Understanding Cells: A Quiz

What is the smallest unit of life in living organisms?

• A cell

• An organ

• A tissue

• A molecule

What is the semi-fluid substance that fills the interior of a cell called?

• Cytoplasm

• Cell wall

• Nucleus

• Chloroplast

What is the main characteristic of prokaryotic cells?

• Cells lack a membrane

• DNA is stored in the nucleus

• DNA floats in the cytoplasm

• Cells have multiple nuclei

Which of the following is a unicellular organism?

• Human beings

• Bacteria

• Trees

• Animals

What allows a cell to move?

• Membrane

• Flagellum

• Mitochondrion

• Nucleus

What is the main function of the cell membrane?

• To store DNA

• To produce energy

• To perform photosynthesis

• To allow food in and release waste substances

What is the organelle in charge of producing energy in the cell?

• Nucleus

• Mitochondrion

• Chloroplast

• Ribosome

Which of the following is NOT a characteristic of plant cells?

• They perform photosynthesis

• They contain chloroplasts

• They have a rigid cell wall

• They lack a nucleus

What is stored in the nucleus?

• Chlorophyll

• Food

• DNA

• Cytoplasm

What is the role of chlorophyll in plant cells?

• Producing energy

• Allowing movement

• Storing DNA

• Giving plants their green color and playing a role in photosynthesis