Post Test Review LS1-6

Front

What is a carbohydrate?

Back

A carbohydrate is a macromolecule made up of carbon, hydrogen, and oxygen, typically in a ratio of 1:2:1. They are a primary source of energy for living organisms.

Front

What are the main elements found in lipids?

Back

Lipids are primarily composed of carbon (C), hydrogen (H), and oxygen (O). They may also contain phosphorus (P) in certain types of lipids.

Front

What macromolecule group contains fatty acid chains?

Back

Lipids contain fatty acid chains, which are long hydrocarbon chains that can be saturated or unsaturated.

Front

What role do enzymes play in chemical reactions?

Back

Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Front

What are polysaccharides?

Back

Polysaccharides are complex carbohydrates formed by long chains of monosaccharide units. They serve as energy storage (e.g., starch, glycogen) and structural components (e.g., cellulose).

Front

What is the structure of a lipid?

Back

Lipids typically have a hydrophobic tail (fatty acid chains) and a hydrophilic head (glycerol or phosphate group), making them amphipathic.

Front

What is the difference between saturated and unsaturated fats?

Back

Saturated fats have no double bonds between carbon atoms, while unsaturated fats contain one or more double bonds, resulting in a kinked structure.

Front

What is the function of carbohydrates in living organisms?

Back

Carbohydrates provide energy, serve as structural components, and play roles in cell recognition and signaling.

Front

What are the building blocks of proteins?

Back

The building blocks of proteins are amino acids, which link together to form polypeptide chains.

Front

What is the primary function of nucleic acids?

Back

Nucleic acids (DNA and RNA) store and transmit genetic information and are involved in protein synthesis.