Normal microflora are considered to be pathogenic when they
(A) increase in size - HSC - SSCE Biology - Question 2 - 2016 - Paper 1
Question 2
Normal microflora are considered to be pathogenic when they
(A) increase in size.
(B) are resistant to antibiotics.
(C) cause symptoms in a person.
(D) are trans... show full transcript
Worked Solution & Example Answer:Normal microflora are considered to be pathogenic when they
(A) increase in size - HSC - SSCE Biology - Question 2 - 2016 - Paper 1
Step 1
Identify the signs of pathogenicity
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Answer
Pathogenicity refers to the ability of a microorganism to cause disease. Normal microflora can become pathogenic under certain conditions.
Step 2
(A) increase in size.
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Answer
An increase in size alone does not determine pathogenicity. Many non-pathogenic bacteria can grow without causing disease.
Step 3
(B) are resistant to antibiotics.
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Answer
Resistance to antibiotics can be a factor in pathogenicity, but it is not sufficient alone to classify a microflora as pathogenic.
Step 4
(C) cause symptoms in a person.
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Normal microflora are considered pathogenic when they cause symptoms in a person, indicating an active infection or disease process.
Step 5
(D) are transferred to another person.
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Answer
Transfer to another person does not inherently determine pathogenicity. Many non-pathogenic bacteria can be transmitted without causing disease.
