What are two things that are true about all known viruses? Hint: one relates to the virus itself, the other relates to the ability of the virus to reproduce (replicate).
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Q: replicate,
A: The substance which controls the inheritance of characters or traits from one generation to the…
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Q: Why are viruses not classified as living?
A: Virus are small infectious agents that reproduce in living cells and cause various diseases.
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A:
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Q: Are viruses alive? 3 key point?
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Q: Why are viruses not considered to be alive?
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A: The size genome of eukaryotic pathogens ranges from 10 Mb to > 100000 Mb. The size genome of…
What are two things that are true about all known viruses? Hint: one relates to the virus itself, the other relates to the ability of the virus to reproduce (replicate).
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- 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, 5How is the entry (penetration) of an animal virus into its host cell similar or different to the entry of a bacteriophage into its host cell? The entire viral particle (capsid and genome) can penetrate an animal cell, while only the viral genome can penetrate a bacterial cell. There is no difference; the entire viral particle (capsid and genome) penetrates both cell types. There is no difference; only the viral genome penetrates both cell types. The viral genome can penetrate an animal cell, while the entire viral particle (capsid and genome) penetrates a bacterial cell.Select all the following statements that are TRUE regarding viruses: □ All viruses are potentially dangerous to humans because any virus can infect any host. □ Viruses are fastidious pathogens that require complex growth media. □ Viruses are noncellular particles that take over the metabolism of a cell to generate more virus particles. □ Viruses are genomes made of RNA and DNA that lack many protein. □ Viruses can infect all other known life forms on earth, from Archaea to humans.
- Which of the following statements accurately distinguishes between viruses, prokaryotic cells, and eukaryotic cells? Viruses are not cellular and require a host to replicate, prokaryotic cells lack a nucleus, and eukaryotic cells contain a nucleus and other membrane-bound organelles Viruses, prokaryotic cells, and eukaryotic cells all contain a nucleus Viruses and prokaryotic cells are always unicellular, while eukaryotic cells are always multicellular Viruses do not contain organelles, while prokaryotic and eukaryotic cells doYou are a virologist studying a newly isolated viral strain and have sequenced its genome. You find that the genome contains 25% A, 55% G, 20% C, and 10% U. Which of the following conclusions is likely correct? This is a single-stranded RNA virus This is a single-stranded DNA virus This is a double-stranded RNA virus This is a double-stranded DNA virus No conclusions can be drawn from this informationAs a general rule, viruses are not considered to be alive based on several reasons. One such reason is that some viruses use RNA as their genetic material instead of DNA. Which of the five biological themes does this violate? Briefly explain why.
- Which of the following self-replicating biological agents carries only one polynucleotide chain as its genetic material, does not code for any proteins, and does not have any nucleocapsid? the RNA virusoid known as hepatitis delta virusoid the single-stranded RNA virus known as human immunodeficiency virus the double-stranded RNA virus known as rotavirus the double-stranded DNA virus known as pandoravirus the RNA viroid known as citrus exocortis viroid The human precancerous disorder known as xeroderma pigmentosum is caused by which of the following mutagenic conditions? thymine dimers demethylation deacetylation depurination deamination 7. Who discovered that DNA synthesis in the intact chromosomes of rapidly-growing bacterial cells is continuous on the leading strand, but discontinuous on the lagging strand? Rosalind Franklin and Maurice Wilkins Matthew Meselson and Franklin Stahl Erwin Chargaff and Arthur Kornberg Reiji Okazaki and Tuneko Okazaki James Watson and…Viruses are made up of the same biomolecules as cellular organisms (DNA, RNA, proteins, lipids, etc.), which are synthesized through enzymatic dehydration reactions from building blocks and disassembled by enzymatic hydrolysis. They infect cells and replicate themselves using resources from the host cells. Scientists discovered a previously unknown strain of virus in the tropical Pacific Ocean and it can infect higher-order eukaryotes. Initial analysis revealed that the virus is mainly composed of nucleic acids, proteins, and lipids. Chemical analysis after complete hydrolysis revealed the following building blocks (by weight): Chemical components Nucleosides Amino acids Lipids, phosphates, and carbohydrates Percentage by weight 20 30 50 Analysis of percentages of nucleosides yielded the following results (by molar ratio): Nucleosides A G T C U Percentage by mole 19 29 19 29 4 Which of the following events mostly involves hydrolysis reaction after the virus infects…Which of the following self-replicating biological agents carries only one polynucleotide chain as its genetic material, codes for only a single protein, and uses that protein in its nucleocapsid? the RNA virusoid known as hepatitis delta virusoid the single-stranded RNA virus known as human immunodeficiency virus the double-stranded RNA virus known as rotavirus the double-stranded DNA virus known as pandoravirus the RNA viroid known as citrus exocortis viroid
- Because viruses lack some of the traits seen in all living things, many scientists do not believe viruses to be genuinely "alive." Using a few characteristics of live organisms as examples, explain why viruses may not be truly "alive."Describe the lysogenic cycle of a virus. What is the difference between the lytic and lysogenic cycle of a virus? What are vaccines? Define the words “Emerging Virus” and “Pandemic”. Give examples of human diseases caused by viruses. What is a prion and viron? Are prion and virons viruses? Give examples of human or animal diseases caused by prions and what organisms are affected. Book: Biology (Campbell) 11 edition Urry. Cain. Wasserman. Minorsky. ReeceIs a Virus considered living or non-living (Justify the answer)? Give one example of a virus.