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26 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is a tiny, nonliving particle?
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VIRUSES
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v
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How big are viruses in comparison to bacteria?
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one-half to one-hundredth of the size of the smallest bacterium
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small
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Why don't most biologists consider them to be alive?
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they don't fulfill all the criteria for life
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asf
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Viruses don't carry out..., or..., or
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respiration, grow, or move
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asf
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All viruses can do is...
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reproducea
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sd
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Viruses reproduce only inside a BLANK cell. This cell is called a BLANK cell
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LIVING HOST
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alskjf
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because they are nonliving, viruses are NOT given
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LATIN NAMES
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ASJD
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viruses are often names for the diseases they...
example:rabies, polio |
CAUSE
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gau
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What is a virus that infects bacteria?
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BACTERIOPHAGE
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GHAY
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a virus consists of an inner core of BLANK surrounded by one or two BLANK coats, called a BLANK
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nucleis acid, protein, capsid
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some viruses may have another layer called the BLANK it consists of BLANK
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VIRAL ENVELOPE
PROTEINS |
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the arrangement of the proteins in the viral coat gives different BLANK
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shapes
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most viruses can enter and reproduce in only a few kinds of BLANK
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CELLS
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once attached to the plasma membrane of the host cell, the virus must BLANK and BLANK only then can the virus BLANK
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GET INSIDE
TAKE OVER THE CELL'S METABOLISM REPRODUCE |
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some viruses are shaped so that they can inject their BLANK into the BLANK
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NUCLEIC ACID
HOST CELL |
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other viruses can barge in by indenting the BLANK which seals off and breaks free BLANKING the virus with a BLANK in the cell's cytoplasm. virus will burst
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PLASMA MEMBRANE
ENCLOSING VACUOLE |
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once inside the cell, the virus destroys the BLANK
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host dna
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it BLANKS the cell's metabolic activities to copy the viral genes
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REPROGRAMS
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nat all viruses are BLANK to their hosts
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fatal
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some viruses attack but do not BLANK the cells. these viruses go through a BLANK cycle
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kill
lysogenic |
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the lysogenic cycle can continue BLANK for many years. but at any time the virus can enter the BLANK cycle, start BLANKING and BLANK the host cell
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UNDETECTED
LYTIC REPRODUCING KILL |
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an ATTACK of chicken pox gives BLANK from another attack
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protection
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viral dna that is intergrated into the host cell's chromosome is called a
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PROVIRUS
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however, the virus remains BLANK within nerve tissues. it may BLANK
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DORMANT
FLARE UP |
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more than BLANK viruses are known to infect plants causing BLANK
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400
plant diseases |
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first virus to be indentified was a plant virus called...
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TOBACCO MOSAIC VIRUS
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