Tag: constitutes of diet

Questions Related to constitutes of diet

Fat soluble vitamins are

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders

  1. Vitamin A, B and C

  2. Vitamin A, B and D

  3. Vitamin A, D , E and K

  4. Vitamin C and D

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Correct Option: C

Vitamins, we must consume daily are

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals digestive disorders

  1. Fat soluble

  2. Water soluble

  3. (a) and (b) both

  4. None of these

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Correct Option: B

The compound which is added to able salt for maintaining proper health is 

biology constitutes of diet nutrients and foodstuffs simple test for nutrients test for nutrients

  1. KCI

  2. KBr

  3. Nal

  4. $MgBr _{2}$

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Correct Option: C
Explanation:

NaI.

Most table salt also has added iodine, an essential nutrient that helps maintain a healthy thyroid.

A green leaf is partially covered and placed in the light for several days. If it is then boiled and tested for starch with iodine, what will be the result? 

biology constitutes of diet nutrients and foodstuffs simple test for nutrients test for nutrients

  1. Starch will be found only in the part of the leaf exposed to light

  2. Starch will be found in the entire leaf

  3. Starch will be found only in the shaded part of the leaf

  4. Starch will not be found in the leaf at all

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Correct Option: A
Explanation:

A green leaf is partially covered and placed in the light for several days. If it is then boiled and tested for starch with iodine starch will be found only in the part of the leaf exposed to light. This is because starch is the end product of photosynthesis. The process of photosynthesis will take place only in the location of leaves where light is present. 

In the given question, the leaf is partially covered which means, no photosynthesis takes place in these areas. Thus, when iodine is introduced to these parts after boiling, it cannot give blue-black color. Whereas the other parts which were exposed to sunlight will give blue-black color.
So, the correct answer is option A.

The presence of starch in leaves can be tested with

biology constitutes of diet nutrients and foodstuffs simple test for nutrients test for nutrients

  1. Iodine solution.

  2. Copper sulphate solution.

  3. Lime water.

  4. Benedict's solution.

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Correct Option: A
Explanation:

Starch is an important food reserve present in the leaf of the plant. The Iodine test is used to test for the presence of starch. Iodine solution where the iodine dissolved in an aqueous solution of potassium iodide reacts with the starch, producing a purple-black color.

So, the correct answer is option A.

Which of the following is not found in milk?

biology constitutes of diet effect on general health diseases caused by changes in lifestyle diet, drugs and disease

  1. Proteins

  2. Vitamin C

  3. Calcium

  4. Vitamin D

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Correct Option: D
Explanation:

Vitamin D is not found in milk but obtained from early morning Sun, cod liver oil, shark liver oil, Pilchard, Herring. Rest all are found in the milk.

Xerophthalmia is caused due to the deficiency of

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

  1. Vitamin A

  2. Vitamin B

  3. Vitamin C

  4. Vitamin D.

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Correct Option: A
Explanation:

Xerophthalmia is a progressive nutritional disease of the eye due to deficiency of vitamin A. The cornea and conjunctiva become dry, thickened, and wrinkled.

Vitamin A is necessary for the synthesis of

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

  1. Haemoglobin

  2. Visual purple

  3. Melanin

  4. R.N.A

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Correct Option: B
Explanation:

Vitamin A is an Il-cis-retinal, the lipid prosthetic group of the protein opsin in visual purple. Its defficiency affects all tissues, but the eyes are most readily affected.

A person suffering from malaria gets fever when

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

  1. Exoerythrocytic cycle is completed

  2. Signet ring stage is formed

  3. RBC generally ruptured and haemozoin granules are released

  4. All of the above

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Correct Option: C
Explanation:

Rupture of RBC result in septicemia because of release of hematite granules in the blood resulting in characteristic chills and high fever.

Which one is a correct match?

biology constitutes of diet role of vitamins functions and principal sources of vitamins and minerals need for nutrients

  1. Iron Ricket

  2. Vitamin A Scurvy

  3. Iodine Goitre

  4. Calcium - Anaemia

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Correct Option: C