Sickle cell anemia is a disease in which red blood cells become irregularly shaped. The disease is caused by the presence of an incorrect amino acid

in a certain protein. The disease most likely occurred due to an altered

sequence of nitrogenous bases in the-*

-original DNA in the nucleus

-transcribed mRNA strand

-tRNA on the ribosome

-complementary DNA strands

the index of refraction of the second medium is higher. i just took the test trust me !

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

i won't lie i don't know so go online and ask google thats what i do