Pearson Interactive Life Science Cells

All living things are made of of tiny structures called cells.

• true
• false

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This scientist was the first person to describe cells.

• Schwann
• Hooke
• Virchow
• Leeuwenhoek

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Where do all cells come from?

• animals
• ponds
• cells
• eggs

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What keeps the size of cells very small?

• There hard shells.
• the surface area - to - volume ratio
• food and wastes
• their thin surface

What part of the cell forms a barrier between an animal cell and its environment?

• cell membrane
• cell wall
• ribosome
• cholesterol

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What part of the cell keeps the cell from collapsing?

• cell wall
• cytoplasm
• cytoskeleton
• nucleus

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A cell's nucleus contains DNA, which carries genetic material with 

• ribosomes
• the cytoskeleton
• the endoplasmic reticulum
• instructions for how to make protein

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What part of the cell acts as the cell's delivery system?

• nucleus
• nucleolis
• mitochondrion
• endoplasmic reticulum

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The part of the cell that keeps the cytoplasm inside and controls materials going in and out of the cell.

• archaebacteria
• cell membrane
• eubacteria

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Prokayotes that include such types as heat-loving, salt-loving, and methane-making.

• nucleus
• multicellular
• archaebacteria
• eukaryote