alleryपराबैंगनी सूर्य के प्रकाश के संपर्क में आने पर त्वचा की कोशिकाओं में किस विटामिन का संश्लेषण होता है?
Aविटामिन D
Bविटामिन A
Cविटामिन E
Dविटामिन C
Answer & Solution
Correct answer: A. विटामिन D
सूर्य के प्रकाश में मौजूद पराबैंगनी B (UVB) किरणें त्वचा की बाह्य परतों में विटामिन D के प्रकाश-रासायनिक संश्लेषण को प्रेरित करती हैं।
Keep practising General Science and Life Science
Browse all General Science and Life Science questions for RRB NTPC, or explore more Science topics.
Related questions
Which kinematic quantity remains constant for a body undergoing uniform circular motion alWhen a physical body moves in uniform circular motion, the acting centripetal force altersWhat dynamic physical quantity was referred to by Sir Isaac Newton using the Latin term moNewton's Third Law is directly related to the conservation of what quantity?In Newton's Third Law, the paired action and reaction forces always act uponNewton's Third Law states that every action force has an equal and oppositeIn classical mechanics, linear momentum is defined as the product of mass andAccording to Newton's Second Law, the rate of change of momentum of a body is proportional