Which of the following pathogens possesses a plasmid? a. prion b. virus c. all of these are correct d. bacterium Which of the following is NOT true of microorganisms? a) They produce antibiotics. b) They are used in the production of...
Which of the following statements about viruses Could be true? (Watch the wording carefully) A. Viruses are living because they can reproduce themselves. B. Viruses are not living because they don't evolve. C. Viruses are not living because they are ce ...
Eight virus families whose members infect vertebrates are currently known to possess single-stranded, positive-sense RNA genomes: the families Picornaviridae, Astroviridae, Caliciviridae and Hepeviridae have non-enveloped capsids, whereas the families Flaviviridae, Togaviridae, Arteriviridae and Coronaviridae...
Poxviruses represent the family of viruses that are physically the largest viruses and that possess the largest genomes. Much of the poxvirus genome encodes gene products that serve to evade host immune responses, and that are not required for virus replication in tissue culture. Further, facile ...
The prime directive of all organisms is to reproduce and survive and this also applies to viruses. Apparently, viruses are considered a nuisance to humans. Viruses – An Overview Virusespossess both living and non-living characteristics. The unique characteristic that differentiates viruses from other...
Viruses belonging to the other three families, the Arenaviridae, Bunyaviridae, and Orthomyxoviridae, possess segmented genomes with two, three, and six to eight segments, respectively. Regardless of whether the genome is one RNA molecule or is segmented, the genomes of all (−)RNA viruses ...
This process gives rise to new strains of influenza A. Newly emerged influenza viruses tend to be initially highly infectious and virulent in humans because they possess novel antigens to which the human body has no prepared immune defense (i.e., existing antibodies). Once a significant ...
I. Molluscs possess cellular level of organisation. II. Arthropods are true coelomates. III. Platyhelminthes are pseudocoelomates. IV. Ctenophores have bilateral symmetry. Choose the correct option. View Solution Which of the following statements are correct about penicillin?
In an alignment of sequences of human, avian, swine and bat IVs we found that almost all viruses do possess the serine resi dues 269 and 392 (Table S3), which were described as phosphorylation sites of RSK1, the downstream kinase of MEK/ERK [22]. This high level of conservation ...
Nevertheless, apparently viruses possess an inherent capacity that enables them to cross this invisible dividing line in order to link up with the ATP molecule through which they sustain their activities. The following presents a review of these issues with regard to microbiology, biochemistry and ...