Question:
Thiamine is
Thiamine is
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Important B-complex vitamins:
\[
B_1=\text{Thiamine}
\]
\[
B_2=\text{Riboflavin}
\]
\[
B_3=\text{Niacin}
\]
\[
B_{12}=\text{Cyanocobalamin}
\]
Deficiency of thiamine causes beriberi.
Updated On: Jul 18, 2026
- Nitrogenous base
- Amino acid
- Hormone
- Vitamin
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The Correct Option is D
Solution and Explanation
Step 1: Identify thiamine.
Thiamine is a water-soluble vitamin belonging to the Vitamin B-complex group. It is commonly known as \[ \text{Vitamin } B_1 \]
Step 2: Recall its biological role.
Thiamine acts as a coenzyme in carbohydrate metabolism and plays an important role in the proper functioning of the nervous system.
Its active form is thiamine pyrophosphate (TPP), which participates in several biochemical reactions.
Step 3: Examine the other options.
Nitrogenous bases are components of nucleic acids such as adenine, guanine, cytosine, thymine and uracil. Thiamine is not a nitrogenous base.
Amino acids are the building blocks of proteins and contain both amino and carboxyl groups. Thiamine is not an amino acid.
Hormones are chemical messengers produced by endocrine glands. Thiamine is not a hormone.
Step 4: State the correct classification.
Since thiamine is Vitamin \(B_1\), it belongs to the vitamin category.
Step 5: Final conclusion.
Therefore, \[ \boxed{\text{Vitamin}} \] Hence, option (4) is correct.
Thiamine is a water-soluble vitamin belonging to the Vitamin B-complex group. It is commonly known as \[ \text{Vitamin } B_1 \]
Step 2: Recall its biological role.
Thiamine acts as a coenzyme in carbohydrate metabolism and plays an important role in the proper functioning of the nervous system.
Its active form is thiamine pyrophosphate (TPP), which participates in several biochemical reactions.
Step 3: Examine the other options.
Nitrogenous bases are components of nucleic acids such as adenine, guanine, cytosine, thymine and uracil. Thiamine is not a nitrogenous base.
Amino acids are the building blocks of proteins and contain both amino and carboxyl groups. Thiamine is not an amino acid.
Hormones are chemical messengers produced by endocrine glands. Thiamine is not a hormone.
Step 4: State the correct classification.
Since thiamine is Vitamin \(B_1\), it belongs to the vitamin category.
Step 5: Final conclusion.
Therefore, \[ \boxed{\text{Vitamin}} \] Hence, option (4) is correct.
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