Question:
The physiologically active form of vitamin D in the body is:
The physiologically active form of vitamin D in the body is:
Show Hint
Active vitamin D: 1α,25(OH)D3 (calcitriol).
25-OH-D3: circulating form.
Regulates calcium metabolism.
25-OH-D3: circulating form.
Regulates calcium metabolism.
Updated On: Aug 18, 2026
- 25-OH-D3
- 1α,25(OH)D3
- 24,25-(OH)D3
- 25,26-(OH)D3
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Vitamin D is converted to active forms in the body.
The most active form is specific.
Step 2: Key Formula or Approach:
No specific formula.
Need to know vitamin D metabolism.
Step 3: Detailed Explanation:
The physiologically active form of vitamin D is 1α,25-dihydroxyvitamin D3 (calcitriol).
It is formed by hydroxylation in the liver and kidney.
25-OH-D3 is the circulating form.
24,25-(OH)D3 and 25,26-(OH)D3 are inactive forms.
Thus, 1α,25(OH)D3 is the active form.
Step 4: Final Answer:
1α,25(OH)D3 is the physiologically active form of vitamin D.
Hence, the correct option is (B).
Vitamin D is converted to active forms in the body.
The most active form is specific.
Step 2: Key Formula or Approach:
No specific formula.
Need to know vitamin D metabolism.
Step 3: Detailed Explanation:
The physiologically active form of vitamin D is 1α,25-dihydroxyvitamin D3 (calcitriol).
It is formed by hydroxylation in the liver and kidney.
25-OH-D3 is the circulating form.
24,25-(OH)D3 and 25,26-(OH)D3 are inactive forms.
Thus, 1α,25(OH)D3 is the active form.
Step 4: Final Answer:
1α,25(OH)D3 is the physiologically active form of vitamin D.
Hence, the correct option is (B).
Was this answer helpful?
0
0
Top ICAR AIEEA Animal Science Questions
- Which of the following antiviral drug is available for treatment of lumpy skin disease in cow?
- How do you arrange the correct sequence of the following procedural steps for early pregnancy diagnosis in cow?
(A) Do the insemination in adult dairy cows.
(B) Administer a small dose (2.5 mg or 0.5 ml) of Dinoprost (Lutalyse) intravenously through the ear vein.
(C) Observe critically the teat of the animal for alveolar milk to start flowing about one minute later.
(D) After 18 to 22 days and 3 hours prior to the evening milking, place the teat cannula in the left fore-teat and leave it for milk flow from the teat cistern till it ceases.
Choose the correct answer from the options given below which describe the correct sequential steps for early pregnancy diagnosis in cow. - Match List-I with List-II.Choose the correct answer from the options given below.
List-I (Toxic Element) List-II (Effect of toxicity on Animal) (A) Fluoride (I) Abdominal pain and diarrhea can be common clinical signs in animals exposed. (B) Arsenic (II) Short-term exposure may include nausea, vomiting, diarrhea, increase in blood pressure or heart rate, skin rashes and eye irritation. (C) Lead (III) Cattle can show clinical signs of depression, weakness and ataxia with postmortem findings of gastroenteritis and degenerative changes in the renal tubular epithelium. (D) Mercury (IV) Abdominal pain or colic, vomiting, a staggering gait and weakness, incoordination, rapid weak pulse and shock, diarrhea, followed by collapse and death. - Polygene term was given by one of the following?
- According to Hardy Weinberg Law, genotype frequencies in the progeny depend only on the
View More Questions
Top ICAR AIEEA Dairy Engineering Questions
- 1st buffalo calf through artificial insemination in India was born at
- Blood testes barrier formed by
- In normal condition, duration of cardiac cycle is
- Left atrium receives blood from
- How much time should be allowed to keep a dairy cow and buffalo in a standing posture immediately after milking?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions