Tag: digestion and absorption

Quizzes (37) Questions (218)

Questions Related to digestion and absorption

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 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'.
Multiple choice biology digestion and absorption liver functions of the liver secretory organs

Deamination occur in

  1. Kidney

  2. Liver

  3. Nephron

  4. Both 1 and 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Deamination is the process of removal of amino acids like serine and threonine from molecules and the enzyme that catalyses the reaction is deaminases. In the human body, it takes place primarily in the liver however glutamate is also deaminated in the kidneys.

So, the correct answer is 'both 1 and 2'.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

Peyer's patches are found in 

  1. Liver

  2. small intestine

  3. Large intestine

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

Peyer's patches are aggregated lymphoid follicles located in the mucosa and submucosa of the small intestine, specifically concentrated in the ileum. They play a key role in immune surveillance of the intestinal lumen.

Multiple choice biology digestion and absorption liver functions of the liver secretory organs

Where are hormones destroyed in the human body?

  1. Liver

  2. Kidney

  3. Stomach

  4. Small intestine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Hormones are secreted by the endocrine glands which are specific in nature.
  • Each hormone causes a response in a target organ or tissues.
  • Once the function of the hormones is completed on their target organs or tissues they are destroyed. 
  • They are destroyed by the liver or the tissues of the target organs. 
  • The destroyed hormone is removed by the kidney. 
  • So, the correct answer is 'Liver'.