There is a population of beetles that typically have black wings. A scientist studying these beetles knows that their eggs hatch
in early spring, the baby insects grow through the late spring and summer, they lay eggs in the early fall, and die in the early winter. Recently some beetles have been born with white wings. Early in life the black and white winged beetles seem to be very similar in number of mating events, eggs laid, and survival rates, but shortly after laying their eggs the white beetles die and there are only black winged beetles during the late fall. Which of the following is a true statement about the beetles? A. White- and black-winged beetles have equal fitness.B. Black-winged beetles have a higher fitness than white-winged beetles.C. The number of baby white-winged beetles will decrease in frequency over time.
D. White wings are an adaptation.E. Adaptive directional selection is occurring.
The shape of the enzyme determines which chemical reaction it will speed up.May strain the bonds of the substrate or put chemical groups of the active site in the correct position to speed up the reaction.
Total 18 ATP are produced because 9 FADH2 are converted into 9 ATP molecules and the earlier 9 ATP molecules are already present in the first b-oxidation process. The first Krebs cycle produces 27 NADH, 9 FADH2 and 9 ATP while on the other hand, the second Krebs cycle produces 9 ATP molecules from 9 FADH2 so total it produces 18 ATP molecules.
