Question

1. chemosinosis occurs in?

2. which enzyme physically copies a DNA strand in DNA replication?

3.Exothermic reactions require what?

4. when an enzyme runs a chemical reaction what happens to the enzyme at the end of the reaction?

5. what are the factors that affect an enzyme 3 dimensional structure?

6. when the codon read UAA what happens?

Answer 1

1. Chemosinosis occurs in the mitochondria and chloroplasts as well as in bacteria and archaea.

2. Helicase enzyme physically copies a DNA strand in DNA replication. It helps to separate the two strands of DNA at the time of replication.

3. An exothermic reaction is a chemical reaction that releases heat. It gives energy to the surrounding. It requires the energy to initiate the reaction is less than the energy is released. When it collects the heat then the reaction is exothermic.

4. The enzyme returns to its original state after complete the reaction They remain unchanged by the reactions they catalyze.

5. There are several factors that affect the enzyme 3-dimensional structure:-

a) Enzyme Concentration

b) pH

c) Temperature

d) Presence of activators

6. The codon UAA helps to end the number of amino acids that buildup the portion of the molecule.