What Are Carcinogens

question 61

Multiple Choice

What are carcinogens?

• A)Physical or chemical factors that can lead to mutations causing cancer
• B)The only source of mutations in cells
• C)Errors during DNA replication
• D)Chemical factors that can treat cancer

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Definitions:

Presbyopia

A common age-related condition where the eye's lens loses its ability to focus properly, leading to difficulty in reading or seeing objects up close.

Floaters

Visual phenomena where small spots or threads appear to float across one's field of vision, typically due to age-related changes in the eye's vitreous humor.

Vitreous Fibers

Vitreous fibers are small, fibrous materials, often used in insulation, that can be hazardous to the lungs if inhaled.

Snellen Chart

A chart used to measure visual acuity, featuring lines of letters in decreasing size, which the patient reads from a set distance.