Macromolecules and Properties of Water

What is the difference between saturated and unsaturated fats?

• Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.

• Saturated fats are liquid at room temperature, while unsaturated fats are solid.

• Saturated fats contain more calories than unsaturated fats.

• Saturated fats are healthier than unsaturated fats.

What are the three major types of macromolecules?

• Carbohydrates, Proteins, and Lipids.

• Nucleic Acids, Vitamins, and Minerals.

• Fats, Sugars, and Enzymes.

• Cellulose, Starch, and Glycogen.

What is it called when water molecules stick to each other?

• Adhesion

• Cohesion

• Surface Tension

• Capillarity

Define adhesion in the context of water.

• The tendency of water molecules to stick to other substances.

• The ability of water to dissolve salts and minerals.

• The process of water evaporating into the atmosphere.

• The capacity of water to absorb heat without a significant change in temperature.

What is surface tension?

• The cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.

• The force that pulls liquid molecules downward, creating a meniscus.

• The pressure exerted by a liquid in a closed container.

• The ability of a liquid to flow easily through small openings.

What is the role of proteins in biological systems?

• They serve as enzymes, structural components, and signaling molecules.

• They are primarily used for energy storage.

• They act solely as genetic material.

• They are involved in the transport of oxygen in the blood.

What are the building blocks of proteins?

• Nucleotides

• Fatty acids

• Amino acids

• Monosaccharides

What is the primary function of carbohydrates?

• To provide energy and structural support.

• To store genetic information.

• To act as enzymes in biochemical reactions.

• To transport oxygen in the blood.

What is the significance of hydrogen bonds in water?

• They contribute to water's unique properties, such as high surface tension and specific heat.

• They make water a poor solvent for ionic compounds.

• They allow water to exist in three states at once.

• They increase the density of water at lower temperatures.

Which of the following is NOT one of the major macromolecules: carbohydrates, proteins, lipids, or amino acids?

• Carbohydrates

• Proteins

• Lipids

• Amino acids