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Cyanobacteria carry out photosynthesis using two photosystems as in green plants. Furthermore, other photosynthetic bacteria, like as the purple photosynthetic bacterium Rhodospirillum rubrum which have only a one photosystem reaction center. This can hold out cyclic electron transport, producing a proton gradient and thus synthesizing ATP (cyclic photophosphorylation). In other words, a noncyclic pattern of electron transport can be carried out in that the electrons from the cytochromes pass to NAD+ (rather than NADP as in green plants) to create NADH. The electron donor is, for instance, hydrogen sulfide (H2S) that produces sulfur (S). The Hydrogen gas (H2) and a various of organic compounds can also be used as electron donors by particular photosynthetic bacteria. Because H2O is not used as electron donor, no oxygen is formed.
How is carbon dioxide released by cellular respiration transported from the tissues to be eliminated through the lungs? In vertebrates almost 70% of the carbon dioxide is trans
The protein collagen has a high proportion (20% or more) of A. asparagine and glutamine B. proline and hydroxyproline C. glycine D. both A and B E. both A and C F
Proteins of Plant Origin - Seed Proteins Seed Proteins: Although a large number of plants produce seeds having protein contents in excess of 15%, only a few are utilized for fo
Explain Precautions for Determination of Fungal and Yeast Count? 1. Maintain aseptic conditions. 2. Keep alcohol away from flame. 3. To avoid infections and allergies, ca
BLOOD COAGULATION - DEFINITIO N - The property of blood to change from fluid to gel state within a few minutes of its coming in contact with air is called blood coag
Define Can we improve the nutritive value of protein? Yes, as discussed above, the nutritive value of a protein can be improved in two ways: (1) by mutual supplementation, that
Stentless Devices : A bioprosthesis mounted on a stent reduces the effective orifice area (EOA). The newer version (third generation) stentless gluteraldehyde preserved porcine v
What are the three main types of nitrogen wastes excreted by living beings? The major nitrogen wastes excreted by living beings are ammonia, uric acid and urea. Living beings t
Define Carbohydrates needs in Postoperative Nutritional Care? Carbohydrates ensure the use of protein for tissue synthesis and energy required for increased metabolic demands.
How does the presence of exoskeleton explain the general small size of arthropods? As they have exoskeleton and periodic ecdysis, the growth of arthropods is limited to avoid t
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