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Published byScott Cobb Modified over 8 years ago
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Virus vs. Bacteria! What's the difference?
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By the end of today's class you will be able to... Compare and contrast microbes: · Size, shape, structure ·Whether they are living cells What's a microbe?!
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Virus Vs. Bacteria!
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NOTES!
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Viruses and Bacteria BOTH are microbes that have DNA
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Bacteria AND viruses BOTH can cause diseases!
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Cellular or Noncellular? Bacteria: Single cell Virus: NOT a CELL! http://www.brainpop.com/health/diseasesinjuriesandconditions/viruses/ DIFFERENCES
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Bacteria: Living! Virus: NON-living! Living or Non-living? ·Viruses are not living cells…they can’t move, eat, or reproduce by themselves. ·BUT, if a virus can get inside a living cell, it can reproduce! ·SO viruses are always trying to invade living cells! ·Can reproduce at very high rates ·Are found everywhere! DIFFERENCES
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Bacteria: cell wall, cytoplasm, DNA (NOT in a nucleus!) Virus: Protein shell surrounding DNA Structure? DIFFERENCES
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Bacteria: Very small, but bigger than virus Virus: Very small, but smaller than bacteria Size? Bacteria! Viruses! DIFFERENCES
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Bacteria: sphere, rod-shaped, spiral Virus: round, rod, bullet Shape? DIFFERENCES
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Bacteria AND viruses can BOTH cause diseases!
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Bacteria!Virus! -food poisoning -Lyme disease -strep throat -pneumonia -tuberculosis -typhoid fever -influenza (the flu) -chicken pox -malaria -HIV/ AIDS -measles -common cold Diseases
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Bacteria!Virus! How do we treat the diseases? -Antibiotics -kills or slows the growth of the bacteria -Vaccines -we use vaccines to try to prevent us from getting the virus
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Using antimicrobial solutions ·Kills 99% of germs? · What about that 1% of germs that lives? ·They are immune to the solution ·They reproduce more microbes that are immune to the solution ·So what do you end up with? A huge population of harmful microbes that are not affected by the antimicrobial solution!
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Are bacteria good or bad? ·They can be both! ·Bacteria cause diseases such as tuberculosis, food poisoning, Lyme disease. ·Others eat harmful materials and release good vitamins and nutrients.
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Case Studies! -Look and each picture and read the case study -In your notebook, answer the questions for each case study. Label each: Ex. "Case study 1" -You will have two minutes at each station!
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Which statement below correctly identifies the reason why viruses are not considered alive? A They have DNA or RNA. B They have a protein coat. C They are really small. D They can only reproduce inside cells
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How do bacteria not help humans? A They cause diseases. B They make food products. C They help digest foods. D They eat harmful microbes.
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What do viruses and bacteria have in common? A They both cause disease. B They are both living. C They are both harmful to the environment. D They are both a cell.
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