Tag: nutrition and diet

Quizzes (16) Questions (117)

Questions Related to nutrition and diet

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

In a general sense, digestion is simply hydrolysis of complex polymers to monomers.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Food is one of the basic requirements of all living organisms. 
  • The major components of our food are carbohydrates, proteins and fats. Vitamins and minerals are also required in small quantities.  
  • Biomacromolecules in food cannot be utilised by our body in their original form. They have to be broken down and converted into simple substances in the digestive system. 
  • This process of conversion of complex food substances to simple absorbable forms is called digestion and is carried out by our digestive system by mechanical and biochemical methods. Hence, In a general sense, digestion is simply hydrolysis of complex polymers to monomers.
So, the correct answer is 'true'.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

In Amoeba, absorption of the digested nutrients occurs in

  1. Contractile vacuole

  2. Plasma membrane

  3. Cytoplasm

  4. Pseudopodia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The digested food present in the food vacuole of amoeba is absorbed directly into the cytoplasm of amoeba cell by diffusion. Since, amoeba consists of only one small cell, it does not require blood system to carry the digested food. The digested food just spreads out from the food vacuole into the whole of amoeba cell. After absorption of food, the food vacuole disappears.

Therefore, the correct answer is option C.

Multiple choice bio-chemistry minerals minerals and vitamins nutrition and diet role of various nutrients

This trace element is needed for insulin to exert its maximal effect in glucose uptake

  1. Vanadium

  2. Chromium

  3. Molybdenum

  4. Selenium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chromium is an essential element involved in the regulation of blood glucose levels within the body. It interacts with the low-molecular weight chromium binding substance to amplify the action of insulin. The amount of chromium in the body can be decreased as a result of a diet high in simple sugars, which increases the excretion of the metal through urine.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Which one of the following is wrong about the digestive system of a grasshopper?

  1. Wall of crop is muscular and its lumen is lined with cutile.

  2. A pair of small, branched salivary glands associated to anterior end of midgut.

  3. Heptatic caecae are six pairs of glands associated to anterior end of midgut.

  4. Malpighian tibules are the thread-like tibules with blunt tips associated to the function of midgut and hindgut.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Grasshoppers have the typical insect body plan of head, thorax and abdomen.
 The thorax and abdomen are segmented and have a rigid cuticle made up of overlapping plates composed of chitin. Hence, Wall of a crop is muscular and its lumen is lined with cutile is wrong about the digestive system of a grasshopper.

So, the correct option is 'Wall of the crop is muscular and its lumen is lined with cutile.'.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Choose the correct answers from the alternatives given.
Which one of the following protozoans lives in the guts of termites and helps them digest cellulose?

  1. Leishmania

  2. Physarum

  3. Trichonymph

  4. Tetrahymena
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Termites depend on protozoans which digest the cellulose ingested from the dead wood. Protozoa will die outside the termite and termite unable to digest the food without protozoans, hence they were in a symbiotic relationship.

So, the correct option is 'Trichonymph'.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

For the digestion of cellulose, an enzyme called cellulase is required. Some mammals lodge cellulase producing bacteria in their digestive system by offering them food and shelter. These mammals are mostly________

  1. Herbivores

  2. Carnivores

  3. Omnivores

  4. Sanguivores
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Herbivores are plant eating animals. Plants have cellulose that need an enzyme called cellulase for its digestion. Herbivores lodge have a microbial flora are obligate or facultative anaerobes that can decompose complex plant material, such as cellulose, hemicellulose, starch, and proteins. The hydrolysis of cellulose results in sugars, which are further fermented to acetate, lactate, propionate, butyrate, carbon dioxide, and methane.
So, the correct answer is 'Herbivores'.