Biology Quiz

What is the molecular formula for lactose?

• C12H22O11

• C12H24O12

• C6H12O6

• C11H22O11

Which of the following is a true statement about lipids?

• Lipids are hydrophilic compounds composed largely of carbon and oxygen.

• Lipids consist of glycerol linked to three amino acids.

• Lipids are hydrophobic compounds composed largely of carbon and hydrogen.

• Lipids are primarily composed of nitrogen and phosphorus atoms.

What does the term "empty calories" refer to?

• Calories that are provided by water.

• Calories that come with a high nutrient value.

• Calories that come from foods high in sugar and fat with little nutritional value.

• Calories that are not absorbed by the body.

Which of the following statements about unsaturated fatty acids is true?

• They are typical of animal fats and contain many double bonds.

• They are typical of plant oils and contain no double bonds.

• They are typical of plant oils and contain at least one double bond.

• They are typical of animal fats and contain no double bonds.

What distinguishes saturated fatty acids from unsaturated fatty acids?

• Saturated fatty acids contain fewer hydrogen atoms.

• Saturated fatty acids contain one or more double bonds.

• Saturated fatty acids contain the maximum number of hydrogen atoms.

• Saturated fatty acids are liquid at room temperature.

What is the correct formula for lactose?

• C12H24O12

• C6H12O6

• C18H36O18

• C12H22O11

What does the term "empty calories" mean from a nutrition standpoint?

• Calories with no nutritional value

• Calories from protein-rich foods

• Calories with essential vitamins

• Calories with high fiber content

Which statement is true about unsaturated fatty acids?

• They contain no double bonds.

• They are typical of animal fats.

• They are solid at room temperature.

• They are found in saturated fatty acids.

What do fats with the maximum number of hydrogens represent?

• Saturated fatty acids

• Unsaturated fatty acids

• Monosaccharides

• Amino acids

What does research suggest about the correlation between high sugar intake and health effects?

• No correlation

• Positive correlation

• Negative correlation

• Neutral correlation