Biology EOC Review Packet Essay

The temperature can have a major impact on an enzyme. According to Campbell Biology author Reece etc. 2011 “The enzyme reaction will increase as the temperature increase with the increasing temperature….substrates collide with active sites more frequently when the molecules move rapidly.”(Reece etc 2011) Every enzyme hits its optimal temperature the reaction will be at its highest point.(Reece etc. 2011) When the

1. For this experiment, what were the independent variable and the dependent variable? What were the constants?

37. What happens if you don’t have enough The body’s calcium needs will come out of the

These results show how temperature of extreme high, or low affects enzyme activity. The highest rate of enzyme activity occurred at 37 Cº. Anything that was hotter or cold than 37 Cº slowed the reaction rate. As I thought, 100 degrees would denature the enzyme, and that was the case. The data provided shows exactly what temperatures enzymes work best, and worst. The objective was achieved as we discovered the different reaction rates under different temperatures. The results are reliable, as we know enzymes do not work well when under extreme heat or denaturation occurs. What I learned in this experiment was that enzymes don’t work well under cold temperatures because they tend to move slower. My hypothesis did not quite match, because I thought they work best at lower temperatures.

1. The pulmonary circuit is supplied by which ‘side” of the heart? The systemic circuit? The right atrium

Independent: The independent variable in the following experiment is the temperature as it is what is being changed and will impact the overall outcome of the experiment.

13. Which of the following is not an expected response in a fish to a drop in water temperature?

Hydrogen bonds contribute to a property of water called cohesion or the tendency of water molecules to stick together.

Enzymes will denature if they get too hot or cold or if the pH of the solution they are in is too high or too

6) This is an experiment because it is in a controlled environment where the variables and the situation are manipulated. The dependant variable is the preference of the participants. The

This factor was the independent variable; it was controlled by you, the experimenter. The other variable was a consequence of changes you made. This is the dependent variable. It was a consequence of changes in the independent variable.

20. The stimulus, or that which is effecting what you are studying: in an experiment this statement describes the variable of the

The enzyme most likely has a mutation which causes its structure to not be that stable hence the heat-inactivation. The enzyme must have a polypeptide chain that is denatured from a temperature increase collectively but when the temperature is decreased they most of the time do not refold

a. The study was designed as an experimental research by using independent and dependent variables.

Thermoregulation is important, especially in humans, as temperatures above 40 degrees Celsius cause enzymes to denature rapidly. Enzymes have an optimal range for catalysing reactions. Temperatures below this cause for the rate at which reactions occur to decrease, whereas temperatures above this can lead to the denaturing of enzymes and important metabolic reactions unable to occur. Therefore it is essential for enzymes in the body to be functioning.