1. Inorganic Ions Flashcards
What does the ion do?
CO3 2-
- Carbonate
- Shells of sea creatures
- Lots of Carbon dioxide is transported as this
What does the ion do?
Ca 2+
- Calcium
- Component of teeth and bones
- Important in muscle contraction
What does the ion do?
Fe 2+
- Iron
- Component of Haemoglobin
What does the ion do?
NO3 -
- Nitrate ions
- Used in protein synthesis
What does the ion do?
PO4 3-
- Phosphate ion
- Component of ATP and bones
What does the ion do?
Mg 2+
- Magnesium ion
- Component of chlorophyll
What does the ion do?
Cl -
- Chlorine ion
- In humans, an inability to transport this ion leads to cystic fibrosis
What does the ion do?
Na +
- Sodium ion
- Osmotic impulses
- Nerve impulses
What does the ion do?
K +
Potassium ion
- Osmotic balance particularly in the kidneys
What are ions
- An atom or group of atoms with an electric charge
- Cations= positive charge
- Anion= negative charge
- Metal atoms form cations
What is an inorganic ion
An ion that doesn’t contain carbon
What do more hydrogen ions mean?
The more hydrogen ions present, the lower the pH = more acidic
Formula for pH
pH = -log[H+]
Effect of big/small change to pH on enzyme
These are the ionic and hydrogen bonds. Extreme pHs can therefore cause these bonds to break. When the bonds holding the complementary active site of an enzyme break, it cannot bind to its substrate. The enzyme is thus denatured, as no enzyme-substrate or enzyme-product complexes can form.
Oxygen Binding and Unloading
The Fe 2+ ion in Haemoglobin binds with oxygen. It temporarily becomes Fe 3+ until the oxygen is released
