All cells come from preexisting cells. a cell divides its dna in a process known as and its cytoplasmic contents in a process known as , producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. cells that can divide without becoming a specific cell type (i. e. skin cells) are known as . when stem cells undergo mitosis and divide, they produce two cells. one cell remains a stem cell and the other is a partially specialized cell known as a cell. cells undergo a process of specialization or determination called to become neurons, muscle cells, or skin cells. stem cells are the source of all different cell types.

All cells come from preexisting cells. A cell divides its DNA in a process known as mitosis and its cytoplasmic contents in a process known as cytokinesis, producing two new daughter cells while all life begins as a single cell, the human body is not just one cell type. Cells that can divide without becoming a specific cell type (i.e. skin cells) are known as stem cells. When stem cells undergo mitosis and divide, they produce two cells. One cell remains a stem cell and the other is a partially specialized cell known as a progenitor cell. Cells undergo a process of specialization or determination called differentiation to become neurons, muscle cells, or skin cells. Stem cells are the source of all different cell types.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.