Problem:
Question 1: How is the genomic DNA in a stem cell most likely different from the genomic DNA in a differentiated cell?
- All of the genes of DNA in stem cells are inactivated.
- Stem cell genomic DNA has experienced few, if any, permanent changes in its gene expression profile.
- Most genes in stem cells have been permanently activated.
- Stem cells only produce proteins that allow other cells to differentiate.
- Stem cells express less of their DNA than do fully differentiated cells.
Question 2: An apoptotic signal arising from within the cell is an example of one that will activate the ___ pathway.
- intrinsic
- caspase
- death receptor
- autophagy
- extrinsic
Question 3: How does a single embryonic stem cell give rise to daughter cells that are liver cells and other daughter cells that are skin cells?
- through division alone
- through morphogenesis and division
- through division and differentiation
- through differentiation alone
- through morphogenesis and differentiation
Question 4: Which statement correctly describes stem cells?
- An embryonic stem cell is a cell in an organism that may divide indefinitely and has the ability to differentiate into different types of cells.
- An adult stem cell is a cell that has the ability to give rise to an entire organism.
- All types of stem cells can give rise to all the different types of cells in an organism.
- Stem cells are cells that come from embryos.
- Stem cells divide only into other stem cells.
Give reasoning with your answer.