Lesson Worksheet: Stem Cells Biology
In this worksheet, we will practice recalling the location and function of stem cells and explaining how they can be used in medicine.
True or False: Stem cells could be used to treat a range of disorders and diseases, including paralysis, dementia, and infertility.
Where are stem cells found in plants?
- ARoot hair cells
- BPalisade cells
Macular degeneration is when the light-sensitive cells in the center of your eye stop working. Which of the following best explains how stem cells could be used to treat someone with macular degeneration?
- AStem cells cannot be used to treat this condition.
- BStem cells can be used to create an entire eyeball and replace the eye of someone with this condition.
- CStem cells can stimulate the immune response to repair the damaged cells.
- DStem cells can be stimulated to differentiate into light-sensitive cells to replace the damaged ones.
- EStem cells can be inserted into the eye to fix the damaged cells.
What makes stem cells different form other types of body cells?
- AStem cells do not contain genetic material, whereas the other body cells do.
- BStem cells can divide and replicate, whereas the other body cells cannot.
- CStem cells are only found in embryos, whereas the other body cells are only found in adults.
- DStem cells are unspecialised, whereas the other body cells are specialised to carry out a particular function.
- EStem cells are specialised to carry out a particular function, whereas the other body cells are unspecialised.
What is the key difference between embryonic and adult stem cells?
- AAdult stem cells can differentiate to become any type of specialized cell, but embryonic stem cells can only become certain types of cells.
- BEmbryonic stem cells can differentiate to become any type of specialized cell, but adult stem cells can only become certain types of cells.
- CThey do not differ in any of their properties.
- DLarge numbers of adult stem cells can be easily grown in culture, but embryonic stem cells can only divide inside the body of the embryo.
- EAdult stem cells can divide rapidly to make new cells, but embryonic stem cells take a long time to divide and generate new cells.
Which of the following is a benefit of having stem cells in the body of a human adult?
- AIf cells are damaged by injury or disease, stem cells can divide and create new cells to replace them.
- BAdult stem cells can specialize into all the different types of cells in the body.
- CAdult stem cells contain large amounts of hemoglobin to carry oxygen around the body.
- DAdult stem cells can transmit electrical impulses to allow a rapid response to danger.
- EAdult stem cells can be used in reproduction.
Which of the following is the correct definition of stem cells?
- AStem cells are undifferentiated cells that stay unspecialized.
- BStem cells are undifferentiated cells that can develop into any type of specialized cell.
- CStem cells are specialized cells found in the body that carry out certain functions.
- DStem cells are undifferentiated cells that are only found in adult tissue.
- EStem cells are undifferentiated cells found only in plants.
The picture provided shows a centrifuge, which can be used in cell fractionation. Which of the following best explains how a centrifuge works?
- AIt heats the sample of cells up to denature the enzymes and separate them from the rest of the cell.
- BIt spins samples of tissue at different speeds to separate cell components based on size or density.
- CIt cuts pieces of DNA into smaller pieces, and then it clones them.
- DIt uses external magnets to attract different organelles and separate them from the rest of the cell.
The picture provided shows a centrifuge, which can separate cell components using cell fractionation. Why is cell fractionation useful to scientists?
- AHarmful cells, like pathogens, can be destroyed to prevent them from infecting humans.
- BCell fractionation allows specialized cells to be created from undifferentiated ones.
- CCell fractionation can be used to separate different types of cells from the same tissue.
- DOrganelles and other cellular components can be studied in more detail once separated.
The diagram provided indicates some of the ways in which stem cells can be used in medicine. Based on this diagram, which of the following conclusions about using stem cells in medicine is incorrect?
- AStem cells could be used to produce an embryo via artificial reproduction (IVF).
- BStem cells could be used to treat brain disorders, such as Parkinson’s disease.
- CStem cells can be used to replace cells in the pancreas that no longer produce insulin.
- DStem cells could be used to replace damaged heart cells after a heart attack.