BIOLOGY
ENZYMES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Raw liver produced the most oxygen bubbles, followed by raw potato. The catalase enzyme was fully functional and allowed the reaction to occur quickly.
|
|
|
Plant cells produce more oxygen bubbles than animal cells because plant cells contain more protein, and therefore, more enzymes.
|
|
|
Boiled potato and cooked liver produced the most oxygen bubbles. The catalase enzyme was denatured and allowed the reaction to occur quickly.
|
|
|
Cooking the foods seems to increase the activity of the catalase enzyme because it speeds up the rate at which the enzyme is able to function.
|
Detailed explanation-1: -When hydrogen peroxide comes in contact with the cut, it reacts with the catalase enzyme in the damaged cells to produce oxygen foam. When the catalase reaction is conducted in a test-tube, the oxygen gas bubbles. The height of the foam is an indication of the amount of catalase activity present.
Detailed explanation-2: -Fresh potato shows an interesting chemical activity. When dipped in a solution of hydrogen peroxide, it triggers bubbling of oxygen. This activity is due to a special protein produced by the potato to protect itself against oxidative stress.
Detailed explanation-3: -Catalase breaks down two hydrogen peroxide molecules into one molecule of oxygen [9] and two molecules of water in a two-step reaction [10].
Detailed explanation-4: -This enzyme detoxifies hydrogen peroxide by breaking it down into water and oxygen gas. The bubbles resulting from production of oxygen gas clearly indicate a catalase positive result.