Stem cells are undifferentiated cells that could develop to perform a variety of tasks. One type of stem cell is the embrionic stem cell. There are also adult stem cells. To use embrionic stem cell you need to have fertilized embrios. These can be donated to research. The use of the embrionic stem cells is controversial for this reason.
45 is Option 3. Number 44 is 2. Number 43 is 2. Number 42 is 2 and number 41 is Hemlock so 3
D....carbon can also form triple and quadruple bonds
the answer to this problem is c
Answer:
option B is correct
Explanation:
the effect of external physical factor on cell division is clearly seen on in density dependent inhibition( a phenomenon in which crowded cell stop dividing)