chemicals of life

What are the four main chemicals of life?

Carbohydrates, lipids, proteins, and nucleic acids.

What do carbohydrates primarily serve as?

Energy sources, such as glucose.

What are the three types of carbohydrates?

Monosaccharides, disaccharides, and polysaccharides.

What are lipids primarily used for?

Energy storage, insulation, and making up cellular membranes.

What is the hydrophobic nature of lipids due to?

Long hydrocarbon chains.

What are proteins made up of?

Amino acids linked by peptide bonds.

What roles do proteins serve in biological functions?

Enzymes, structural support, transport, and immune response.

What are the four levels of protein structure?

Primary, secondary, tertiary, and quaternary levels.

What two types of nucleic acids are essential for genetic information?

DNA and RNA.

What are nucleic acids composed of?

Nucleotides, which include a sugar, phosphate group, and nitrogenous base.

What critical roles do nucleic acids play?

Protein synthesis and cell division.

What are the primary functions of carbohydrates in the body?

To provide energy and serve as structural components.

What is a common monosaccharide found in the body?

Glucose.

What is the structure of a phospholipid?

Two fatty acids and a phosphate group attached to a glycerol backbone.

What is an important role of cholesterol in cell membranes?

To maintain fluidity and stability.

What is the basic unit of proteins?

Amino acids.

What is a common source of lipids in the diet?

Foods like oils, butter, and avocados.

What is the significance of the quaternary structure of proteins?

It describes the interaction of multiple polypeptide chains.

What is a key function of RNA?

To act as a messenger carrying instructions from DNA for protein synthesis.

What is the sugar component of DNA?

Deoxyribose.

What chemical bonds link nucleotides together in a nucleic acid?

Phosphodiester bonds.