Cells

Despite differences in size and shape, at some point all cells have DNA and a

• cell wall

• cell membrane

• mitochondria

• nucleus

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NGSS.MS-LS1-2

German Scientists Schleiden and Schwann determined that the base unit of structure and function in living things is the

• atom

• molecule

• cell

• nucleus

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NGSS.MS-LS1-1

The portion of the cell outside the nucleus is called the

• organelle

• cytoplasm

• nucleoleus

• ribosome

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NGSS.MS-LS1-2

Which organelles are known as the "power plants" of the cell because they transfer chemical energy from food to compounds the cell can use?

• mitchondria

• ribosomes

• lysosomes

• vacuoles

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NGSS.MS-LS1-7

Proteins are assembled on

• ribosomes

• vacuoles

• lysosomes

• centrioles

Which two organelles are involved in the movement of a cell in its environment?

• microtubules and centrioles

• flagella and cilia

• centrioles and the cell wall

• cytoskeleton and lysosomes

Solute particles move from an area of higher concentration to an area of lower concentrations in a process called

• osmosis

• transport

• diffusion

• equilibrium

Which of the following statements is part of the cell theory?

• Cells are composed mostly of empty space

• Cells are generally large enough for the unaided eye to see.

• All cells are produced from existing cells.

• Only animals are made up of cells.

A number of scientists made contributions to cell theory. Which scientist was the first to use a light microscope to observe cells in a slice of cork?

• Anton van Leeuwenhoek

• Matthias Schleiden

• Robert Hooke

• Theodor Schwann

What basic concept of biology includes the idea that new cells can be produced only by the division of existing cells?

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NGSS.HS-LS1-4