FIRST SEMESTER FINAL REVIEW

Front

What is the role of enzymes in chemical reactions?

Back

Enzymes decrease the activation energy of the reaction, allowing it to proceed faster.

Front

What is one of the main principles of cell theory?

Back

Every living thing is made of cells.

Front

How do enzymes affect the speed of reactions and energy usage?

Back

Enzymes make a reaction go faster and use less energy.

Front

What happens to enzymes when they are exposed to high temperatures?

Back

The shape of the enzyme changes and it denatures.

Front

Which organelle is responsible for protein synthesis?

Back

Ribosome.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

Define denaturation in the context of enzymes.

Back

Denaturation is the process where an enzyme loses its functional shape due to external stress, such as heat.

Front

What is the function of ribosomes in a cell?

Back

Ribosomes are responsible for synthesizing proteins by translating messenger RNA.

Front

What is the significance of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.

Front

What distinguishes plant cells from animal cells?

Back

Plant cells have a cell wall and chloroplasts, while animal cells do not.