Question

Which of the following statements about heavy metals and DNA are correct?

1. Heavy metals can induce DNA damage.
2. Heavy metals can cause chromosome aberrations.
3. Heavy metals enhance DNA replication and transcription.
4. Heavy metals have no effect on genetic material.

• A. 1, 2
• B. 1 only
• C. All
• D. 1, 4

Answer 1

Answer:

A. 1, 2

• Mercury exposure can result in various health problems, including Alzheimer's disease, lung damage, and skin issues such as the common ailment. Acrodynia is a common skin ailment in which skin colour becomes pink.

• Cadmium is a highly toxic metal that causes bone damage and acute exposure can lead to renal dysfunction, while prolonged exposure to high levels of Cd can result in lung damage.

• Heavy metals can also induce DNA damage, cause chromosome aberrations, and alter DNA replication and transcription.

• Exposure to Chromium over a long period can result in the formation of ulcer.