Question

32. hydrophilic molecules tend to:
a) dissolve in water
b) repel water
c) form long chains
d) act as buffers

33. which of the following biological molecules is primarily hydrophobic?
a) carbohydrates
b) nucleic acids
c) lipids
d) proteins

34. which macromolecule is a source of quick energy for cells?
a) carbohydrates
b) proteins
c) lipids
d) nucleic acids

35. which of the following is a characteristic of nucleic acids?
a) they store genetic information
b) they help transport materials in cells
c) they are made up of amino acids
d) they are used primarily for energy storage

Explanation:

• For 32: Hydrophilic means water - loving, so they dissolve in water.
• For 33: Lipids are non - polar and hydrophobic.
• For 34: Carbohydrates are broken down quickly to release energy for cells.
• For 35: Nucleic acids like DNA and RNA store genetic information.

Answer:

1. a) Dissolve in water
2. c) Lipids
3. a) Carbohydrates
4. a) They store genetic information