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What is the difference between a Eukaryotic and Prokaryotic cell?

Eukaryotic cells: bigger overall, chromosomes are linear and can be coiled round proteins for folding, larger ribosomes, they contain membrane bound organelles such as the nucleus, mitochondria, chlorolplast...
GI
Answered by George I. • Biology tutor
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Describe the five stages of phagocytosis of a bacterium by a neutrophil

Attraction of phagocyte (neutrophil), towards the bacterium 2) Neutrophil engulfs the pathogen, forming a phagosome3) Formation of lysosomes which are attracted to the phagosome4) Binding of lysosomes to the...
MB
Answered by Mahesh B. • Biology tutor
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Describe how HIV replicates in the human body

The HIV life style has 7 stages. The first is binding: HIV has glycoproteins embedded in the membrane that help it to bind to CD4 receptors on the surface of a human cell. Next, the HIV envelope and human ce...
MM
Answered by Maree M. • Biology tutor
9107 Views

Describe how muscle cells contract

An action potential depolarises the sarcoma and depolarisation travels down the T-tubules to the sarcoplasmic reticulum, which releases Ca 2+ (calcium ions) to the sarcoplasm. Ca 2+ cause tropomyosin to chan...
MS
Answered by Maria S. • Biology tutor
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Describe the process of ultrafiltration in the Kidneys.

Ultrafiltration occurs in the nephron, the functional unit of the kidney. Blood enters a coiled network of vessels called the glomerulus from the afferent arteriole at a high hydrostatic pressure. The glomer...
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Answered by Matthew M. • Biology tutor
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