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Explain how the nerve impulse passes along the neuron

Resting membrane potential of a neuron is maintained by active transport of sodium (Na+) out of the cell and potassium (K+) into the cell through the Na+/K+ pump. Due to the negative charge of Cl- and some a...
EK
Answered by Elena K. • Biology tutor
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Describe how the fluidity of the membrane and how this allows transport across it.

The fluidity of membranes allows it to invaginate and form vesicles. This is important for the process of endocytosis by which the cell is able to uptake materials from the extracellular environment. Vesicle...
NH
Answered by Naomi H. • Biology tutor
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Describe the process of meiosis

The first stage of meiosis is Prophase 1, where the homologous chromosomes pair up and spindle microtubules grow from each pole to the equator around the nucleus. The next stage is Metaphase 1, the nucleus m...
CS
Answered by Conner S. • Biology tutor
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What are the similarities and differences between mitosis and meiosis?

Mitosis is the process by which a cell divides to give rise to two identical diploid daughter cells and is how all somatic cells are produced. Meiosis is the process by which a cell gives rise to four geneti...
NS
Answered by Natasha S. • Biology tutor
21723 Views

What is a Single Nucleotide Polymorphism?

If two sequences of DNA from the same position along a DNA strand (locus) have a single change between them we call them single nucleotide (one base unit of DNA, A/T/C/G) polymorphism (poly- "many-&quot...
TK
Answered by Thomas K. • Biology tutor
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