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How are nerve cells adapted to their function?

To answer this question we first need to understand what the function of a nerve cell, or neurone, is. Neurons need to be able to rapidly transmit electrical impulses along their length. They also need to ex...
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Answered by Christian H. • Biology tutor
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What is co-transport and why do I sometimes hear it being called active transport?

Example: absorption of sodium ions (Na+) and glucose by cells lining the ileum (a part of the small intestine) 1. Na+ actively transported into the blood from epithelial cells, by the sodium-potassium pump ....
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Answered by Olivia L. • Biology tutor
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What is the role of the rough endoplasmic reticulum and the Golgi apparatus in protein transport within cells?

Firstly, during protein synthesis, the DNA is transcribed into mRNA in the nucleus, which then can move out of the nucleus into the cytoplasm. This is where translation occurs, where the mRNA is read and tra...
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Answered by Mary-Jane G. • Biology tutor
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Describe the different phases involved in mitosis

In mitosis there are four phases: Prophase, Metaphase, Anaphase and Telophase. The first step is early Prophase, where chromosomes condense and become visible through supercoiling and simultaneously spindle ...
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Answered by Arabella H. • Biology tutor
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Use your knowledge of the carbon cycle to indicate the effect of deforestation on the carbon dioxide concentration in the atmosphere, and the effect this change will have on the environment.

Atmospheric CO2 is used by trees for photosynthesis. Deforestation means that there are less trees undergoing this photosynthesis reaction, so less CO2 is taken from the atmosphere. The trees that are cut do...
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Answered by Áine C. • Biology tutor
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