What is the optimal ph that this enzyme functions at ?

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !

Wich is not standing in the way of astronomers getting a good view of different star

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowing extra gills, for oxygen extraction the ability to grow larger extra fat, for warmth