Alzheimer disease, charactersised by less memory is due to

Options

A. low acetyl choline
B. high acetyl choline
C. low dopamine
D. high dopamine

Answer

**Step-by-Step Solution:**

1. **Understanding Alzheimer's Disease**: Alzheimer's disease is a neurodegenerative disorder characterized primarily by memory loss and cognitive decline. It often progresses to affect motor functions as well.

2. **Role of Neurotransmitters**: Neurotransmitters are chemicals that transmit signals in the brain. Two important neurotransmitters mentioned in the context of Alzheimer's are acetylcholine and dopamine.

3. **Acetylcholine and Memory**: Acetylcholine is crucial for memory processing and cognitive functions. A deficiency in acetylcholine levels can disrupt these processes, leading to memory loss.

4. **Evaluating the Options**:
- **Option 1: Lower Acetylcholine**: This option suggests that a decrease in acetylcholine is responsible for Alzheimer's disease, which aligns with current understanding.
- **Option 2: High Acetylcholine**: An increase in acetylcholine is not associated with memory loss; hence, this option is incorrect.
- **Option 3: Dopamine**: Dopamine primarily regulates movement and does not directly relate to memory processing in the context of Alzheimer's.
- **Option 4: High Dopamine**: Similar to low dopamine, high levels do not correlate with memory loss or Alzheimer's disease.

5. **Conclusion**: Based on the analysis, the correct answer is that Alzheimer's disease is characterized by lower levels of acetylcholine, leading to memory loss.

**Final Answer**: Alzheimer's disease, characterized by less memory, is due to lower acetylcholine.

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