MEDIUM
AS and A Level
IMPORTANT
Earn 100
State three similarities and three differences between cellulose and collagen.
Important Questions on Biological Molecules
MEDIUM
AS and A Level
IMPORTANT
Copy Table 2.1. Fill in the blanks in the second column of the table using the words below: hydrophilic haemoglobin ionic bond hydrophobic disaccharide disulfide bond Try with a partner to make a similar table with different statements based on the topics in this chapter. Try it out on other students.
| Description | Word/Term |
| term for water hating | |
| broken by a reduction reaction | |
| formed by a condensation reaction | |
| characteristic of globular proteins | |
| has two alpha chains and beta chains | |
| can be broken by pH changes |
EASY
AS and A Level
IMPORTANT
'The protein-folding problem' box at the beginning of this chapter discussed how scientists are trying to predict the final shapes of proteins from a knowledge of their primary structures. What information about amino acids and proteins would be relevant to feed into a computer program trying to make such predictions?
EASY
AS and A Level
IMPORTANT
State the property of water that helps to explain the cooling of skin during sweating.
EASY
AS and A Level
IMPORTANT
State the property of water that helps explain the transport of glucose and ions in a mammal.
MEDIUM
AS and A Level
IMPORTANT
State the property of water that helps to explain why much smaller temperature fluctuations occurs in lakes and oceans than in terrestrial (land-based) habitats.
EASY
AS and A Level
IMPORTANT
Which term describes both collagen and haemoglobin?
EASY
AS and A Level
IMPORTANT
What type of chemical reaction is involved in the formation of disulfide bonds?
EASY
AS and A Level
IMPORTANT
Which diagram best represents the arrangement of water molecules around sodium (Na+) and chloride (Cl-) ions in solution?
