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30 Cards in this Set
- Front
- Back
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Which statement is NOT true about bacteria?
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BACTERIA DOES NOT REPRODUCE SEXUALLY. ASEXUAL REPRODUCERS OR DON’T REPRODUCE.
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The three shapes of bacteria are
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BACILLUS (ROD), SPIRILLUM, COCCUS
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The response of bacteria that allows them to be identified as Gram-positive or negative is due to
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THE THICKNESS OF THE CELL WALL
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Which type of organism will form endospores when faced with unfavorable environmental conditions?
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BACTERIA
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Which statement is true about bacteria?
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THEY CONTAIN SINGLE CIRCULAR DNA MOLECULES FOR THEIR GENETIC MATERIAL
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Bacterial cells pick up free pieces of DNA from the medium-pieces that were released from dead bacteria-in a process called
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TRANSFORMATION
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One bacterial cell passes DNA to a second cell in the process of
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CONJUGATION
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Which type of sexual exchange occurs among bacteria in which DNA is carried into a bacterial cell by means of a bacteriophage?
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TRANSDUCTION
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A new classification by domains separates traditional bacteria into
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ARCHAEA AND BACTERIA
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Which type of prokaryotes are able to live in the most extreme environments?
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ARCHAEA
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In which of the following environments are members of Archaea found?
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ALL TYPES INCLUDING EXTREME
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Which of the following is considered to be noncellular?
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VIRUSES
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Which of these is the most accurate description of a virus?
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CHEMICAL COMPLEX OF RNA AND DNA PROTECTED BY A PROTEIN
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The innermost core of a virus's structure is made up of
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RNA OR DNA
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Which of the following is NOT true about viruses?
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VIRUSES DO NOT HAVE ORGANELLES, THEY HAVE RNA OR DNA AND A PROTEIN COAT AND THAT’S IT
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The capsid of a virus is composed of
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PROTEIN
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Some, but not all, viruses contain ______, located on their outer surface
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MEMBRANE ENVELOPE
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In order to infect a cell, a virus must
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VIRUSES GET INTO HOST CELLS VIA A PROTEIN, CALLED A RECEPTOR. THE PROTEIN MUST BE LOCK AND KEY TO PROTEIN TO INFECTING
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Which stage of viral reproduction takes place when the spikes of the virus bind to a specific receptor molecule on the surface of a host cell?
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CALLED THE ATTACHMENT STAGE
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Viruses are
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SMALLER THAN BACTERIA
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If a virus is latent, it
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WILL INTEGRATE ITSELF INTO THE HOST GENOME
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The life cycle stage of an animal virus during which a capsid forms around copies of the viral RNA genome is
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THE ASSEMBLY STAGE
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Which of the following is NOT a characteristic of a virus?
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DISEASES CAUSED BY VIRUSES CANNOT BE TREATED WITH ANTIBIOTICS. ONLY BE PREVENTED WITH VACCINATION.
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Which statement is NOT true about a retrovirus?
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RETROVIRUSES DO NOT CONTAIN DNA, ONLY RNA
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When an enveloped animal virus enters a cell, then
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THE PROTEIN CAPSID IS REMOVED
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Naked strands of RNA not covered by a capsid are
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CALLED VIROIDS
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Some human diseases appear to be due to protein agents that may convert other proteins in the cell to also become these agents; this new disease protein agent is called a(n)
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PRION
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Bovine spongiform encephalopathy (BSE) or "mad cow disease" is caused by a(n)
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PRION
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A virus cycle that includes the
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REPLICATING AND BURSTING OF THE HOST CELL IS CALLED THE LYTIC CYCLE
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A virus cycle were the virus places its genetic material into the host DNA
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IS CALLED A LYSOGENIC CYCLE
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