Shell Fish taken from water during a red tide would be

Options

A. poisoned with neurotoxin
B. rich in proteins
C. dead
D. rich in minerals.

Answer

**Step-by-Step Solution:**

1. **Understanding Red Tide**: Red tide refers to a phenomenon where ocean water becomes discolored, often appearing red or brown, due to the excessive growth of certain types of algae, particularly dinoflagellates.

2. **Identifying Dinoflagellates**: Dinoflagellates are a group of single-celled organisms that can photosynthesize and are known to bloom in large numbers under certain conditions, leading to red tides.

3. **Effects on Shellfish**: During a red tide, the dinoflagellates produce toxins, specifically a type of neurotoxin known as brevotoxin. These toxins can accumulate in shellfish, such as mollusks, that filter feed on these algae.

4. **Impact of Brevotoxins**: Brevotoxins are harmful substances that can damage nerve cells in humans and other animals. When shellfish contaminated with these toxins are consumed, they can lead to poisoning.

5. **Conclusion**: Therefore, shellfish taken from water during a red tide would be poisoned with neurotoxin due to the accumulation of brevotoxins produced by the dinoflagellates.

**Final Answer**: Shellfish taken from water during a red tide would be poisoned with neurotoxin.

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