Question

which statements are true about the hydrophobic nature of lipids? check all that apply.
both lipids and water are non - polar explaining why lipids are hydrophobic and water is hydrophilic.
since water is polar and lipids are non - polar no hydrogen bonds can form between lipids and water making lipids hydrophobic.
water cannot form hydrogen bonds with lipids explaining why they are hydrophobic.
lipids can form hydrogen bonds with water which makes them hydrophobic.
non polar molecules like lipids cannot form hydrogen bonds with water which defines them as hydrophobic.
which of the following is not considered one of the four main biological molecules?
nucleic acids
water
proteins
carbohydrates
lipids/fats

Explanation:

• For the first question:
• Lipids are non - polar and water is polar. Hydrogen bonds form between polar molecules. Since lipids are non - polar, they cannot form hydrogen bonds with water (which is polar), making them hydrophobic.
• Option 1 is wrong because water is polar. Option 4 is wrong because lipids cannot form hydrogen bonds with water.
• For the second question:
• The four main biological molecules are nucleic acids, proteins, carbohydrates, and lipids. Water is not one of the four main biological molecules.

Answer:

• First question:
• Second option: Since water is polar and lipids are non - polar no hydrogen bonds can form between lipids and water making lipids hydrophobic.
• Third option: Water cannot form hydrogen bonds with lipids explaining why they are hydrophobic.
• Fifth option: Non polar molecules like lipids cannot form hydrogen bonds with water which defines them as hydrophobic.
• Second question: Water