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Biology
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Explain How Macrophage becomes an Antigen presenting cell

Phagocytosis occurs:The Macrophage surrounds and envelops the pathogen with pseudopodia The pseudopodia envelops the bacteria completely forming a vesicle, called a phagosomephagosome is fused with a lyso...

IC
Answered by Ibtihaj C. Biology tutor
2932 Views

Name and describe the 4 stages within mitosis? [12 marks]

Prophase [1 mark] nuclear membrane breaks down [1 mark] chromosomes condense [1 mark] Metaphase [ 1 mark] chromosomes are lined up [ 1 mark] along the cell's equator [1 mark]Anaphase [1 mark] one set of c...

IR
Answered by Ismay R. Biology tutor
2739 Views

What is protein Structure

Protiens are polymer of amino acidsAmino acids are joined by peptide bondsPeptide bonds are formed by condensation4 different structures Primary structure is sequence of amino acids held together by pepti...

VW
Answered by Victoria W. Biology tutor
2850 Views

Describe the mutations which occur in chromosomes

There are four ways that a chromosome can mutate; deletion, duplication, inversion and translocation. Each of these mutations will result in a change in eit...

MN
Answered by Molly N. Biology tutor
1227 Views

How are nutrients absorbed into the circulatory system in the small intestine?

Firstly I would ensure the student understands the basic concepts of diffusion and what nutrients are. I would describe how food substances move through the digestive system and break down into amino acid...

PC
Answered by Pippa C. Biology tutor
3017 Views

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