Inorganic Ions Flashcards
(15 cards)
What are inorganic ions?
Inorganic ions are electrically charged atoms or molecules, excluding those containing carbon, that play crucial roles in various biological processes.
Why are inorganic ions important in biology?
They are involved in maintaining fluid balance, transmitting nerve impulses, and contracting muscles
What is the role of hydrogen ions (H+)?
They determine the pH of a solution, influencing enzyme activity.
What happens to pH as hydrogen ion concentration increases?
The pH decreases, making the solution more acidic
What is the role of iron ions (Fe2+/Fe3+)?
They are part of the haem group in haemoglobin, which transports oxygen in red blood cells.
What role do sodium ions (Na+) play?
Vital for co-transport, nerve impulse transmission, and fluid regulation
What is the role of phosphate ions?
They are components of cell membranes, DNA, RNA, and proteins.
What role do calcium ions (Ca2+) play?
They are involved in muscle contraction and nerve impulse transmission.
How does water affect the properties of inorganic ions?
Water is a polar solvent, meaning it can dissolve many inorganic ions due to their charges interacting with the partial charges of water molecules.
How do inorganic ions move across cell membranes?
They can move through protein channels or by co-transport
What is the term for a positively charged ion? (Hint: they’re PAWsitive)
Cation
What is the term for a negatively charged ion? (Hint: they’re “anoyin”)
Anion
What is the significance of the pH of body fluids?
Body fluids are typically maintained at a pH of around 7.4, which is important for enzyme function
What is the role of potassium ions (K+)?
They are involved in nerve impulse transmission
How do inorganic ions contribute to muscle contraction?
Calcium ions are essential for muscle contraction, while sodium and potassium ions play a role in regulating the resting potential of muscle cells.
