Inorganic ions Flashcards

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1
Q

Where do inorganic ions occur?

A

In the cytoplasm and body fluids of organisms, some in high concentration and some in low concentration

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2
Q

What role do H+ ions have?

A

Concentration of H+ ions determines pH, and therefore enzyme function

  • high concentration of H+ ions = lower pH (more acidic solution)
  • low concentration of H+ ions = higher pH (more alkaline solution)
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3
Q

What role do Fe2+ ions have?

A

Binds to oxygen in haemoglobin to transport oxygen around the body

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4
Q

What Na+ ions have?

A

Used in co-transport to carry glucose and amino acids across the cell surface membrane

  • also needed for muscle/nerve activity
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5
Q

What role do PO43- ions (phosphate) have?

A

Used in the structure of DNA and RNA, and energy storage in ATP molecules

  • phospholipids which are essential to the cell membrane (phospholipid bilayer)
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