31. The graph below shows the effect of tempera- ture on the relative rate of action of enzyme X
on a protein
Relative rate
of action
10 20 30 40 50 60 70 80
Temperature (*)
Which change would not affect the relative
rate of action of enzyme X?
(1) the addition of cold water when the
reaction is at 50°C
(2) an increase in temperature from 70°C to 80°C
(3) the removal of the protein when the
reaction is at 30°C
(4) a decrease in temperature from 40°C to 10°C

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?

Diagram of the evolution of land plants?