Inorganic ions (2)

Question 1

What are inorganic ions?

Answer 1

ions that do not contain carbon atoms

Question 2

Where are inorganic ions found?

Answer 2

• in cytoplasm + extracellular fluid
• may be in high or low concentrations

Question 3

What are the 4 types of inorganic ions?

Answer 3

1) hydrogen ions
2) iron ions
3) sodium ions
4) phosphate ions

Question 4

What is the role of hydrogen ions?

Answer 4

interact with h-bonds + ionic bonds in tertiary structure of proteins, which can cause them to denature

Question 5

What is the role of iron ions?

Answer 5

form haem group in haemoglobin

Question 6

What is the role of sodium ions?

Answer 6

• involved in co-transport for absorption of glucose + amino acids in lumen of gut
• involved in propagation of action potentials in neurons

Question 7

What is the role of phosphate ions?

Answer 7

component of DNA, ATP, NADP and cAMP

Question 8

What is the structure of a haem group?

Answer 8

binding site to transport 1 molecule of oxygen around body via bloodstream

Question 9

What is the structure of haemoglobin?

Answer 9

4 haem groups

Question 10

What causes a low pH?

Answer 10

high concentration of hydrogen ions

Question 11

What happens if there is a high concentration of hydrogen ions?

Answer 11

low pH