Contains a nucleotide consisting of deoxyribose, phosphate group and uracil DNA only
RNA only
Both DNA and RNA
Neither DNA nor RNA

How can you keep track of variables in a science experiment?

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen