NEET MDS Quiz - Practice Test

1

Biochemistry

An alpha helix of a protein is most likely to be disrupted if a missense mutation introduces the following armino acid within the alpha helical structure:

1. Alanine.
2. Aspartic acid.
3. Tyrosine.
4. Glycine.

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Glycine and proline introduce a bend in structure of protein, hence alpha helix disrupted

2

Biochemistry

All of the following statements are true for the acetylcholinesterase receptor EXCEPT that it
1). opens an ion channel.
2). binds to succinylcholine.
3). undergoes irreversible conformational changes when exposed to carbamates
4). is inactivated in myasthenia gravis

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Acetylcholinesterase receptor opens an ion channel, undergoes irreversible conformational changes when exposed to carbamates , it is inactivated in myasthenia gravis

3

Biochemistry

The essential. sulphur containing amino acid is: 1. Methionine 2. Cystetne 3. Cystine 4. Valine

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Methionine is sulphur containing AminoAcid

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