On the cell wall maybe? I’m not sure. Guess
Answer:
<u>Pro:</u>
May hold answers to cure various diseases including Alzheimer's and Parkinson's - these may be answers to various diseases that are not able to cure.
Requires a small number of cells because of the fast replication rate - these are able to produce a high amount of cells in the lab as they are able to replicate faster.
Medical benefits such as regenerating organ tissue and therapeutic cell cloning
<u>cons:</u>
ethical controversy over use of stem cells from lab fertilized human egg - there is an ethical controversy around the use of lab fertilized human egg
unproven treatments often come with high rejection rates - these researches provide uncertain results and not tested and easily affected so the rate of rejection is high
The cost can be prohibited for many patients - these require high cost and can not be in the budget of every patient.
If you know the reaction of photosynthesis (CO^2+H^2O>C^6H^12O^6+O^2) Then you know cellular respiration. Because you just flip the whole equation around from photosynthesis and then you have cellular respiration.
That would be Directional Selection so the answer is D.
Water the plant or put it in the sun