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WJEC AS Biology > Biochemistry > Flashcards

Flashcards in Biochemistry Deck (5)
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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