Topic 2 - The Cell System Vocabulary

What is the basic unit of structure and function in living things?

• Organelle

• Cell

• Nucleus

• Mitochondria

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An instrument that makes small objects look larger is called a _______.

• Microscope

• Telescope

• Periscope

• Stethoscope

What is a widely accepted explanation of the relationship between cells and living things?

• Cell theory

• Microscope

• Organelle

• Cytoplasm

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A tiny cell structure that carries out a specific function within the cell is known as a _______.

• Organelle

• Nucleus

• Cytoplasm

• Membrane

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What is a rigid supporting layer that surrounds the cells of plants and some other organisms?

• Cell membrane

• Cell wall

• Cytoplasm

• Nucleus

A thin, flexible barrier that surrounds a cell and controls which substances pass into and out of a cell is called a _______.

• Cell membrane

• Cell wall

• Nucleus

• Cytoplasm

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The thick fluid region of a cell located inside the cell membrane (in prokaryotes) or between the cell membrane and nucleus (in eukaryotes) is known as _______.

• Cytoplasm

• Nucleoplasm

• Chloroplast

• Mitochondria

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In cells, a large oval organelle that contains the cell’s genetic material in the form of DNA and controls many of the cell’s activities is called the _______.

• Nucleus

• Mitochondria

• Ribosome

• Chloroplast

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Rod-shaped organelles that convert energy in food molecules to energy the cell can use to carry out its functions are known as _______.

• Mitochondria

• Ribosomes

• Chloroplasts

• Lysosomes

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An organelle in the cells of plants and some other organisms that captures energy from sunlight and changes it to an energy form that cells can use in making food is called a _______.

• Chloroplast

• Mitochondria

• Nucleus

• Ribosome

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