Chapter 2 Test- The Chemical Basis of Life

Front

What is the primary function of proteins in the body?

Back

Proteins serve various functions including making up antibodies, acting as catalysts (enzymes) to control chemical reactions, and forming parts of tissues such as bone and muscle.

Front

Which organic molecule is primarily responsible for insulation in animal tissues?

Back

Lipids are the organic molecules that function in insulation, helping animals conserve heat.

Front

What is the relationship between amino acids and proteins?

Back

Amino acids are the building blocks of proteins.

Front

What is the role of nucleic acids in living organisms?

Back

Nucleic acids, such as DNA and RNA, store and transmit genetic information.

Front

Which organic molecule is primarily used for energy in living organisms?

Back

Carbohydrates are primarily used for energy in living organisms.

Front

What is the weakest acid among the following: bananas (pH 5), tomatoes (pH 4), cheese (pH 6), orange juice (pH 3)?

Back

Cheese (pH 6) is the weakest acid among the options.

Front

What is a substrate in the context of enzyme activity?

Back

A substrate is the substance on which an enzyme acts.

Front

What is the function of enzymes in biological systems?

Back

Enzymes act as catalysts that speed up chemical reactions in biological systems.

Front

What are lipids and their functions in the body?

Back

Lipids are organic molecules that serve as energy storage, insulation, and make up cell membranes.

Front

Define the term 'pH'.

Back

pH is a measure of the acidity or basicity of a solution, with lower values being more acidic and higher values being more basic.