Organisation: Digestion
1. This question has 4 part(s).
1.1. Figure 5 shows the effect of temperature on the rate of an enzyme-catalysed reaction.
Figure 5
Explain why the rate of an enzyme-catalysed reaction decreases after point B.
1.2. A scientist investigated how the digestive enzyme amylase breaks down starch into the sugar maltose.
He added the enzyme to a solution of starch and measured the concentration of starch every 10 minutes.
The results are shown in Table 2.
Table 2
Time (min) | Concentration of starch ( mg cm -3 ) |
0 | 17.2 |
10 | 11.1 |
20 | 7.2 |
30 | 5.3 |
40 | 4.2 |
Rate of reaction can be calculated using the following equation:
Calculate the average rate of the reaction between 0 and 20 minutes.
1.3. Bile is a secretion that helps with digestion.
Which of the following statements about bile are correct?
Emulsifies fats.
Enzymes in bile help digest food.
Helps to provide the optimum pH.
Is acidic.
1.4. Figure 6 shows the organs of the human digestive system.
Figure 6
Bile is produced by organ X
Name organ X.
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
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