elements & molecules Flashcards
1
Q
state the number of bonds in hydrogen
A
1
2
Q
state the number of bonds in oxygen
A
2
3
Q
state the number of bonds in nitrogen
A
3
4
Q
state the number of bonds in carbon
A
4
5
Q
what elements make up living organisms?
A
carbon
hydrogen
oxygen
nitrogen
sulfur
phosphorus
6
Q
what is an electrolyte?
A
ions in a solution
7
Q
which elements make up carbohydrates?
A
C, H, O
8
Q
what elements make up lipids?
A
C, H, O
9
Q
what elements make up proteins?
A
C, H, O, N
10
Q
what elements make up nucleic acids?
A
C, H, O, N, P
11
Q
what is a polymer
A
a chain of monomers
12
Q
what is an anabolic reaction?
A
where molecules are built up
13
Q
what is a catabolic reaction?
A
where molecules are broken down
14
Q
what is polymerisation?
A
when monomers bond to form polymers
15
Q
state 3 functions of calcium ions
A
- nerve impulse transmission
- release insulin
- bone formation
