The evolution of pandas
By: Currie Jean
Giant pandas are peculiar animals. While they look like bears, they aren't quite bears; and while they're built like raccoons, they aren't quite raccoons, either. We know them by their cuddly depictions and black ears, eye patches, arms, legs and tails. Taxonomists know them for...
Interesting facts about barnacles (Crustacea: Cirripedia)
By: M E Skeel
Barnacles are so strange that they were misidentified as molluscs by taxonomists until 1830. After all, they had a shell and live a sessile life, so surely they were related to snails and clams? Their larvae finally gave them away. Barnacle larvae are free-living in...
The cell nucleus
By: Darian Peters
In eukaryotic cells, such as human cells, for example, the cell nucleus is the important organelle that houses the chromosomes. The chromosomes are the store of most of the genetic material of the cell (bar the mitochondrial DNA which is from a separate lineage). The...
Ribosomes: an explanation
By: Darian Peters
Ribosomes are a cellular component, that are not considered to be a true organelle because they lack a membrane, but are often referred to as a non-membranous organelle. They are found in the cytoplasm and are made of ribosomal RNA protein. Ribosomes, which are only...
Mitochondria defined
By: Darian Peters
Mitochondria are an organelle of many eukaryotic cells, such as human cells, for example. They can be thought of as the power plants of the cell because they produce most of the Adenosine TriPhosphate (ATP) used by the cell which is a key source of...
Biology: The Golgi apparatus
By: Darian Peters
The Golgi apparatus (also known as the dictyosome or Golgi body) is a cellular organelle that is to be found in many eukaryotic cells. Their main job is as a processing and packaging factory for the important macromolecules vital to cellular functioning like proteins and...
RNA defined
By: Darian Peters
RiboNucleic Acid (RNA) is the single stranded cousin of DeoxyriboNucleic Acid (DNA), the molecule of heredity which most people will be more familiar with. But RNA is also an important molecule in the normal functioning of a eukaryotic cell, like a human cell, and is...
A brief introduction to virology
By: Darian Peters
Virology is the study of viruses, those troublesome microorganisms that can cause us harm as the causative agents of diseases such influenza and Human Immunodeficiency Virus (HIV). But on the flipside they also have positive uses in medicine, being used in immunisation and also in...
What are sipunculids (peanut worms)? (Invertebrate phylum Sipuncula)
By: M E Skeel
You may think that if you have seen one worm, you have seen them all. In fact there are many different sorts of worms, some so completely unlike the others that they are placed in their own major groups. The invertebrate phylum Sipuncula is one...
What are echiurids (spoon worms)? (Invertebrate phylum Echiura)
By: M E Skeel
Polychaetes, platyhelminthes, velvet worms, earthworms, peanut worms, pogonophorans and priapulids... one could be forgiven for thinking that there were no more kinds of worms to discuss in the Zoology channel.... but wait! there's more! May I pull aside the curtains of ignorance and allow the...

 

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