A keyboard is also used to give commands to the operating system of a computer, such as Windows ' Control-Alt-Delete combination, which brings up a task window or shuts down the machine. A command-line interface is a type of user interface operated entirely through a keyboard, or another device doing the job of one.
How Temperature Affects Enzymes. Higher temperatures tend to speed up the effect of enzyme activity, while lower temperatures decrease the rate of an enzyme reaction. At higher temperatures, more molecules collide, increasing the chance that an enzyme will collide with its substrate.
Investigate the effect of temperature on dehydrogenase activity in yeast. 4 star(s). I will be aiming to find out the rate of the reaction and see the changes in temperature over time using this information. Hypothesis Enzymes are chemicals that increase in activity as the temperature increases.