Inorganic ions (3.1.8)
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An ion is an atom or group of atoms with an electrical charge. Ions with a positive charge are cations, while those with a negative charge are anions.
Inorganic ions are crucial in various cellular processes, existing in the cytoplasm and body fluids of organisms. Their concentrations can vary and each type of inorganic ion has a specific role based on its properties.
Hydrogen ions determine the of a solution. The concentration of is inversely related to ; more ions correspond to lower .
is crucial for enzyme activity, as changes can alter enzyme structure, particularly the shape of its active site.
Iron ions () are essential for oxygen transport in haemoglobin and myoglobin. in haemoglobin binds oxygen, allowing red blood cells to carry it throughout the body.
Iron ions are also essential in electron transport during respiration and photosynthesis.
Phosphate ions () form phosphate groups, essential components of DNA, RNA, ATP, and phospholipids.
In ATP, the phosphate bonds store energy, which is released during cellular processes. Phosphate ions are essential for energy transfer through ATP and play a critical role in signal transduction pathways, regulating various cellular processes.
Hydroxide ion () are important in the process of maintaining by neutralising excess ().