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When a cell prepares to divide, the two strands of the double helix separate, serving as a template, for the creation of a new strand. The new strands are formed by adding nucleotides, resulting in the f...

The role of the sperm cell is to fertilise the egg. It is adapted to fulfill this role in four main ways. Firstly it has a tail to help it travel to the egg. Secondly it contains the nucleus in the head t...

Eukaryotic cells include plant and animal cells. They have a cell membrane, cytoplasm and their genetic DNA is encased in a nucleus. Prokaryotic cells (bacteria) are much smaller in comparison. They have ...

Bacteria are used in industry to produce enzymes and other proteins. Because they are prokaryotes and don't have a nucleus, every DNA plasmid that is taken up is translated. You just have to insert the pl...

The cell is the smallest unit of life. Organelles cannot survive by themselves.Challenge to the theory: green algae - highly complex mono-nucleated cell that is up to 10cm. All cells come from pre-existin...