What is dental plaque composed of in humans?
I. Bacterial cells
II. Food particles
Show answer & explanation
Correct answer: C
Explanation
Correct Answer:
Option 3: Both I and II
Explanation:
Dental plaque is a sticky layer that forms on the teeth, composed of a mixture of bacterial cells and food particles. After eating, saliva and food residues accumulate on the teeth, where bacteria multiply rapidly. These bacteria convert sugars into acids, which damages the tooth enamel. If left uncleaned, this hardens into tartar and leads to gum disease.
Additional Facts:
Option 1: Only I is incomplete.
Option 2: Only II is incomplete.
Option 3: Correct answer.
Option 4: Incorrect.
Potential Questions for Upcoming Exams:
Question: What is tooth enamel?
Answer: The outer layer
Question: What is the method for removing plaque?
Answer: Brushing
Question: What are bacteria?
Answer: Microorganisms
Question: Why is dental hygiene important?
Answer: To prevent disease