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Biology
IB

Outline the role of phagocytic white blood cells in defence against pathogens

Phagocytes are part of the innate immune system. They are primarily responsible for clearing extracellular infections e.g. bacteria or fungus, by recognising and ingesting the pathogen. Typically, pathoge...

Answered by Adeline R. Biology tutor
1521 Views

Explain the mechanism of synaptic transmission.

Synapses are the physical gaps that separate neurons from other cells. Neurons transmit information across synapses by converting the electrical signal into a chemical signal, usually neurotransmitters. T...

Answered by Lauren D. Biology tutor
3904 Views

How does the cell divide?

The cell divides through four stages:ProphaseMetaphaseAnaphaseTelophase and CytokinesisBefore prophase the DNA, genetic material of the cell, is coiled and not visible. All that is visible is a dark patch...

Answered by Klara H. Biology tutor
1287 Views

What should I do to get full marks in the essay section?

The essay section is split into 3 individual questions. These 3 questions will be worth 20 points altogether, out of which 2 points will be awarded for the quality of your writing, i.e. hand-writing, gram...

Answered by Ling Paulina G. Biology tutor
1227 Views

Describe the main stages of cell division

Interphage: G1 phase = Increased metabolic reactions, protein synthesis, organelle production, cell checks whether to divide or not S phase = DNA replication --> creation of sister chromatids G2 phase ...

Answered by Zoe G. Biology tutor
1590 Views

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