Cells

Describe the function of a cell wall.

• To protect and support the cell
• To perform different functions in the cell
• To prevent water from passing through cell
• To prevent oxygen from entering cell

Name the organelle that is the control center of the cell.

• mitochonrion
• ribosome
• chloroplast
• nucleus

What is the term that refers to the diffusion of water molecules through a selectively permeable membrane?

• osmosis
• active transport
• engulfing
• facilitated transport

Describe the function of a cell membrane.

• Support the cell
• Perform different functions in each cell
• Control substances entering or leaving the cell
• Form a hard outer covering for the cell

Describe the function of mitochondria.

• Convert energy from food molecules into energy that the cell can use
• Store energy from food molecules
• Store energy from sunlight
• Produce nucleic acids that release energy.

What is the term the identifies the movement of molecules from an area of higher concentration to an area of lower concentration?

• collision
• active transport
• diffusion
• concentration

What term refers to movement of materials through a cell membrane when the cell's energy is required?

• active transport
• passive transport
• collision
• concentration

What term refers to movement of materials through a cell membrane when the cell's energy is not required?

• osmosis
• diffusion
• active transport
• passive transport

Which organelle releases chemicals that break down large food particles into smaller ones?

• endoplasmic reticulum
• Golgi bodies
• lysosomes
• vacuoles

Which organelle acts as a storage center?

• vacuole
• endoplasmic reticulum
• Golgi bodies
• mitochondria