Stem Cell Concepts and Applications

The video discusses stem cells, focusing on their role in differentiation within multicellular organisms. It explains that while all cells contain a complete genome, they express only certain genes to become specialized. The flexibility of stem cells is categorized into totipotent, pluripotent, and multipotent, with varying abilities to differentiate. The video also explores therapeutic uses of stem cells, such as organ growth and spinal cord repair, and encourages students to engage with current events and controversies surrounding stem cell research.

Why do multicellular organisms need to differentiate?

• To increase genetic diversity

• To reduce the number of cells

• To form specialized organs and tissues

• To perform all life functions within a single cell

What is the role of a complete genome in cell differentiation?

• It allows cells to express all genes equally

• It enables cells to become identical

• It provides the genetic information for specialization

• It limits the cell's ability to change form

What is a key characteristic of stem cells?

• They are only found in embryos

• They can differentiate into any cell type

• They have a fixed function

• They cannot divide

Which type of stem cells can become any cell type in the body but not support cells?

• Totipotent

• Multipotent

• Pluripotent

• Unipotent

What is a limitation of multipotent stem cells?

• They can only become muscle cells

• They cannot become any type of blood cell

• They can become any cell type in the body

• They have limited flexibility based on their system

How are stem cells used in regrowing external body parts?

• By genetic modification

• By using chemical treatments

• By grafting cells onto a host organism

• By cloning the entire organism

Why are bladders commonly grown using stem cells?

• They need a lot of vascularization

• They are simple structures

• They require complex structures

• They are the only organs that can be grown

What is a potential use of adult stem cells in medicine?

• To grow new skin cells

• To develop a new blood system

• To create new muscle cells

• To replace damaged nerve cells

What is one of the greatest hopes for stem cell therapy?

• Reversing aging

• Eliminating genetic disorders

• Curing all types of cancer

• Treating spinal cord injuries

What should students prepare for the class discussion on stem cells?

• A current event related to stem cells

• A report on genetic engineering

• A summary of the video

• A list of all stem cell types