AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best describes stem cells?
A
stem cells can only come from embryos
B
stem cells can only come from adult bone marrow
C
stem cells do not ever change
D
stem cells can develop into different specialized cells
Explanation: 

Detailed explanation-1: -These embryonic stem cells are pluripotent. This means that they can turn into more than one type of cell.

Detailed explanation-2: -Stem cells produce new cells by dividing. In the right conditions, these new cells can then continue to divide and differentiate into specialized cells. Stem cells can also divide to produce new stem cells to replace themselves.

Detailed explanation-3: -Most cells are specialised to perform particular functions, such as red blood cells? that carry oxygen around our bodies in the blood, but they are unable to divide. Stem cells provide new cells for the body as it grows, and replace specialised cells that are damaged or lost.

Detailed explanation-4: -Embryonic stem cells are pluripotent cells, which means they can differentiate into all of the types of specialised cells in the body.

Detailed explanation-5: -Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells.

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