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In sulfur photosynthetic bacteria what is the molecule that donates hydrogen for photosynthesis?
In sulfur photosynthetic bacteria the substance that donates hydrogen is hydrogen sulfide (H2S) and not water. Thus there is no liberation of molecular oxygen but there is production of molecular sulfur (S2). (Oxygen and sulfur have similar number of valence electrons.)
The vertebral bodies are much larger in the lower back than the neck. What is the functional significance of this structural difference?
The Physical Environment The actual hospital environment is another factor that may be stressful for the child and family. There are many unfamiliar sights, sounds and smells
Define Hormonal Responses to Injury? A number of hormonal changes take place in patients following injury. There is a marked rise in the counter regulatory hormones, viz., glu
The pancreas performs digestive and hormonal functions. The enzymes secreted by the exocrine tissue in the pancreas help in the break down of carbohydrates, fats, proteins, and
Acellular and Cellular Organisms you should be able to characterise living and non- living matter. However, the boundary-line between the two is not very precise. As you have
Embryo-sac : Embryo-sac is formed from megaspore mother cell. In embro-sac, there are 7 cells arranged in 3 groups. The 7 cells are one egg (female gamete), 2 synergids,
CHITIN It is polymer of N-acetyl-D-glucosamine. It is a structural homopolysaccharide found in the fungal walls as fungus cellulose and as chitin in the exoskeleton of
(a) What are the immediate effects of exercise on the functions of (i) the heart, (ii) the lungs, (iii) the liver? (b) How do these changes help to meet the needs of exercise
What are protein hydrolysates? Proteins that have been treated with enzymes to break them down into amino acids or shorter peptides are referred to as protein hydrolysates. Pr
Q. What are the lateral lines of fishes? The lateral lines of bony fishes are sense organs that extend along both sides of the animal body they make contact with the environmen
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