Cell Structure and Function Concepts

The video tutorial by Mr. Knife covers cell structures and their functions. It begins with an introduction to cells as the basic unit of life and explains the cell theory, which includes the concepts that all living things are made of cells, cells are the functional units of life, and all cells come from pre-existing cells. The tutorial then delves into the parts of a cell, such as the cell wall, cell membrane, nucleus, cytoplasm, vacuole, mitochondria, ribosomes, endoplasmic reticulum, and Golgi body, explaining their roles and functions in detail.

Which of the following is NOT a part of the cell theory?

• All living things are made up of cells.

• Cells are the basic unit of life.

• Cells can arise spontaneously.

• All cells come from pre-existing cells.

What is the primary function of the cell wall?

• To synthesize proteins.

• To protect and maintain the shape of the cell.

• To store genetic information.

• To control what enters and exits the cell.

The cell membrane is described as being semipermeable. What does this mean?

• It allows only certain substances to pass through.

• It allows all substances to pass through.

• It is impermeable to all substances.

• It is permeable to water only.

What is the main role of the nucleus in a cell?

• To control cell activities and store genetic material.

• To store nutrients.

• To transport substances.

• To produce energy.

Which of the following is a function of the cytoplasm?

• To hold organelles in place and facilitate chemical reactions.

• To produce energy.

• To transport genetic material.

• To synthesize proteins.

What is the primary function of the vacuole in a cell?

• To produce energy.

• To store substances like water, nutrients, and waste.

• To control cell activities.

• To synthesize proteins.

Why is the mitochondria referred to as the powerhouse of the cell?

• It stores genetic information.

• It produces energy through respiration.

• It transports substances.

• It synthesizes proteins.

What is the main function of ribosomes in a cell?

• To transport substances.

• To store energy.

• To control cell activities.

• To synthesize proteins by linking amino acids.

What distinguishes rough ER from smooth ER?

• Rough ER is found in plant cells, while smooth ER is in animal cells.

• Rough ER transports lipids, while smooth ER transports proteins.

• Rough ER stores energy, while smooth ER produces energy.

• Rough ER has ribosomes, while smooth ER does not.

What is the role of the Golgi body in a cell?

• To synthesize DNA.

• To package and transport proteins and lipids.

• To produce energy.

• To control cell activities.