Cell Structures and Membrane Functions

What is the function of the plasma membrane in a cell?

• The plasma membrane controls the movement of substances in and out of the cell.

• The plasma membrane produces energy for the cell.

• The plasma membrane stores genetic information.

• The plasma membrane synthesizes proteins.

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

• The nucleus stores the cell's genetic material and coordinates activities like growth and reproduction.

• The nucleus produces energy for the cell through cellular respiration.

• The nucleus is responsible for protein synthesis in the cell.

• The nucleus transports materials throughout the cell.

What is the cytoplasm?

• The cytoplasm is the jelly-like substance within the cell that contains organelles and is the site of most cellular activities.

• The cytoplasm is the outermost layer of the cell that protects it from the environment.

• The cytoplasm is the genetic material found inside the nucleus of the cell.

• The cytoplasm is a rigid structure that gives the cell its shape and support.

Which phase of the cell cycle involves the cell growing and replicating its DNA?

• Interphase

• Metaphase

• Anaphase

• Telophase

During which process does the cell divide its nucleus and genetic material?

• Mitosis

• Photosynthesis

• Respiration

• Osmosis

What is cytokinesis?

• Cytokinesis is the process where the cytoplasm of a single eukaryotic cell is divided to form two daughter cells.

• Cytokinesis is the process where DNA is replicated in the nucleus.

• Cytokinesis is the process where chromosomes align at the cell equator.

• Cytokinesis is the process where the nuclear envelope dissolves.

What is Brownian movement?

• Brownian movement is the random motion of particles suspended in a fluid resulting from their collision with fast-moving molecules in the fluid.

• Brownian movement is the uniform motion of particles in a straight line due to gravity.

• Brownian movement is the process of particles settling at the bottom of a fluid due to their weight.

• Brownian movement is the movement of particles caused by magnetic fields in a fluid.

What is diffusion?

• Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

• Diffusion is the process of water moving from a lower concentration to a higher concentration through a membrane.

• Diffusion is the movement of molecules from an area of lower concentration to an area of higher concentration.

• Diffusion is the process by which solids turn directly into gases.

What is osmosis?

• Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

• Osmosis is the movement of solute molecules through a membrane from an area of higher concentration to an area of lower concentration.

• Osmosis is the process by which plants convert sunlight into energy.

• Osmosis is the breakdown of food into smaller molecules in the stomach.

What is the structural and functional unit of all organisms?

• Cell

• Tissue

• Organ

• Organ system