Proteins are one of the many molecules that are produced by cells. DNA provides the blueprint (instructions) for what protein is being made. Which other structures (organelles) are involved in producing a protein? Explain how these structures work together in the cell system to produce a protein.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it