Biology

1. which among the following is provitamin A?

• Retinol

• Retinoic acid

• Reninal

• beta carotene

2. Rhodopsin is made up of

• opsin+all transretinal

• opsin+11-cis retinal

• transducin+all transretinal

• transducin+11-cis retinal

3. The visual pigment Rhodopsin is found in ------- cells of retina

4. Daily requirement of for a normal adult is

• 1ug

• 5 ug

• 100 ug

• 750 ug

5.The sources of vitamin A are all except

• Pappaya

• Orange

• Egg

• cod liver oil

Deficiency of vitamin A leads to

• Night blindness

• Rickets

• Macrocytic anemia

• Microcytic anemia

Identify the deficiency manifestation of vitamin A shown in the picture.

• keratomalacia

• Xeropthamia

• Bitots spot

• Acne

Vitamin A has steroid hormone like action

• True

• False

The most important biological role of vitamin E is

• Anticoagulant

• Antioxidant

• antidote for selenium poisoining

• To produce clotting factors

Sources of vitamin E include all except

• wheat germ oil

• sunflower oil

• cotton seed oil

• fish liver oil