The actual answer (sorry for the late reply, but this is for the rest of the people coming afterwards) would actually be B) Switch primitive reptile with primitive insect. Insects came before any reptiles.
Answer:
Option (D)
Explanation:
In terms of chemistry, a catalyst is usually defined as the substance that is commonly used in a reaction in order to increase the rate of reaction, without getting consumed. It helps in the reduction of activation energy.
In the given case, the lever or a person can be considered as a catalyst because both of these will increase the efficiency (or rate) in removing the rock from the top of the perch. Thus, the lever or the human will remain the same after the removal of rock as a catalyst can be recovered after the reaction.
Therefore, the correct answer is option (D).
The plant cell is able to withstand the expansion of the central vacuole as the result of the rigid cell wall which it possess. The plant cell wall provide a rigid structure which support the activities of the cell.
<span>it is false.</span> it can't because it a guest so no.
Phosphates and kinases work together so I’d phosphateses are reduced in function, their function in Signal transduction pathways would be reduced.
