According to the Big Bang Theory, what was the universe like prior to the massive explosion? O A. Everything was condensed into one small, dense point
OB. It was the same as it is today
O C. The universe was much larger than it is today
O
D. Everything could be found in a large cloud of cold gas.

thymine. in rna, thymine is replace by uracil

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the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products