Give scientific reasons.
a. Oxygen is necessary for complete
oxidation of glucose.
b. Fibers are one of the important
nutrients.
c. Cell division is one of the important
properties of cells and organisms.
d. Sometimes, higher plants and
animals too perform anaerobic
respiration
e. Krebs cycle is also known as citric
acid cycle.
Answers
Answer:
a=Absence of oxygen during glucose breakdown produces pyruvic acid and alcohol. ... Presence of oxygen during aerobic breakdown of glucose produces water and carbon dioxide along with the release of a large amount of energy. Hence, oxygen is necessary for the complete oxidation of glucose.
b=Fibers are one of the crucial nutrients which is helpful in the digestion of foods, these fibers are not digested themselves. It is mainly helpful in the egestion of undigested substances because of this reason it is said to take fibre rich food items. ... Roughage comes from the plant products in our food.
c=Cell division is one of the important properties of cells and organisms because: it is the means of asexual reproduction in unicellular organisms. ... it also results from the regeneration of organisms. it forms the basis of evolution to various life forms.
d= When availability of oxygen is limited, higher animals and plants can also show anaerobic respiration. For example, during exercise the availability of oxygen to the muscles is limited, as a result of which they undergo anaerobic respiration and results in the production of lactic acid.
e=Kreb's cycle is also known as Citric acid cycle because it is the first product formed in this cycle and also is regenerated at the end. In this process, Acetyl-CoA obtained during the process of pyuruvate decarboxylation reacts with oxaloacetic acid to form citric acid (six-carbon compound).
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