Answer:
1. Petrochemicals are compounds that are produced by plants ("phyto" means "plant"). They are found in fruits, vegetables, grains, beans, and other plants. Some of these petrochemicals are believed to protect cells from damage that could lead to cancer.
2. Antioxidant micronutrients considered in the study
The antioxidant micronutrients considered are vitamins A, C, and E, copper, zinc, and selenium.
Explanation:
A large molecule made up of smaller molecules is called a macromolecule. Macromolecules are also sometimes called polymers.
Answer: c
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Answer:
Breast cancer is the most common noncutaneous malignancy and the second most lethal form of cancer.
Answer: The correct answer is-
an agent that causes a mutation in DNA.
Mutagen is an agent or a substance that causes permanent change in the genetic material of living organisms ( DNA, deoxyribonucleic acid). This process is called mutation.
A mutagen can be a chemical, physical or biological agent that causes mutation in the DNA.
Example- Physical agents such as -
- Ionizing radiations like alpha particles, gamma rays, X-rays that brings break in the DNA and cause other damages.
- Ultraviolet radiations that creates pyrimidine dimers ( T=T) and causes replication errors if damage is not repaired.
