Question

Can radiation change our DNA? And if it does how does it happen?

If certain enzymes were removed from a given system, how could this affect a given body?

Answer 1

Radiations can have a direct and indirect effect on genetic content i.e. DNA of an individual. Radiations tend to damage the DNA and can lead to cell death by causing diseases like cancer.

Radiation can be induced in a body by either an external source or via radioisotopes . The effect of radiation differs with the type of source. Radiation causes alterations in chemical bonds of atoms. These radiations releases large amount of energy which is sufficient to break certain chemical bonds. If a person's body is exposed to low levels of radiation, the body tends to deal with it. But high levels of radiation tends to have a diverse range of damaging effects on body.

On the other hand, enzymes are catalytic bodies which are responsible for effecting a variety of biological functions. If certain enzymes are removed from a person's body certain functions will be hampered. For example- in the process of digestion a variety of enzymes are involved and absence of these enzymes would diversely effect the digestive process leading to certain problems. Also absence of enzymes would affect the metabolic processes and in a way would hamper the basic machinery required for survival.