Lesson 25: Specialized Cells

During the non-dividing stage of its life cycle, a cell becomes specialized when -

• The homologous chromosomes exchange segments of DNA

• One allele is masked by the presence of the other

• A specific gene, or set of genes, is activated

• The nuclear membrane disappears

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Embryonic _______ cells can give rise to almost any type of cell.

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An epithelial cell is -

• unspecialized cell

• specialized animal cell

• specialized plant cell

• stem cell

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Which of the following correctly describes cell differentiation?

• A cellular process by which cells change and specialize

• A cellular process that takes place only during a dividing phase of the cell

• A cellular process by which the cell produces two daughter cells

• A cellular process thatr takes place during meiosis

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Select all the answers below that correctly describe structure and function in cells.

• The structure of a specialized animal cell enables it to do its job

• Function is the role the cell performs in the organism

• Structure is the size and shape of the cell

• All specialized cells have similar structure and function

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A cell that is not yet specialized is called a ____ cell.

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A cell that is adapted to a particular function or environment is -

• unicellular

• specialized

• multicellular

• DNA

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Each of the following is an example of a specialized cell in animals except

• stem cells

• muscle cells

• nerve cells

• blood cells

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The process of cell differentiation occurs during -

• anaphase, or G2

• telophase or cytokinesis

• interphase or G0

• metaphase or G1

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Which of the following is an example of a unicellular organism?

• a plant

• a paramecium

• a jellyfish

• a mushroom

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