1. Viruses are NOT a composed of a genome+ a protein capsid b. cellular c. infec
ID: 3166227 • Letter: 1
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1. Viruses are NOT a composed of a genome+ a protein capsid b. cellular c. infecting agents d. disease causing e. everywhere 2. Viruses can only replicate a. everywhere b. after 5 pm e. when they have infected a host cell. d. using DNA e. using proteins to direct infections. 3. Virural genomes a are only DNA b. are only RNA c. are both DNA and RNA d. are either DNA Or RNA e. are proteins 4. Phages are viruses that a. infect bacteria b. infect plant cells c. infect animal cells d. infect other viruses e. all of the above. 5. In a lytic life cycle, a. the virus genome integrates into the host cel DNA b. the virus proceeds through the life cycle without replication.Explanation / Answer
3) Viral Genomes consists of either DNA or RNA but not both DNA & RNA. In most of the cases viruses consists of RNA and this can be seen especially in plant viruses because plant viruses tends to have single stranded RNA Genome and bacteriophages have double stranded DNA Genome. So i think option D is correct.
4) Phages are formally known as bacteriophages and these phages are the viruses that infect bacteria and also Archaea.As far as the question is concerned,phages are the viruses that effects bacteria.So i think option A is correct.
9) Prions are the plant pathogens that donot contain any kind of nucleic acids and also viroids and these pathogens donot encode proteins. So Prions are plant pathogens and i think option E is correct.
10) The main purpose of the vaccine is to produce immunity. Immunity is very important for our body and the loss of immunity leads to dangerous factors. The immune cells attack on bacteria and viruses and stops them in increasing their count in the body. So the purpose of vaccine is to prime our immune systems. So i think option A is correct.
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