Multiple Choice QuestionsThe main difference between white and yellow fibres is of
protein
colour of fibres
both (a) and (b)
none of the above
Which of the following is not found in vertebrates
Bilateral symmetry
Gill opening
Body scales
Cnidoblasts
In which of the following process 36 ATP molecules are produced by per hexose molecule
Glycolysis
Krebs' cycle
Direct oxidation pathway
None of the above
The value of RQ at compensation point is
unity
infinity
> 1
zero
D.
zero
The (light) compensation point is the light intensity on the light curve where the rate of photosynthesis exactly matches the rate of cellular respiration. At this point, the uptake of CO2 through photosynthetic pathways is equal to the respiratory release of carbon dioxide, and the uptake of O2 by respiration is equal to the photosynthetic release of oxygen.
In assimilation terms, at the compensation point, the net carbon dioxide assimilation is zero. Leaves release CO2 photorespiration and cellular respiration, but CO2 is also converted into carbohydrate by photosynthesis. Assimilation is therefore the difference in the rate of these processes. At a normal partial pressure of CO2, there is irradiation at which the net assimilation of CO2 is zero.
Symbiotic bacteria present in intestine of most primates, which synthesize certain vitamins are
Entamoeba histolytic
Entamoeba coli
Entamoeba gingivali
None of the above
In which form CO2 is mostly carried by blood
bicarbonate
carbonic acid
Carbamino compound
Carboxyhaemoglobin
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