Identify the role that cholesterol plays in a human cell. O forms the nuclear membrane
is used to increase the rate of cellular reactions
O is a precursor for forming DNA
O forms part of the cell's outer membrane

Identify the main component f natural gas

Which type of respiration takes place when there is no oxygen present

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.