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Explain the process of phagocytosis? i.e what type of immune responses can it play a role in/link, what cells are involved, how does it work?

Can be used in adaptive or innate immune response.Can be used to link the two responses, i.e. forming APC which forms MHC complex 2 (endogenous pathway) and presents to complementary CD4+T helper cells. Lead...
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Answered by Benjamin S. • Biology tutor
2540 Views

Describe the meaning of the terms: gene, genetic locus, alleles, phenotype and genotype

A gene is a length of DNA that codes for a particular trait. ( Think of- jeans - they are long items (length) of clothing, what they're made out of determines what they are. This is a key concept of genetics...
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Answered by Eoin M. • Biology tutor
3918 Views

Describe the process of phagocytosis

So Bacteria and other pathogens are too large to enter a cell via diffusion across the cells membrane so instead white blood cells will engulf them. This is essentially what phagocytosis is and cells that do...
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Answered by Safiyya A. • Biology tutor
4841 Views

How do skeletal muscles contract ?

A motor neuron stimulates the sarcoplasmic reticulum, causing it to release Calcium ions. The calcium ions binds to the toponin that is blocking the myosin binding site on the acting filament, the binding of...
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Answered by Akshita N. • Biology tutor
1958 Views

What are dominant and recessive alleles?

Alleles are different versions of the same gene, which give different characteristics (or phenotypes ) when expressed. Each gene has a pair of two alleles, and these pairs can be homozygous , meaning both al...
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Answered by Chloe B. • Biology tutor
4596 Views