In an experiment, a scientist notices that an enzyme’s catalytic rate decreases when the ph of the environment is changed. which of the following best summarizes the effect of ph on the enzyme? a.) ph changes the shape of the enzyme. b.) ph changes the atomic structure of the enzyme. c.) ph changes the ability of the enzyme to dissolve in water. d.) ph takes energy away from the enzyme, thus slowing it down.

Ocean waves move up and down in circles, but transmit horizontally toward the shore.

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.