I think that having an extra chromosome 21 is tolerable to the point that someone with this condition can survive to maturity because it does not replicate.
There should only be a pair of chromosome 21. In the event that there are 3 chromosome 21, the person that has this extra chromosome has Down syndrome. Changes in the number and structure of this chromosome may result to delayed development, intellectual disability, but not immediate death.
Answer:
amoeba !
it should be if ur in grade 9
Explanation:
Answer:
ATP and NADPH
Explanation:
The photosynthetic process carried out by plants involves two distinct stages: the light-dependent stage and the Light-independent stage. The light-dependent stage occurs in the thylakoid membrane of the CHLOROPLAST and it involves a series of chemical reactions that results in the formation of an energy storage molecule (ATP) and reduced electron carrier (NADPH).
These molecules enters the Calvin cycle or light-independent stage. The chemical energy of ATP and reducing ability of NADPH are used to phosphorylate and reduce a 3-carbon compound (PGA) in the Calvin cycle. These two molecules (NADPH and ATP) are important to keep the Calvin cycle in place. Hence, the Calvin cycle is dependent on the light reaction and this two molecules link the two stages.
So you don’t tear any tissue and so they get more elastic.
