Cell Differentiation and DNA Functions

In what way is the DNA of a nerve cell different from the DNA of a muscle cell?

• The DNA is the same but each cell contains different genes
• The DNA is the same but different genes are turned on and turned off in each cell
• The DNA is different, but the same genes are turned on and off in each cell
• The DNA is different, but each cell contains the same genes

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The diagram shows the process of cell specialization from a single stem cell. Which of the following statements is true about the process of specialization.

• Specilized cells (blood, skin, nervous etc) cannot be produced from a single stem cell
• Specilized cells are produced immediately following fertilization
• Even though all the cells in an organism come from one single cell, they can specialize into different cell types
• Sincce all the cells in an organism come from one single cell, they must all have the same structure and function

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Which BEST explains why muscle cells are different from blood cells?

• a mutation occurs during the development of muscle cells but not in blood cells
• different genes are activated in muscle cells than in blood cells
• muscles cells experience different environmental influences than blood cells
• muscle cells are produced by the brain, but blood cells are produced by the heart

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Environmental factors can influence the regulation of gene expression.

• True

• False

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Cell differentiation is critical during embryonic development. The process of cell differentiation results in the production of many different kinds of specialized cells. This process is most directly influenced by

• DNA

• Lipids

• Carbohydrates

• ATP

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What is the role of stem cells in cell differentiation?

• They serve as a precursor for generalized cells

• These cells can turn into specialized cells and back into generalized cells when needed

• They are generalized cells that can lead to specialized cells

• They are specialized cells that can lead to generalized cells

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The division of the nucleus is known as:

• Synthesis
• Mitosis
• G1
• G2

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The cell spends most of it's life in ________________.

• mitosis
• cytokinesis
• Interphase
• None of the above

Put the following stages of mitosis in order: anaphase, prophase, metaphase, and telophase. 

• prophase, metaphase, telophase, anaphase
• prophase, anaphase, metaphase, telophase
• prophase, metaphase, anaphase, telophase
• prophase, telophase, metaphase, anaphase

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Put the following stages of the cell cycle in order: G2, S, G1, M. 

• G1, S, G2, M
• S, G1, G2, M
• G1, M, G2, S
• M, G1, S, G2

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