Living Environment Cells and Life Processes Regents Review

Front

What is the primary function of proteins in living organisms?

Back

Proteins serve as building blocks for cells, act as enzymes to catalyze biochemical reactions, and play roles in cell signaling and immune responses.

Front

What is the role of lysosomes in a cell?

Back

Lysosomes contain digestive enzymes that break down waste materials and cellular debris.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and structural support.

Front

Where do most energy-releasing reactions from carbohydrates occur in a cell?

Back

Most energy-releasing reactions from carbohydrates occur in the mitochondria.

Front

What is the significance of receptors on a cell?

Back

Receptors allow cells to receive and respond to chemical signals, such as hormones.

Front

What is the difference between single-celled and multicellular organisms?

Back

Single-celled organisms consist of one cell that performs all life functions, while multicellular organisms have specialized cells that perform specific functions.

Front

What is the function of the nucleus in a cell?

Back

The nucleus contains the cell's genetic material (DNA) and controls cellular activities.

Front

What are organelles?

Back

Organelles are specialized structures within a cell that perform distinct processes, similar to organs in a multicellular organism.

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are known as the powerhouse of the cell, where energy (ATP) is produced through cellular respiration.

Front

What is the process of cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.