Question: Who proposed the double helix structure of DNA in 1953? 1953 में डीएनए (DNA) की द्विकुंडलीकृत (double helix) संरचना […]

Question: Which endocrine gland is referred to as the ‘master gland’ because it controls the secretions of many other endocrine

Question: The enzyme salivary amylase (ptyalin) in human saliva initiates the digestion of which of the following nutrients? मानव लार

Question: Malaria is caused by a protozoan parasite called ______ and is transmitted to humans by the bite of a

Question: Which part of the human brain is primarily responsible for maintaining posture, balance, and muscle coordination? मानव मस्तिष्क का

Question: Which plant tissue is responsible for the transport of water and mineral salts from the roots to the leaves?

Question: Accumulation of which acid in the muscles due to anaerobic respiration leads to muscle cramps and fatigue? अवायवीय श्वसन

Question: Each molecule of hemoglobin can carry a maximum of how many molecules of oxygen? हीमोग्लोबिन का प्रत्येक अणु ऑक्सीजन

Question: Which cell organelle is known as the ‘suicide bag’ of the cell due to the presence of hydrolytic enzymes?

Question: Which metal ion is present at the center of the chlorophyll molecule? क्लोरोफिल अणु के केंद्र में कौन सा