In a biological reaction involving an enzyme, the active site of an enzyme binds

a. the active site of another enzyme.

b. the substrate.

c. the inactive site of another enzyme.

d. the catalyst.

The answer is B, ( The Substrate )!! I had the same question.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg