Biochemistry Flashcards
1
Q
Name the six key elements for life
A
carbon hydrogen nitrogen oxygen phosphorus sulphur
2
Q
Name four elements commonly found in proteins
A
hydrogen
carbon
oxygen
nitrogen
3
Q
Name five structures held together with hydrogen bonds
A
Proteins carbohydrates enzyme-substrate complexes antibody-antigen complexes DNA
4
Q
How does a hydrogen bond work
A
When hydrogen is bound to a larger atom to create a polar molecule, the positive hydrogen end of the molecule is attracted to the negative end of another
5
Q
Explain the link between hydrogen bonds and cohesion in water
A
Water is a polar molecule and so the negative oxygen end of one molecule is attracted to the positive hydrogen end of another
