Bacteria

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16. Which of the following bacteria is responsible for causing food poisoning?

a) Escherichia coli

b) Streptococcus pneumoniae

c) Staphylococcus aureus

d) Shigella dysenteriae

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17. The process of bacteria taking up free DNA from their environment is called:

a) conjugation

b) transformation

c) transduction

d) binary fission

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18. Which of the following is an example of gram-negative bacteria?

a) Staphylococcus aureus

b) Escherichia coli

c) Streptococcus pneumoniae

d) Bacillus subtilis

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19. Bacteria that require salt for growth are known as:

a) methanogens

b) halophiles

c) thermophiles

d) psychrophiles

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20. Bacterial toxins are responsible for causing symptoms in various diseases. Which of the following diseases is caused by a bacterial toxin?

a) tetanus

b) tuberculosis

c) pneumonia

d) Lyme disease

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