A pepsina é uma enzima digestiva cuja velocidade de reação é influenciada tanto pelo pH quanto pela temperatura do meio. Fixada a temperatura, a velocidade de reação varia com o pH como mostrado no gráfico a seguir. a) Planejou-se um experimento para verificar qual a temperatura que determina a velocidade máxima da reação. Cinco tubos de ensaio contendo pepsina e um substrato adequado são colocados em diferentes temperaturas. Complete a tabela I, indicando o valor do pH que deve ser usado em cada um dos tubos.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

(me out over the last several centuries, scientists have made the following broad observations while investigating several branches of the life sciences: -the fossil record shows that different types of organisms have existed at different times in earth's history. -many organisms have similar body structures that seem to be adapted to different ways of living in their environment. -organisms of different species often share similarities in stages of embryonic development. -many species share genetic similarities, and almost all organisms use the same basic building blocks to construct proteins. -often, the extent of two species' similarities can be predicted from their geographic closeness to each other. -a great deal of change has been observed among species that have experienced strong selective pressures through many generations. scientists have carefully considered and rigorously tested the observations listed above. when scientists offer a of these observations, they are making 1.) testable explanation, deductive explanation 2.) scientific interference, scientific law