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The sun provides the initial energetic input for most terrestrial and aquatic ecosystems. Producers (commonly green plants) transform sunlight into food via photosynthesis where light energy is converted to ...

All cells undergo cell division in order to replicate themselves, and this process is called the cell cycle. At the end of the cell cyclle, 2 identical daughter cells are formed. Before the major part of the...

Unlike animal and plant cells, bacteria cells lack membrane bound organelles including: mitochondria, chloroplasts and a 'true nucleus'. Instead Bacterial DNA forms a single strand within the cytoplasm. Bact...

The chemical change which happens in the leaves of green plants. It is the first step towards making food - not just for plants but ultimately every animal on the planet. During photosynthesis: Light energy ...

Enzymes act as biological catalysts for reaction that occur in organisms such as animals and plants. This means that they help to speed up reactions, or allow them to take place at lower activation energy le...