Unit 1 Review

Front

What are lipids?

Back

Lipids are a group of organic compounds that include fats, oils, and waxes. They are hydrophobic (do not mix with water) and are important for energy storage, insulation, and cellular structure.

Front

What is a base?

Back

A base is a substance that has a pH greater than 7. Bases can accept protons (H+) or donate electron pairs in reactions.

Front

Why is water considered a universal solvent?

Back

Water is considered a universal solvent because it can dissolve a wide variety of substances due to its polar nature, allowing it to interact with and separate molecules.

Front

What are examples of carbohydrates?

Back

Examples of carbohydrates include glucose, fructose, cellulose, and lactose. They are essential for providing energy and structural support in living organisms.

Front

What is surface tension?

Back

Surface tension is the tightness across the surface of a liquid, caused by the attraction of molecules. It allows objects, like paper clips, to float on water.

Front

What are the main functions of lipids in the body?

Back

Lipids serve several functions, including energy storage, forming cell membranes, and acting as signaling molecules.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is the difference between an acid and a base?

Back

An acid is a substance with a pH less than 7 that donates protons (H+) in a solution, while a base has a pH greater than 7 and accepts protons.

Front

What role does water play in biological systems?

Back

Water is crucial for life as it acts as a solvent, regulates temperature, participates in chemical reactions, and provides structure to cells.

Front

What is polarity in molecules?

Back

Polarity refers to the distribution of electrical charge over the atoms in a molecule, leading to regions of partial positive and negative charge.