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AQA B1 CORE 255 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|ALREADY GRADED A+
AQA B1 CORE 255 EXAM QUESTIONS 
AND CORRECT DETAILED ANSWERS 
WITH RATIONALES|ALREADY GRADED 
A+ 
 
 
Allele - ANSWER- A form of a particular gene; may affect the way in which that gene 
functions in the organism. 
Antibiotic - ANSWER- A chemical drug that can kill bacteria or stop them from growing 
but that is safe to use in people or animals. 
Antibiotic resistance - ANSWER- Genetic changes caused by rare mutation, that cause 
some bacteria to become unaffected by specific antibiotics. ...
- Exam (elaborations)
- • 17 pages •
AQA B1 CORE 255 EXAM QUESTIONS 
AND CORRECT DETAILED ANSWERS 
WITH RATIONALES|ALREADY GRADED 
A+ 
 
 
Allele - ANSWER- A form of a particular gene; may affect the way in which that gene 
functions in the organism. 
Antibiotic - ANSWER- A chemical drug that can kill bacteria or stop them from growing 
but that is safe to use in people or animals. 
Antibiotic resistance - ANSWER- Genetic changes caused by rare mutation, that cause 
some bacteria to become unaffected by specific antibiotics. ...