inorganic ions

Question 1

what is an irnorganic ions?

Answer 1

ions that do not contain carbon

Question 2

what is the role of an IRON ion?

Answer 2

binds to oxygen

haemoglobin = 4 polypeptide chains that each contain 1 Fe2+

Question 3

what is the role of a HYDROGEN ion?

Answer 3

determines the pH of a concentration (fewer h+ ions = higher pH)
conc of H+ is important for enzyme controlled reactions

Question 4

what is the role of a SODIUM ion/?

Answer 4

transport of glucose and amino acids across cell surface membrane (CO-TRANSPORT)
transmission of nerve impulses

Question 5

what is the role of a PHOSPHATE ion?

Answer 5

allows individual nucleotides to join up (for DNA,RNA,ATP)
phospholipids

Question 6

what is the role of a CALCIUM ion?

Answer 6

helps regulate the transmission of nerve impulses from neurone to neurone
stimulates muscle contraction
regulates protein channels+membrane permeability
enzymes are activated by calcium ions