elements and ions

Question 1

elements in carbohydrates

Answer 1

C, H, O

Question 2

elements in lipids

Answer 2

C, H, O

Question 3

elements in proteins

Answer 3

C, H, O, N, S

Question 4

elements in nucleic acids

Answer 4

C, H, O, N, P

Question 5

which elements make up living organisms

Answer 5

carbon
hydrogen
oxygen
nitrogen
sulfur
phosphorus

Question 6

functions of calcium ions Ca2+

Answer 6

nerve impulse transmission
muscle contraction

Question 7

functions of sodium ions Na+

Answer 7

nerve impulse transmission
kidney function

Question 8

functions of potassium ions K+

Answer 8

nerve impulse transmission
stomatal opening

Question 9

functions of hydrogen ions H+

Answer 9

catalysis of reactions, pH determinationf

Question 10

function of ammonium ions NH4+

Answer 10

production of nitrate ions by bacteria

Question 11

function of nitrate ions NO3-

Answer 11

nitrogen supply to plants for amino acid and protein formation

Question 12

function of hydrogen carbonate ions HCO3-

Answer 12

maintenance of blood pH

Question 13

function of chloride ions Cl-

Answer 13

balance and charge of sodium and potassium ions in cells

Question 14

functions of phosphate ions PO4 3-

Answer 14

cell membrane formation
nucleic acid and ATP formation
bone formation

Question 15

functions of hydroxide ions OH-

Answer 15

catalysis of reactions
pH determination

Question 16

number of bonds in hydrogen

Answer 16

1

Question 17

number of bonds in oxygen

Answer 17

2

Question 18

number of bonds in nitrogen

Answer 18

3

Question 19

number of bonds in carbon

Answer 19

4

Question 20

anabolic reaction

Answer 20

molecules are built up

Question 21

catabolic reaction

Answer 21

molecules are broken down

Question 22

what is polymerisation

Answer 22

when monomers bond to form polymers

Question 23

monomer

Answer 23

the singular units from which larger molecules are made

Question 24

polymer

Answer 24

molecules made from many repeating monomer units chemically joined together

Question 25

polymer of glucose

Answer 25

starch
cellulose
glycogen

Question 26

polymer of amino acid

Answer 26

protein

Question 27

polymer of nucleic acid

Answer 27

RNA
DNA

Question 28

formation of macromolecules

Answer 28

glucose molecules can be joined together to make polysaccharides