Tag: food and it's constituents

Questions Related to food and it's constituents

What is the $R.Q.$ of glucose?

biology biological molecules energy giving food carbohydrate and its test food and it's constituents

  1. One

  2. Less than one

  3. More than one

  4. Infinite

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Correct Option: A

The post prandial glucose can be measured 

biology biological molecules energy giving food carbohydrate and its test food and it's constituents

  1. Empty stomach

  2. Any time

  3. 2 hours after lunch / dinner

  4. Early in the morning

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Correct Option: C
Explanation:

Blood glucose levels are maintained by hormones, such as insulin and glucagon. A postprandial glucose test is a blood glucose test that determines the amount of glucose in the blood after a meal. Normally, blood glucose levels increase slightly after eating. This increase causes the pancreas to release insulin. A postprandial blood glucose test measures blood glucose exactly 2 hours after eating a meal. By this point, blood sugar has usually gone back down in healthy people, but it may still be elevated in people with diabetes.

For the test of sugars _______ is used.

biology biological molecules energy giving food carbohydrate and its test food and it's constituents

  1. Fehling's solution

  2. Benedict's solution

  3. Iodine solution

  4. All of the above

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Correct Option: D
Explanation:

A little glucose is added to a blue green chemical called as Fehling's solution in a test tube for test of glucose.

Benedict's solution can be used for detecting reducing sugars.
Iodine solution also called as Lugol's reagent is used for detection starch and complex sugars. So, the correct answer is option D. 

Which of the following gives Fehling's test? 

biology biological molecules energy giving food carbohydrate and its test food and it's constituents

  1. Pectin

  2. Sucrose

  3. Cellulose

  4. Glucose

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Correct Option: D
Explanation:

Fehling's test is given by glucose, which is a reducing sugar. It produces a red precipitate with Fehling's solution A and B, when heated.

How many NADH molecules are produced during the complete breakdown of one molecules of glucose?

biology biological molecules energy giving food carbohydrate and its test food and it's constituents

  1. 5

  2. 10

  3. 30

  4. 6

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Correct Option: A

Fehlings solution is used to detect 

biology biological molecules energy giving food carbohydrate and its test food and it's constituents

  1. Sucrose

  2. Glucose

  3. Fat

  4. Starch

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Correct Option: B
Explanation:

Fehlings can be used to screen for glucose in urine, thus detecting diabetes. 

So, the correct answer is option B.