sodium

Question 1

what is the biological role of soidum?

Answer 1

• Osmoregulation: maintenance of body fluids
  □ Na+ electrolytes
  □ Renal therapeutics
  
  • Functioning of neurons and transmission of nerve impulses via build up of electrostatic potential across cell membrane
  • Passive transport mechanism : Na+ ions play a role in contraction of muscles
    Mode of action of several enzymes

Question 2

what is osmosis

Answer 2

diffusion of solvent through a semi permeable membrane towards an area of high solute concentration.

Question 3

what does hypertonic mean?

Answer 3

when the surrounding has a higher concentration