How Do Human Cells Work?

What is the basic building block of all living things?

• Atom

• Cell

• Organ

• Tissue

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Which part of the cell is described as the outer layer that surrounds the cell and works like a gate, letting good things in and keeping bad things out?

• Nucleus

• Cytoplasm

• Cell Membrane

• Mitochondria

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Fill in the blank: The ________ is the jelly-like liquid inside the cell that holds all the other parts in place.

• Cytoplasm

• Nucleus

• Cell wall

• Mitochondria

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What is the function of the nucleus in a cell?

• The nucleus is the 'control center' of the cell. It tells the cell what to do.

• The nucleus produces energy for the cell.

• The nucleus digests waste materials in the cell.

• The nucleus helps the cell move.

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Match the following cell parts with their functions:

• Outer layer that surrounds the cell

• Mitochondria

• Control center of the cell

• Cell Membrane

• Makes energy for the cell

• Nucleus

• Jelly-like liquid inside the cell

• Cytoplasm

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Look at the diagram of the human cell. Which part is labeled as the 'power plant' of the cell?

• Mitochondrion

• Nucleus

• Ribosome

• Golgi apparatus

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How do molecules like oxygen, water, and nutrients get into your cells?

• By jumping into the cell

• Through eating, breathing, and crossing the cell membrane

• By magic

• By sleeping

What is the process called when molecules move from where there’s a lot of them to where there’s less of them?

• Diffusion

• Osmosis

• Evaporation

• Condensation

Active transport requires energy to move molecules into the cell.

• True

• False

What do cells use the molecules for once they are inside the cell?

• To make energy, build parts of the cell, or help the cell grow and repair itself.

• To store waste products permanently.

• To destroy the cell membrane.

• To stop all cellular activities.

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