12th Grade > Biology
DIGESTION AND ABSORPTION MCQs
Total Questions : 45
| Page 3 of 5 pages
Answer: Option C. -> 2.1.2.3
2.1.2.3
:
C
The number of teeth of each type is written as a dental formula for one side of the mouth, or quadrant, with the upper and lower teeth shown on separate rows. The number of teeth in a mouth is twice that listed as there are two sides.
In each set, incisors (I) are indicated first, canines (C) second, premolars (P) third, and finally molars (M), giving I:C:P:M. So for example, the formula 2.1.2.3 for upper teeth indicates 2 incisors, 1 canine, 2 premolars, and 3 molars on one side of the upper mouth
:
C
The number of teeth of each type is written as a dental formula for one side of the mouth, or quadrant, with the upper and lower teeth shown on separate rows. The number of teeth in a mouth is twice that listed as there are two sides.
In each set, incisors (I) are indicated first, canines (C) second, premolars (P) third, and finally molars (M), giving I:C:P:M. So for example, the formula 2.1.2.3 for upper teeth indicates 2 incisors, 1 canine, 2 premolars, and 3 molars on one side of the upper mouth
Answer: Option D. -> Fundic part of stomach
:
D
Zymogen or chief cells are present in the fundic part of stomach. Chief cells are usually basal in location and secrete gastric digestive enzymes as proenzymes or zymogens; pepsinogen and prorennin.
:
D
Zymogen or chief cells are present in the fundic part of stomach. Chief cells are usually basal in location and secrete gastric digestive enzymes as proenzymes or zymogens; pepsinogen and prorennin.
Answer: Option B. -> digestion and absorption of fat
:
B
Bile salts are not digestive enzymes but contains inorganic salts. They neutralize the HCl, imparting alkanity to chyme and inactivating gastric pepsin. Here, the fat is emulsified, which facilitates easy action of lipases of pancreatic juice upon the fat. The bile salts also help in absorption of fatty acid, monoglycerides, cholesterol and other lipids from chyme.
:
B
Bile salts are not digestive enzymes but contains inorganic salts. They neutralize the HCl, imparting alkanity to chyme and inactivating gastric pepsin. Here, the fat is emulsified, which facilitates easy action of lipases of pancreatic juice upon the fat. The bile salts also help in absorption of fatty acid, monoglycerides, cholesterol and other lipids from chyme.
Answer: Option C. -> Amylase
:
C
Ptyalin, a form of amylase in the saliva of humans and some animals, catalyzes the hydrolysis of starch into maltose and dextrin.
:
C
Ptyalin, a form of amylase in the saliva of humans and some animals, catalyzes the hydrolysis of starch into maltose and dextrin.
Answer: Option B. -> i).→ b., ii).→ a., iii).→d., iv).→ c..
:
B
The correct matching pairs are :
ColumnI(Enzyme)ColumnII(Substrate)i.Amylaseb.Saccharides.ii.Maltasea.Maltose.iii.Sucrasec.Sucrose.iv.αDextrinased.Dextrins.
So the correct option is B. → i).→ b., ii).→ a., iii).→ c., iv). → d..
Thesubstrateis a molecule upon which an enzyme acts. Enzymes catalyse chemical reactions involving thesubstrate.
:
B
The correct matching pairs are :
ColumnI(Enzyme)ColumnII(Substrate)i.Amylaseb.Saccharides.ii.Maltasea.Maltose.iii.Sucrasec.Sucrose.iv.αDextrinased.Dextrins.
So the correct option is B. → i).→ b., ii).→ a., iii).→ c., iv). → d..
Thesubstrateis a molecule upon which an enzyme acts. Enzymes catalyse chemical reactions involving thesubstrate.
Answer: Option B. -> casein into paracasein
:
B
In the presence of calcium rennin changes irreversibly the casein of milk to a paracasein which is then acted upon by pepsin. This enzyme is said to be absent from the stomach of adults.”
:
B
In the presence of calcium rennin changes irreversibly the casein of milk to a paracasein which is then acted upon by pepsin. This enzyme is said to be absent from the stomach of adults.”
Answer: Option C. -> Hepatic portal vein
:
C
A system of veins leading from the digestive tract to capillaries in the liver of a vertebrate is known as hepatic portal system. Thus, absorbed products of digestion (except fat) go straight to the liver and not to the heart. Pulmonary vein conveys oxygenated blood from the lungs to the left atrium of the heart. Hepatic artery supply blood to the liver.
:
C
A system of veins leading from the digestive tract to capillaries in the liver of a vertebrate is known as hepatic portal system. Thus, absorbed products of digestion (except fat) go straight to the liver and not to the heart. Pulmonary vein conveys oxygenated blood from the lungs to the left atrium of the heart. Hepatic artery supply blood to the liver.
Answer: Option D. -> All of these
:
D
Pancreas secretes pancreatic juice that acts on all type of foods. It contains pancreatic amylase for the digestion of carbohydrates; trypsinogen, chymotry- psinogen and procarboxypeptidases for the digestion of proteins, pancreatic lipase for the digestion of fats and nuclease for nucleic acid.
:
D
Pancreas secretes pancreatic juice that acts on all type of foods. It contains pancreatic amylase for the digestion of carbohydrates; trypsinogen, chymotry- psinogen and procarboxypeptidases for the digestion of proteins, pancreatic lipase for the digestion of fats and nuclease for nucleic acid.
Answer: Option B. -> casein into paracasein
:
B
In the presence of calcium rennin changes irreversibly the casein of milk to a paracasein which is then acted upon by pepsin. This enzyme is said to be absent from the stomach of adults.”
:
B
In the presence of calcium rennin changes irreversibly the casein of milk to a paracasein which is then acted upon by pepsin. This enzyme is said to be absent from the stomach of adults.”
Answer: Option B. -> i).→ b., ii).→ a., iii).→d., iv).→ c..
:
B
The correct matching pairs are :
ColumnI(Enzyme)ColumnII(Substrate)i.Amylaseb.Saccharides.ii.Maltasea.Maltose.iii.Sucrasec.Sucrose.iv.αDextrinased.Dextrins.
So the correct option is B. → i).→ b., ii).→ a., iii).→ c., iv). → d..
Thesubstrateis a molecule upon which an enzyme acts. Enzymes catalyse chemical reactions involving thesubstrate.
:
B
The correct matching pairs are :
ColumnI(Enzyme)ColumnII(Substrate)i.Amylaseb.Saccharides.ii.Maltasea.Maltose.iii.Sucrasec.Sucrose.iv.αDextrinased.Dextrins.
So the correct option is B. → i).→ b., ii).→ a., iii).→ c., iv). → d..
Thesubstrateis a molecule upon which an enzyme acts. Enzymes catalyse chemical reactions involving thesubstrate.
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