Single-stranded DNA C. Double-stranded RNA D. Double-stranded DNA

Last Answer : A. Single-stranded RNA (Answer)

Description : Which one is a true statement regarding DNA polymerase used in PCR? (a) It is used to ligate introduced DNA in recipient cells. (b) It serves as a selectable marker. (c) It is isolated from a virus. (d) It remains active at high temperature.

Last Answer : (d) It remains active at high temperature.

Description : Human immuno deficiency virus (HIV) has a protein coat and a genetic material which is (a) double stranded RNA (b) double stranded DNA (c) single stranded DNA (d) single stranded RNA

Last Answer : (d) single stranded RNA.

Description : At which stage of HIV infection does one usually show symptoms of AIDS? (a) Within 15 days of sexual contact with an infected person (b) When the infected retro virus enters host cells (c) ... large number of helper T  - lymphocytes (d) When the viral DNA is produced by reverse transcriptase

Last Answer : (c) When HIV damages large number of helper T  - lymphocytes

Description : The unequivocal proof of DNA as the genetic material came from the studies on a (a) bacterium (b) fungus (c) viroid (d) bacterial virus.

Last Answer : (c) viroid

Description : Regarding interferon: a. it is a virus specific molecules b. it acts by neutralizing exotoxin c. it enhances the histocompatibility antigen on cell surface and thereby activate the T cells d. it exerts its effect by integrating itself with the DNA of virus infected cells

Last Answer : it enhances the histocompatibility antigen on cell surface and thereby activate the T cells

Description : The experimental proof for semi-conservative replication of DNA was first shown in a (a) fungus (b) bacterium (c) plant (d) virus

Last Answer : (b) bacterium

Description : Tobacco mosaic virus (TMV) genes are (a) single stranded RNA (b) double stranded DNA (c) proteinaceous (d) double stranded RNA.

Last Answer : (a) single stranded RNA

Description : What is the genetic material in influenza virus? (a) Double helical DNA (b) RNA (c) Single helix DNA (d) None of these

Last Answer : (b) RNA

Description : Cauliflower mosaic virus contains (a) ss RNA (b) ds RNA (c) ds DNA (d) ss DNA

Last Answer : (c) ds DNA

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus.

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus

Description : The genome of a virus may contain either ______ or ______. a. DNA; protein b. protein; carbohydrate c. carbohydrate; RNA d. RNA; DNA

Last Answer : d. RNA; DNA

Description : Cauliflower mosaic virus contain a. RNA b. RNA and DNA c. DNA d. None of these

Last Answer : c. DNA

Description : Transformation refers to a. Using A Virus To Transfer DNA Fragments. b. DNA Fragments Transferred Between Live Donor And Recipient Cells. c. The Formation of an F- Recombinant Cell. d. The Transfer of Naked Fragments of DNA

Last Answer : b. DNA Fragments Transferred Between Live Donor And Recipient Cells.

Description : Which of the following is a drug that interferes with the process of DNA production in the virus A- A.Erythromycin B- Vancomycin C- Amantadine D- Acyclovi

Last Answer : Acyclovi

Description : Diagnostic DNA probes have been developed for A- Mycobacterium tuberculosis B- Hepatitis B virus C- Human immunodeficiency virus D- all of the above

Last Answer : - all of the above

Description : The antiviral action of amantadine is exerted through: A. Interaction with the viral M2 protein B. Interaction with a virus directed thymidine kinase C. Inhibition of a viral protease enzyme D. Inhibition of viral RNA mediated DNA synthesi

Last Answer : A. Interaction with the viral M2 protein

Description : The experimental proof for semiconservative replication of DNA was first shown in a (1) Fungus (2) Bacterium (3) Plant (4) Virus

Last Answer : (2) Bacterium

Description : Which one is a true statement regarding DNA polymerase used in PCR ? (1) It remains active at hight temperature (2) It is used to ligate introduced DNA in recipient cells (3) It serves as a selectable marker (4) It is isolated from a virus

Last Answer : (2) It is used to ligate introduced DNA in recipient cells

Description : Which one of the following features is absent in a virus ? (1) reproduce within host cell (2) presence of cell wall (3) fully parasitic in nature (4) presence of either DNA or RNA

Last Answer : presence of cell wall 

Description : AIDS virus has : (1) single-stranded RNA (2) double-stranded RNA (3) single-stranded DNA (4) double-stranded DNA

Last Answer : single-stranded RNA

Description : At what stage of cell cycle DNA synthesis takes place? -Biology

Last Answer : answer:

Description : When in the cell cycle is dna doubled?

Last Answer : S Phase

Description : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during S phase.

Last Answer : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during ... , R is wrong D. If both As and R are wrong.

Description : The following graphs (A and B) depicts changes in DNA Content during cell cycle. Identify the cell divison from A and B :-

Last Answer : The following graphs (A and B) depicts changes in DNA Content during cell cycle. Identify the cell divison from ... D. `"A"to"Mitosis","B"to"Meiosis"`

Description : Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid cells are formed at the end of meiosis-I ( C

Last Answer : Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid ... and C C. Only B D. All are correct

Description : During which phase(s) of cell cycle amount of DNA in a cell remains at 4C level if the initial amount is denoted an 2C

Last Answer : During which phase(s) of cell cycle amount of DNA in a cell remains at 4C level if the initial amount is denoted ... Only `G_(2)` D. `G_(2)" and M`

Description : In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell?

Last Answer : In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell? A. ` ... C. `G_(2)`, S & M D. `G_(@)`