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Q. What is the molecule that donates hydrogen for photosynthesis, in sulfur photosynthetic bacteria?
In sulfur photosynthetic bacteria the substance that donates hydrogen is hydrogen sulfide (H2S) not water. Therefore there is no liberation of molecular oxygen but there is production of molecular sulfur (S2) Oxygen and sulfur has same number of valence electrons.
Soil Temperature Soil temperature is known to influence water absorption and ultimately transpiration to a considerable extent. In many plants water absorption is reduced shar
Q. What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food? The salivary hydrolase is known as sali
What are zymogen granules
Determine the blood plasma levels of glucagon A. production in the liver increases in response to an increase in blood plasma levels of glucagon. B. is secreted by alpha-isl
How plants use the pattern of changes in day/night length to solve the paradox that day length is equal twice a year. Plants possess the ability to balance the daily changes in
Define Vigorous or vigorously active lifestyles - physical activity? These people engage regularly in strenuous work or in strenuous leisure activities for several hours. Examp
Tracheae - Respiration Insects that have successfully colonised the terrestrial environment have evolved a respiratory system very different from other land animals - the trac
What do enzymes do to a reaction? Indicate all that are correct. a. Lower the activation energy b. Reverse the equilibrium c. Lower the equilibrium d. Increase the reac
Pattern of Limb Development The first visible sign of limb development is the appearance of ridge or thickening on each lateral side of the embryo of amniotes. The ridge call
Determine the Types of Exercises Exercises are generally grouped into three types: - Flexibility exercises such as stretching improves the range of motion of muscles and jo
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