A- About 30% of starch is hydrolyzed by saliv | vedclass

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Question

(A) Assertion $(A)$ is correct: In the buccal cavity,the chemical process of digestion is initiated by the hydrolytic action of the carbohydrate-split

Vedclass · Accepted Answer

$A$ and $R$ both are correct.

Vedclass · Answer

(A) Assertion $(A)$ is correct: In the buccal cavity,the chemical process of digestion is initiated by the hydrolytic action of the carbohydrate-splitting enzyme,the salivary amylase. About $30\%$ of starch is hydrolyzed here by this enzyme into a disaccharide—maltose. The optimum $pH$ for this enzyme is $6.8$.Reason $(R)$ is correct: The saliva secreted into the oral cavity contains electrolytes $(Na^+, K^+, Cl^-, HCO_3^-)$ and enzymes,salivary amylase and lysozyme. Lysozyme acts as an antibacterial agent that prevents infections.Conclusion: Both statements are correct,and the reason provides the necessary components of saliva that facilitate the process described in the assertion.

Column $I$	Column $II$
$(a)$ Rennin	$(i)$ Vitamin $B_{12}$
$(b)$ Enterokinase	$(ii)$ Facilitated transport
$(c)$ Oxyntic cells	$(iii)$ Milk proteins
$(d)$ Fructose	$(iv)$ Trypsinogen

Column-$I$	Column-$II$
$(A)$ Ptyalin	$(1)$ Lipids
$(B)$ Pepsin	$(2)$ Starch
$(C)$ Steapsin	$(3)$ $DNA$
$(D)$ Nuclease	$(4)$ Proteins

$A-$ About $30\%$ of starch is hydrolyzed by salivary amylase (optimum $pH\, 6.8$) in the buccal cavity.
$R-$ The saliva secreted into the oral cavity contains electrolytes $(Na^+, K^+, Cl^-, HCO_3^-)$ and enzymes,salivary amylase and lysozyme.

Similar Questions

Match the items given in column $I$ with those in column $II$ and choose the correct option.
Column $I$ Column $II$
$(a)$ Rennin $(i)$ Vitamin $B_{12}$
$(b)$ Enterokinase $(ii)$ Facilitated transport
$(c)$ Oxyntic cells $(iii)$ Milk proteins
$(d)$ Fructose $(iv)$ Trypsinogen

Describe the process of digestion occurring in the large intestine.

Analogy type questions:
$(1)$ Dental formula of an adult human: $\frac{2123}{2123}$ :: Dental formula of a small child: ..............
$(2)$ Goblet cells: Secretion of mucus :: Oxyntic cells: ............

Match the following and choose the correct combination from the options given:

Column-$I$ Column-$II$

$(A)$ Ptyalin $(1)$ Lipids

$(B)$ Pepsin $(2)$ Starch

$(C)$ Steapsin $(3)$ $DNA$

$(D)$ Nuclease $(4)$ Proteins

The digestion of which food component is affected if the pancreas is removed?

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$A-$ About $30\%$ of starch is hydrolyzed by salivary amylase (optimum $pH\, 6.8$) in the buccal cavity.$R-$ The saliva secreted into the oral cavity contains electrolytes $(Na^+, K^+, Cl^-, HCO_3^-)$ and enzymes,salivary amylase and lysozyme.