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How does antibiotic resistance arise and how can resistance spread?

i. How does antibiotic resistance arise? antibiotic resistance = bacteria that cannot be treated with antibiotics resistance arises when bacterial genes mutate (=a change in base sequence of DNA) - leads to ...
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Answered by Keemia A. • Biology tutor
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What is phagocytosis and what steps are involved?

Phagocytosis is the name given to the process where phagocytes (a type of white blood cell found in blood ) will ingest invading pathogens or large particles and digest their contents. . 1. The pathogens wil...
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Answered by Sanjana A. • Biology tutor
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Why do nerve impulses travel faster in myelinated neurons?

The myelin sheath is a fatty layer made up of the hugely expanded plasma membrane of schwann cells which surround the axon of neurons. The axon is unprotected where the sheath of one cell meets the next and ...
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Answered by Dolcie P. • Biology tutor
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what steps occur in the process of phagocytosis?

Firstly, a foreign pathogen will enter the body and produce chemicals that attract the phagocytes. The phagocytes will recognise this non human protein and engulf and enclose them into a vesicle to form a ph...
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Answered by Holly M. • Biology tutor
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Describe the process of transcription in detail.

Firstly, an enzyme called DNA Helicase will unwind the double stranded DNA. The RNA nucleotides complimentary base pair with the DNA template strand. Phosphodiester bonds are formed between the RNA bases by ...
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Answered by Meera P. • Biology tutor
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