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Symptoms of Salmonella include vomiting and diarrhoea, and it is known this is caused by a bacterium. What does the bacterium do to cause such symptoms?

Bacteria release toxins to poison and damage cells, leading to symptoms like vomiting and diarrhoea.
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Answered by Ishan J. • Biology tutor
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What are the characteristic properties of the genetic code?

Non-overlapping: The genetic code is read in triplets of bases, called codons, each of which codes for an amino acid. Degenerate: Each amino acid can be coded for by more than one base triplet. Non-ambiguous...
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Answered by Calum H. • Biology tutor
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Why will a plant wilt if it is not watered?

When a plant is watered, water moves into the plant by osmosis (the diffusion of water), this means that water moves into the cells causing them to become turgid. When the plant is not being watered, water m...
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Answered by Isabelle H. • Biology tutor
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Describe the steps involved in mitosis and name the exact stages (6)

Interphase: DNA and organelles replicate 2) Prophase: Chromosomes condense (and become visible! - made up of two sister chromatids joined by centromere), nuclear membrane breaks down, and centrioles move to ...
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Answered by Ritika G. • Biology tutor
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Explain the meaning of the terms (a) gene and (b) allele

Gene = the portion of DNA coding for a particular proteinAllele = one of the alternative forms of a gene
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Answered by Charlotte F. • Biology tutor
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