<h2>Answer:</h2>
Paramecium is the single celled organism (unicellular).
<h3>Explanation:</h3>
- An organism which contain only one cell is known as unicellular organism.
- Paramecium is the unicellular parasite. It can move and digest food.
- In its structure there are food vacuoles for the digestion of food.
- Paramecium is the eukaryotic organism because it has a well organised cell with distinct nuclear membrane.
- It belongs to kingdom protista.
The immune system helps fight off infections and foreign invaders
Answer:
Option 4
Explanation:
Please see the attachment
C) voltage gated sodium channels
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