Which is a description of an antibiotic?
A A chemical group on the surface of a pathogen - OCR Gateway - GCSE Biology - Question 11 - 2022 - Paper 1
Question 11
Which is a description of an antibiotic?
A A chemical group on the surface of a pathogen.
B A chemical that kills bacteria or stops them dividing.
C A drug that i... show full transcript
Worked Solution & Example Answer:Which is a description of an antibiotic?
A A chemical group on the surface of a pathogen - OCR Gateway - GCSE Biology - Question 11 - 2022 - Paper 1
Step 1
A chemical group on the surface of a pathogen.
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Answer
This option describes surface structures such as antigens or receptors, not an antibiotic.
Step 2
A chemical that kills bacteria or stops them dividing.
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Answer
This is the correct definition of an antibiotic, which is specifically aimed at targeting bacterial infections.
Step 3
A drug that is used to kill viruses.
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Answer
This option refers to antiviral medications, which are different from antibiotics that target bacteria.
Step 4
A protein molecule made by white blood cells.
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Answer
This describes antibodies, which are part of the immune response, not antibiotics.
