The substrate and the active site both need to fit together perfectly in order for the enzyme to work properly. If their shape is changed, typically through heat or a change in pH, the enzyme will not work.
Answer:
the work done by you on the machine is called input work. the work done by a machine is called output work.
Answer:
5' AUGUUUGAUCUU 3'
Explanation:
The nucleotide bases for mRNA are Adenine, Guanine, Cytosine, and Uracil. Uracil replaces Thymine (it's DNA counterpart). From this, you can eliminate options C and D.
Then it is just matching pairs: Adenine = Uracil , Cytosine = Guanine.
3' TACAAACTAGAA 5'
5' AUGUUUGAUCUU 3'