What does the appearance and disappearance of many species help define? A. climate changes
B. species extinction rates
C. geological time boundaries
D. species appearance rates

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

Which of the following is the function of the nociceptors? a. detecting odors in the nose b. detecting painful stimuli c. detecting central body temperature d. detecting touch and pressure

Why are lipids and proteins free to move laterally in membranes?