Cellular Specialization

Mr. Anderson's video on cellular specialization explains how cells develop into tissues and organs, highlighting research on organ growth by Anthony Antala and Doris Taylor. The video covers cell organization, the role of internal and external signals, and the differentiation process of stem cells. It also discusses transcription factors and their impact on gene expression, including responses to external stimuli like temperature changes.

What is the primary focus of cellular specialization?

• The chemical composition of DNA.

• How cells become tissues, tissues become organs, and organs become organisms.

• The study of animal behavior.

• The process of photosynthesis in plants.

Which of the following is an example of an external signal that influences cell differentiation?

• The cell's location within the body.

• Temperature changes.

• The cell's own DNA.

• The cell's age.

What are pluripotent stem cells capable of?

• Becoming any type of cell, including forming a new organism.

• Becoming any type of cell except forming a new organism.

• Only becoming nerve cells.

• Only becoming muscle cells.

What is the role of transcription factors in cells?

• They provide energy to the cell.

• They determine the cell's shape.

• They regulate which genes are turned on or off.

• They transport nutrients into the cell.

How does the SRY gene influence development?

• It affects the size of the brain.

• It controls the growth of hair.

• It triggers the development of male characteristics.

• It determines the color of the eyes.

What happens to heat shock factors when the temperature increases?

• They dissolve in the cytoplasm.

• They move into the nuclei and produce heat shock proteins.

• They become inactive.

• They cause the cell to shrink.

What is the significance of transcription factors coming from outside the cell?

• They can alter the cell's DNA sequence.

• They have no effect on the cell.

• They can influence gene expression based on external stimuli.

• They only affect plant cells.