Cell Differentiation
Biology ⇒ Cell Biology
Cell Differentiation starts at 8 and continues till grade 12.
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A scientist observes a group of cells in a developing embryo. Some cells begin to form long extensions, while others flatten out. What process is the scientist observing?
Describe one example of a specialized cell and its function.
Describe the role of environmental signals in cell differentiation.
Describe what happens to a cell’s structure as it differentiates.
Explain how gene expression leads to cell differentiation.
Explain why cell differentiation is necessary in multicellular organisms.
Explain why identical twins can have different cell types in their bodies even though they have the same DNA.
A scientist observes a group of cells in a developing embryo. Some cells begin to form long extensions, while others flatten out. What process is the scientist observing?
Which of the following best describes a stem cell?
(1) A cell that can divide and become any type of cell
(2) A cell that cannot divide
(3) A cell that only forms muscle tissue
(4) A cell that is already specialized
Which of the following best explains why muscle cells and nerve cells look different and perform different functions?
(1) They have different DNA
(2) They express different genes
(3) They are from different organisms
(4) They have different numbers of chromosomes
Which of the following is a correct statement about cell differentiation in plants?
(1) All plant cells remain undifferentiated
(2) Differentiation only occurs in roots
(3) Plant cells can differentiate into various tissues like xylem and phloem
(4) Differentiation is not important in plants
Which of the following is a reason why cell differentiation is important for healing injuries?
(1) It allows specialized cells to replace damaged tissues
(2) It prevents cells from dividing
(3) It causes all cells to become the same
(4) It stops gene expression
Cell differentiation is important for the development of ________ in multicellular organisms.
During embryonic development, cells become specialized through a process called ________.
Fill in the blank: In animals, the fertilized egg is also known as a ________.
Fill in the blank: In plants, the regions where cells remain undifferentiated and can divide to produce new cells are called ________.
True or False: All cells in a multicellular organism have the same DNA.
True or False: Differentiated cells can usually divide to produce more cells of the same type.
True or False: Differentiation only occurs during embryonic development.
True or False: Once a cell has differentiated, it can always return to being a stem cell.
