Biochemistry Review Questions

Front

What is the role of ribosomes in a cell?

Back

Ribosomes are the cellular structures responsible for synthesizing proteins by translating messenger RNA (mRNA) into polypeptide chains.

Front

What does enzyme specificity mean?

Back

Enzyme specificity refers to the ability of an enzyme to select and catalyze a specific substrate among many possible molecules.

Front

What determines the shape of a protein?

Back

The shape of a protein is determined by the arrangement of amino acids in the protein, which is influenced by the sequence of its gene.

Front

What are the four main classes of macromolecules in cells?

Back

The four main classes of macromolecules are carbohydrates, proteins, nucleic acids, and lipids.

Front

What is protein hydrolysis?

Back

Protein hydrolysis is the process of breaking down proteins into smaller peptides or amino acids through the addition of water.

Front

What is denaturation in proteins?

Back

Denaturation is the process in which a protein loses its native structure due to external stress or conditions, such as heat or pH changes.

Front

What is the function of chloroplasts?

Back

Chloroplasts are organelles in plant cells that conduct photosynthesis, converting light energy into chemical energy.

Front

What is the difference between starch and sugar?

Back

Starch is a complex carbohydrate made of long chains of glucose molecules, while sugar (like glucose) is a simple carbohydrate.

Front

What is the significance of enzyme concentration in a reaction?

Back

The concentration of enzymes affects the rate of reaction; higher enzyme concentration generally increases the reaction rate until saturation is reached.

Front

What is the role of minerals in biological systems?

Back

Minerals are essential nutrients that play various roles, including structural components of cells, enzyme cofactors, and electrolytes.