Question

1. which of the following is a conditional amino acid?

tyrosine
asparagine
histidine
threonine

1. all of the following are true about lipids except:

they dissolve easily in water.
they contain fewer oxygen atoms than carbohydrates.
they are organic compounds.
they are needed to maintain good health.

Explanation:

• For question 54, tyrosine is a conditional amino - acid. Under normal conditions, the body can synthesize it, but under certain stress or disease conditions, it may need to be obtained from the diet.
• For question 55, lipids are non - polar molecules and do not dissolve easily in water (a polar solvent). They contain fewer oxygen atoms than carbohydrates, are organic compounds, and are essential for maintaining good health.

Answer:

1. Tyrosine
2. They dissolve easily in water.