Vitamins - Mock Test 21

Question 201

Provitamin D3 is?

A) Cholecalciferol B) Ergosterol C) 7-Dehydrocholesterol D) Ergocaliferol

---

No Details

Question 202

Transducin is a?

A) Signal transducer B) Stimulatory G-protein C) Trimer D) All of these

---

No Details

Question 203

Retinoic acid is involved in the synthesis of?

A) Rhodopsin B) Iodopsin C) Porphyrinopsin D) Glycoproteins

---

No Details

Question 204

Prosthetic group in cone cell phototreceptors is?

A) Iodine B) Opsin C) 11-cis-retinal D) all-trans-retinal

---

No Details

Question 205

Retinoic acid can?

A) Act as a photo receptor B) Support growth and differentiation C) Act as an anti-oxidant D) None of these

---

No Details

Question 206

Provitamins A include?

A) Retinal B) Retionic acid C) Carotenes D) All of these

---

No Details

Question 207

Rod cells possess a trans-membrane protein which is?

A) Adenylate cyclase B) Transducin C) Rhodopsin D) B as well as C

---

No Details

Question 208

Nyctalopia is?

A) Drying of eyes B) Destruction of cornea C) Blindness D) Inability to see in dimlight

---

No Details

Question 209

An early effect of vitamin a deficiency is?

A) Xerophthalmia B) Keratomalacia C) Prolonged dark adaptation time D) Follicular hyperkeratosis

---

No Details

Question 210

Vitamin B6 includes?

A) Pyridoxal B) Pyridoxamine C) Pyridoxine D) All of these

---

No Details