Cell Organelles

What Are Organelles?

Organelles are special structures found inside the cytoplasm of eukaryotic cells (cells with a nucleus) that are surrounded by a membrane and have specific jobs. They play important roles in the life of a cell. In animal cells, some key organelles include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles. Ribosomes, though not covered by a membrane, are also considered organelles in eukaryotic cells.

Cell Organelles

Multiple Choice

What is the function of the vacuole?

• Sac that stores water, nutrients, and waste products

• Jelly-like substance within the plasma membrane

• Sac filled with digestive chemicals

• Stack of membranes that packages chemicals

Multiple Choice

A thin, flexible layer that is found in all cells and separates the inside of the cell from the outside environment.

• protein coat

• protein membrane

• cell membrane

• nucleolus

Multiple Choice

What organelle helps with cell digestion?

• lysosomes

• golgi complex

• ribosomes

• endoplasmic reticulum

Multiple Choice

What organelle is called the "powerhouse" of the cell?

• Endoplasmic Reticulum

• Mitochondria

• Nucleus

• Nucleolus

Multiple Choice

I make proteins for the cell. What am I?

• ribosome

• chloroplast

• mitochondria

• lysosome

Multiple Choice

What is the function of the nucleus?

• Structure that organizes motion of chromosomes

• Membrane that surrounds and protects the cell

• Structure that stores genetic information and directs the cell

• Stack of membranes that packages chemicals

Multiple Choice

A rigid layer that lies outside the cell's membrane is...

• cytoskeleton

• cilia

• flagella

• cell wall

Multiple Choice

Where does photosynthesis occur?

• mitochondria

• xylem

• stomata

• chloroplast

Multiple Choice

Amino acids link together to form proteins. In which organelle does this process occur?

• lysosome

• centriole

• ribosome

• mitochondria