Biochemistry

Proteolysis Definition Proteolysis is the hydrolysis of the peptide bonds that hold proteins together, resulting in the breakdown of proteins into their key components, peptides …

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Positive Feedback Definition Positive feedback is a process in which the end products of an action cause more of that action to occur in a …

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Porphyrin Definition A porphyrin is a large ring molecule consisting of 4 pyrroles, which are smaller rings made from 4 carbons and 1 nitrogen. These …

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Polysaccharide Definition A polysaccharide is a large molecule made of many smaller monosaccharides. Monosaccharides are simple sugars, like glucose. Special enzymes bind these small monomers …

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Polar Molecule Definition A polar molecule is a chemical species in which the distribution of electrons between the covalently bonded atoms is not even. Polarity …

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Plasmolysis Definition Plasmolysis is when plant cells lose water after being placed in a solution that has a higher concentration of solutes than the cell …

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Pinocytosis Definition Pinocytosis is the method by which a cell absorbs small particles outside the cell and brings them inside. The word pinocytosis comes from …

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Phototropism Definition Phototropism is the ability of a plant, or other photosynthesizing organisms, to grow directionally in response to a light source. Plants and other …

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Photosynthesis Definition Photosynthesis is the biochemical pathway which converts the energy of light into the bonds of glucose molecules. The process of photosynthesis occurs in …

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Phospholipid Definition A phospholipid is a type of lipid molecule that is the main component of the cell membrane. Lipids are molecules that include fats, …

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