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Explain pieces of evidence that support the theory that mitochondria evolved from bacteria?

Mitochondria are one of the three eukaryotic organelles that have a double membrane (along with chloroplasts and the nucleus), two of which are believed to have evolved from bacteria (mitochondria from Prote...
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Answered by Angus L. • Biology tutor
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What factors affect the rate of conduction of an action potential (AP) down a neurone?

MYELINATION A lipid myelin sheath is wrapped around the axon of the neurone in SEGMENTS. Only the parts of the axon exposed contain Na/K channels that will participate in the conduction of the AP. These segm...
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Answered by Fahad A. • Biology tutor
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Outline what happens to chromosomes during the mitotic cell cycle.

In the mitotic cell cycle, during the synthesis stage of interphase the DNA is replicated in each chromosome histone protein. In the first stage of mitosis, prophase, the chromosomes become visible due to sh...
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Answered by Ines D. • Biology tutor
22007 Views

How can urine be used to detect pregnancy?

The hormone Human Chorionic Gonadotrophin (HCG) starts to be secreted six days after conception from a developing embryo. A pregnancy test stick has three bands. In the first are monoclonal antibodies which ...
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Answered by Aimee W. • Biology tutor
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What is the differences between mitosis and meiosis?

Mitosis and meiosis are both processes which describe the production of new cells. Mitosis produces 2 daughter cells which are genetically identical to the parent cell. Each daughter cell is diploid (contain...
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Answered by Jennifer T. • Biology tutor
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