Virus vs. Bacteria! What's the difference?. By the end of today's class you will be able to... Compare and contrast microbes: · Size, shape, structure.

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Presentation transcript:

Virus vs. Bacteria! What's the difference?

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?!

Virus Vs. Bacteria!

NOTES!

Viruses and Bacteria BOTH are microbes that have DNA

Bacteria AND viruses BOTH can cause diseases!

Cellular or Noncellular? Bacteria: Single cell Virus: NOT a CELL! DIFFERENCES

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

Bacteria: cell wall, cytoplasm, DNA (NOT in a nucleus!) Virus: Protein shell surrounding DNA Structure? DIFFERENCES

Bacteria: Very small, but bigger than virus Virus: Very small, but smaller than bacteria Size? Bacteria! Viruses! DIFFERENCES

Bacteria: sphere, rod-shaped, spiral Virus: round, rod, bullet Shape? DIFFERENCES

Bacteria AND viruses can BOTH cause diseases!

Bacteria!Virus! -food poisoning -Lyme disease -strep throat -pneumonia -tuberculosis -typhoid fever -influenza (the flu) -chicken pox -malaria -HIV/ AIDS -measles -common cold Diseases

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

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!

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.

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!

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

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.

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.