3. Which of the following characteristics are shared by toxins that are produced

Question

3. Which of the following characteristics are shared by toxins that are produced by E. coli O157:H7, Clostridium botulinum, and Staphylococcus aureus? a. They are all heat stable b. They are all multi-subunit toxins made from distinct proteins c. They all target kidney cells d. They each are carried by bacteriophage e. They all form heat-stable spores 3. Which of the following characteristics are shared by toxins that are produced by E. coli O157:H7, Clostridium botulinum, and Staphylococcus aureus? a. They are all heat stable b. They are all multi-subunit toxins made from distinct proteins c. They all target kidney cells d. They each are carried by bacteriophage e. They all form heat-stable spores 3. Which of the following characteristics are shared by toxins that are produced by E. coli O157:H7, Clostridium botulinum, and Staphylococcus aureus? a. They are all heat stable b. They are all multi-subunit toxins made from distinct proteins c. They all target kidney cells d. They each are carried by bacteriophage e. They all form heat-stable spores

Explanation / Answer

The answer is (b)

They all are formed from multi subunit toxins and are made of different proteins.They all formed AB group of toxins.AB group are double toxins.

option a cannot be the answer because they are not heat resistant .E.coli can be stable upto some temperature . but cannot be stable at very high temperature.

option c cannot be the answer because clostridium botulinum toxin does not affect kidney.

option d cannot be the answer because they all are not carried by bacteriophages

option e cannot be the answer because they all cannot form heat stable pores.

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