Oxidative stress is actually a disproportion between the reactive oxygen species (ROS) and the natural anti-oxidant capability of the system. By the antioxidant activity, the body is able to get rid of the harmful substances and hence, neutralizes the damage they have caused.
When the cells undergo some disturbance, they tend to produce peroxides and free radicals that result in damaging the biomolecules i.e., lipids, proteins and DNA. These chemical species cause breaks in the strands of DNA and damages the nitrogenous bases.
The reactive oxygen species are known to be the harmful products which are formed by the mitochondria under the aerobic metabolic process and are involved in causing a number of diseases. But now, it has been reported that they play a significant role in regulating cell signaling as well as homeostasis.
The oxidative stress disrupts the normal cell functioning and is involved in a large number of diseases such as hypertension, diabetes mellitus, cancers, atherosclerosis etc.
Meiotic nondisjunction is much more likely than mitotic nondisjunction. Based on
A woman who is heterozygous, Bb, has brown eyes;
Explain why familial breast cancer shows a dominant pattern of inheritance in
How is an F′ factor different from an F factor?
With regard to the timing of conjugation, explain why the recipient
The raw material for evolution is random mutation. Discuss whether or
Why is an antibody used in this experiment? From
Explain the type of speciation (allopatric, parapatric, or sympatric
In fruit flies, curved wings are recessive to straight wings,
A recessive allele in mice results in an unusally long neck.
