Radiosotopes have been used in all the four fields mentioned in the options. Nevertheless, the use of radioisotopes in light fixtures has been replaced with photoluminiscent materials.
Then the answer is the option D. Light fixtures.
C. -1.9C Because the freezing temperature of salt water is lower than fresh water.
Answer: c. Transition Reaction
Explanation:
During the transition reaction, Acetyl-CoA is formed and connects the first stage of glycolysis with the Krebs Cycle (Citric Acid Cycle). In the presence of oxygen, pyruvate enters the mitochondria and is oxidized to form a compound of 2 carbon, acetate, with energy and CO2 release. During this process, the acetate binds to a coenzyme(coenzyme A (CoA)) - forming the acetyl-coenzyme A.
The 3 steps:
1. pyruvate is oxidized and forms acetate with liberation of CO2;
2. the energy released in the oxidation of pyruvate is stored in the reduction reaction of NAD+ to NADH + H+
3. The acetate molecule combines with coenzyme A to form acetyl-coenzyme A.
Explanation:
Virus don't replicate itself. The virus attaches to the host cell and injects its DNA. Using the host's cellular metabolism, the viral DNA begins to replicate and form proteins.Then fully formed viruses assemble. These viruses break, or lyse, the cell and spread to other cells to continue the cycle.
THIS WILL BE CALLED AS LYTIC CYCLE