study the image. a graph showing energy taken in and released for two chemical reactions over time. in a reaction with no enzyme, the energy of the reaction rises somewhat to form the activated complex before dropping to form the products. with an enzyme, the peak of the activated complex is significantly lower, though the energy of the products and the reactants remain the same. which answer choice correctly describes the labeled graph? (select all that apply.)

a. the activation energy is much lower with an enzyme present.
b. the activation energy is much higher without an enzyme present.
c. the activation energy is much higher with an enzyme present.
d. the activation energy is much lower without an enzyme present.

Two true-breeding pea plants were crossed. one parent is round, terminal, violet, constricted, while the other expresses the respective contrasting phenotypes of wrinkled, axial, white, full. the four pairs of contrasting traits are controlled by four genes, each located on a separate chromosome. in the f1 only round, axial, violet, and full were expressed. in the f2, all possible combinations of these traits were expressed in ratios consistent with mendelian inheritance. (a) what conclusion about the inheritance of the traits can be drawn based on the f1 results? (b) in the f2 results, which phenotype appeared most frequently? what mathematical expression predicts the probability of occurrence of this phenotype? (c) which f2 phenotype is expected to occur least frequently? what mathematical expression predicts this probability? (d) in the f2 generation, how often is either of the p1 phenotypes likely to occur? express your answer as a fraction (example: 3/16).

Apart of the periodic table is shown. a portion of the sixteenth and seventeenth columns of the periodic table is shown. column 16 reads eight oxygen, 16 sulfur, and 34 selenium. column 17 reads nine flourine, 17 chlorine, and 35 bromine. which of the following elements is less reactive than the others? bromine (br) oxygen (o) selenium (se) sulfur (s)

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?