4) In an experiment to study the effect of amylase on starch, samples of substrate and enzyme solutions are taken. The
volumes of substrate and enzyme solutions in each sample are the same. The temperature at which the experiment is
performed is also constant. The buffer solutions used for the experiment have pH 3, pH 5, pH 7, pH 9, and pH 11.
What can be BEST predicted about the result?

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.