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Prokaryotic cells (bacteria) are exclusively unicellular whereas eukaryotic cells can display attributes of both multicellular and unicellular of a bigger and more complex structure. Eukaryotes are disti...
Auxin is a plant hormone that is often made in the growing tips of roots and stems, the hormone can then diffuse to other parts of the plant. It controls the growth of plants by promoting cell division an...
Not all energy is transferred between different levels of the food chain due to not all the organisms being consumed, often not the entire organism is eaten either, leaving behind energy in the hair/fur, ...
A diseased coronary heart artery has fatty diposits (atheroma) that narrow the lumen, and block bloodflow. As the coronary arteries primarily serve to nourish the heart, this can weaken it and if it remai...
Transcription is the process where a segment of DNA is copied into a segment of mRNA. This takes place in the nucleus. First the segment of DNA needs to be unzipped, so an enzyme breaks the hydrogen bonds...
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