解釋：酵素在低溫時並不活躍，隨著溫度上升，開始變得活躍動能提高，70度最適合溫度，70度-80度酵素在高溫時活性下降，開始變性，80度-90度完全變性

Describe:

-The Amylase activity is increasing from 0-70

-The Amylase activity starts decreasing from 70-80

-There is no activity in 90

Explain:

-When the temperature is 0,the enzyme inactive,

-when the temperature rises, the kinetic energy increase ,the amylase activity increases,

-when the temperature reached 70,the kinetic energy become maximum,the enzyme reached a maximum activity,it is at its optimum temperature.

-When the temperature over 80,the activity decreases,after that,the amylase is denatured at 90

The rate increase initially.

The rate is highest at 70 °,then decrease.

The rate decrease more rapidly then increase.

The rate decrease to 0 at 90 °.

Explain:

At lower temperature, amylase are inactive as the kinetic energy of enzyme and substrate is low.

When temperature increase , they have more kinetic energy to coiling with each other,increases the chance of formed enzyme substrate complexes.

At highest temperature ,the amylase denatured ,it causes the active site no longer fit the substrate.

The amylase activity rises steadily at 0-60,and rises rapidly until it reaches it’s peak at 70,and finally drops down at 80.

Explain:

The temperature effects the rate of activity of amylase,and 60-70 is at the peak, after it goes beyond the optimum temperature, high heat breaks the hydrogen bonds inside the enzyme molecule.so once it reaches 80 the enzyme becomes denatured and permanently unusable.

From 0°C to 70°C, the line of the graph increases gradually. (1)

At 70°C, it reaches it’s highest point

From 70°C to 90°C , the line drops rapidly. (1)

Explanation :

As the temperature increases, the amylase activity increases with it. Because as the temperature increases, there will be more kinetic energy and move faster.(1)

At 70°C, it reaches it’s optimum temperature, it’s activity is at it’s maximum. Because it has more kinetic energy, the enzyme will move faster, the chances of forming an enzyme-substrate complex increases.(1)

From 70°C-90°C, the activity decreases rapidly, since the extreme higher temperature cause comformational change to its active site. The substrate won’t be able to fit into the active site. Making the enzyme permanently denatured , losing it’s catalytic ability. (1)

The activity reaches its maximum (optimum) at around 70°C.

Beyond 70°C to 90°C, the enzyme activity decreases sharply.

Explain:From 0°C to around 60°C, the amylase activity increases gradually.

The activity reaches its maximum (optimum) at around 70°C.

Beyond 70°C to 90°C, the enzyme activity decreases sharply.

At low temperature, enzymes and substrates have less kinetic energy, so fewer effective collisions occur between enzyme and substrate and lower reaction rate.At the optimum temperature ,kinetic energy is ideal for the maximum number of successful collisions, giving highest enzyme activity.

When the temperature is too high ,the enzyme is denatured - its active site changes shape, so the substrate can no longer bind and activity decreases.

When the temperature increase then the amylase activity increase when 80 °C then the amylase activity is at 9 and it is highest. When the temperature is 90 it remain 0.

Explain :

Temperature at 0 °C, amylase activity is 0.When temperature is the optimum temperature that have most kinetic energy and the number of amylase activity is 9 it have more reactive.Finally the higher temperature decrease and the amylase become denatured.

解釋:在低溫時，酶的活性不活躍，當溫度變高時，酶的活動變高是因為酶和受質的撞擊更頻密，當70度，酶的活性最高，是因為這個溫度是酶的最適溫度， 80至90度時，酶的活性漸漸下降，是因為每會變成，喪失催化功能，因此酶的活性下降

由40°C到70°C，酵素活性上升更快，並在 70°C 達到最高值，即達到最適溫度。（1）由 70°C到 90°C，酵素活性急劇下降。（1）

解釋：隨着溫度上升，酵素與底物分子獲得更多動能，移動更快，碰撞次數增多，形成酵素一底物複合物的機會提高，因此反應速率上升。（1）

當達到最適溫度時，酵素的催化活性最高。（1）

當溫度過高（例如 70°C以上），過多的熱能會破壞酵素分子的三維結構，活性位變形，底物無法再與之配合，酵素被變性並失去催化能力。（1）