Quest 1 - Biochemistry

Front

What is an enzyme?

Back

A biological catalyst that increases the rate of a chemical reaction without being consumed in the process.

Front

What are the main functions of proteins?

Back

Proteins serve various functions including structural components (e.g., hair, nails), defense (e.g., antibodies), and regulation of cell functions (e.g., enzymes). They do NOT primarily store energy.

Front

What is the primary benefit of perspiration in mammals?

Back

Perspiration cools the body when it evaporates.

Front

What percentage of the cytoplasm is composed of organic material?

Back

Approximately 22%.

Front

What happens to enzymes at high temperatures?

Back

Enzymes can denature, losing their functional shape and activity.

Front

Define denaturation in the context of proteins.

Back

Denaturation is the process where proteins lose their structure and function due to external stress, such as heat or pH changes.

Front

What role do enzymes play in biochemical reactions?

Back

Enzymes lower the activation energy required for reactions, thus speeding up the reaction rate.

Front

What are the building blocks of proteins?

Back

Amino acids are the building blocks of proteins.

Front

What is the difference between a lipid and a carbohydrate?

Back

Lipids are fats and oils used for long-term energy storage, while carbohydrates are sugars and starches used for short-term energy.

Front

What is the function of antibodies?

Back

Antibodies are proteins that help defend the body against pathogens.