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| Which of the following RNA viruses require enzymes in the nucleus for replication? |
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| A positive strain RNA virus synthesizes its own proteins after infection in which sequence? |
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| Which of the following is not one of the phases of bacterial growth? |
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| Reactivation of chickenpox long after the initial infection is |
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| In griffith’s experiments the transforming substance was |
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Definition
| a virus which can infect bacteria |
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| The kingdom monera is also known as the kingdom |
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| Acidophiles would be expected to grow best in a pH of |
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| Which is the strongest set of evidence showing horizontal gene transfer in eukaryotic cells? |
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Definition
| Mitochondria/ chloroplast |
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| Competence refers to a stage by which bacterium is able to |
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Definition
| take up naked DNA fragments |
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Term
| There is concern about the outbreaks of avian influenza in china because |
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Definition
| the abundance of duck and pig farms sharing the same area with humans in china may accelerate avian viruses to infect humans |
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Term
| Elongation of DNA requires the phosphate of a nucleotide attached to |
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Definition
| the 3’ position of another nucleotide |
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Term
| The type of cell reproduction in which a smaller new cell develops from the surface of an existing cell and then seperates from the parent cell is known as _____ and is the normal mode of replication in ______ |
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Definition
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Term
| Which of the following is a characteristic of all organisms but not viruses? |
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Definition
| Presence of plasma membrane |
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Term
| As discussed the promoter region of a gene and the initiation site for chromosome replication are of the high in _____ nucleotide counts |
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Definition
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Definition
| has no membranous envelope |
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| During replication DNA is synthesized by |
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| When genes are passed on from parent to offspring it is called |
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Term
| Viruses are referred to as obligate parasites because |
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Definition
| they cannot exist without a suitable host |
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Term
| In most human gene therapy studies a “normal” gene of a cell is inserted into the geneome of a target cell to replace an abnormal disease causing gene. This process is carried out by |
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Definition
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| A permanent alteration in the DNA of an organism is called |
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Definition
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Definition
| do not immediately increase in number when placed in a culture |
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Term
| Organisms in the same ____ are more closely related than are organisms in the same ____ |
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Definition
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| Bacterial growth in colonies on agar plates |
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Definition
| have all phases of growth occurring simultaneously somewhere in the colony |
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Term
| A viral cycle which ends with the rupture of the cell and release of new viral particles is the |
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Definition
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| The viral envelope most likely arises from which following source |
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Definition
| host cell plasma membrane |
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Definition
| are synthesized by genes that are sometimes active and sometimes inactive |
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| A species is a subgroup of |
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Definition
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Definition
| are found in bacteria only |
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Term
| High frequency recombination cells arise when |
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Definition
| a portion of the cell's F plasmid has been incorporated inot the bacterial chromosome. |
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Term
| A strain is a subgroup of |
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Definition
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Term
| Which type of cell will generally shift to metabolism when oxygen is available but will carry on fermentation otherwise? |
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Definition
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| A variant of the DNA sequence found at the same locus are called |
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| The two kingdom sequence of classification divided all organisms into either |
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Definition
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| Which of the following levels of classification would contain the greatest number of organisms? |
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| A nomenspecies is a group of |
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Definition
| organisms bearing the same binominal name |
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| Virus that infenct bacteria is called |
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Definition
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| The mRNA carries instructions to the ribosomes |
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Definition
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| Ames test is for the detection of |
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Definition
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| The life cycle of a virus is |
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Definition
| adsorption->penetration->synthesis->maturation->release |
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Term
| Reverse transcription occurs when |
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Definition
| RNA is used as a template to produce DNA |
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Term
| Why is it very difficult to define a species in bacteria? |
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| As discussed table 9-3 in the textbook mistaken an ester bone in |
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| Eschera coli serovar is often distinguished by |
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Definition
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| The amino acid phenylalanine has only two synonomous codons (UUU &UUC) is a form of |
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Definition
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| Bacterial conjugation is an example of |
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Definition
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Definition
| related to anticodons on tRNA |
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| Evolution is the result of |
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Definition
| random mutations and natural selection |
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