CBSE Questions for Class 11 Medical Biology Digestion And Absorption Quiz 5 - MCQExams.com

.Correct option: D

Explanation:

If the secretions of the cell are excreted via exocytosis from secretory cells into an epithelial-walled duct and then into the lumen then it is called as merocrine gland Merocrine is the most predominant way of secretion. The merocrine gland releases its product and no part of the gland is damaged or removed.

Eccrine is a particular kind of merocrine sweat gland, that's is present in the human body. Hence, Merocrine is the correct answer.

$$\textbf{Correct answer: D}$$ 

$$\textbf{Option (A):}$$ 

$$\bullet$$ Hyponatremia is the condition of loss of sodium ions from the system resulting in a reduction of sodium level in the body. 

$$\bullet$$ This causes an ionic imbalance in the body. 

$$\bullet$$ Perspiration is the condition in which the loss of ions takes place with sweat. 

$$\bullet$$ Excess levels of perspiration cause loss of excess sodium ions leading to ionic imbalance. 

$$\textbf{Option (B):}$$ 

$$\bullet$$ Hyponatremia is also caused due to vomiting.

$$\bullet$$ As antiperistalsis occurs causing the removal of entire stomach content, the food containing the nutrients and ions like sodium is lost from the system as vomiting occurs with the removal of gastric juice. 

$$\textbf{Option (C):}$$ 

$$\bullet$$ Diarrhoea is the condition of excess loss of water with faeces.

$$\bullet$$ All the ions and water that are absorbed in the small intestine are lost with the loss of sodium from the epithelial lining of the large intestine. 

$$\bullet$$ This condition occurs due to specific infections in the intestine and leads to loss of sodium. 

$$\textbf{Option (D):}$$ 

$$\bullet$$ Therefore, all the given conditions lead to loss of sodium or hyponatremia.

Hence, the correct answer is option (D).

• Chymotrypsin is a proteolytic digestive enzyme component of pancreatic juice acting in the duodenum, where it performs proteolysis, the breakdown of proteins and polypeptides. 
• Digestion of protein is completed in the small intestine by the pancreatic enzymes trypsin, chymotrypsin, and carboxypeptidase. Hence, Chymotrypsin is a proteolytic enzyme.

Correct Option: A
Explanation:

• Rennin: Rennin is a proteolytic enzyme.

• It is found in the Gastric juice of infants. 

• It causes the digestion of milk proteins.

• Secretin : It secretes  by the intestinal mucosa of duodenum and jejunum. 

• It stimulates the release of water and bicarbonates ions from the exocrine pancreas in pancreatic juice.

• Calcitonin:  It is involved in calcium homeostasis.

• Oxytocin: It is the hormone that acts on smooth muscles and stimulates their contraction. 

• It stimulates strong contractions of the uterus at the time of childbirth.

• Except for rennin which is an enzyme, all others are hormones.