Human digestive system includes various glands and salivary gland is one of them. Saliva is secreted by salivary gland located under the tongue which helps in the digestion of food and it contains water, salts, mucin and some enzymes salivary amylase or ptyalin. PH is neutral i.e, 6.7. about 1.5 litRead more
Human digestive system includes various glands and salivary gland is one of them. Saliva is secreted by salivary gland located under the tongue which helps in the digestion of food and it contains water, salts, mucin and some enzymes salivary amylase or ptyalin. PH is neutral i.e, 6.7. about 1.5 litres saliva and mucus are secreted in every 24 hours in the buccal cavity. Salivation activation depends on the smell, idea and imagination of food.
Fats are the triglycerides and they are digested through the lipases. Digestion process starts in stomach and finally gets completed in the small intestine through various agents, juices etc. small intestine is the place where the fats digestion takes place, and the digestion of fats gives the fattyRead more
Fats are the triglycerides and they are digested through the lipases. Digestion process starts in stomach and finally gets completed in the small intestine through various agents, juices etc. small intestine is the place where the fats digestion takes place, and the digestion of fats gives the fatty acids and the glycerol as their end products.
Small intestine:- In this food is in the form of fat digested by the three secretions; Bile, pancreatic juice and the intestinal juice.
Bile:- bile is secreted by the liver, has no enzymes and no catalytic reactions. Salts are present which reduces the surface tension of the large fat droplets and they break them into the smaller ones and this process is known as emulsification. It produces a fine emulsion of fats in the intestine. Triglycerides get converted into the emulsified triglycerides by the action of the Bile salts.
Pancreatic juice:- it contains fat- digesting enzymes which hydrolysis fats. It converts triglycerides into the diglycerides, then the diglycerides broken down into the monoglyceride and the fatty acids and they finally get converted into the another 3 fatty acid molecules and the glycerol.
Intestinal juice:- intestinal glands secrete the intestinal juice or intestinal lipase. Only a small amount of enzymes are released into the intestinal juice. This intestinal lipase helps in the hydrolysis of the absorbed Triglycerides, Diglycerides to monoglycerides and fatty acids.
b) Mitochondria The breakdown of pyruvate to give carbon dioxide, water and energy takes place in mitochondrial matrix. And, this reaction takes place in krebs cycle also known as tricarboxylic acid cycle (TCA cycle).
b) Mitochondria
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in mitochondrial matrix. And, this reaction takes place in krebs cycle also known as tricarboxylic acid cycle (TCA cycle).
d) All of the above. The organisms make their own food, i.e, organic food from the inorganic material with the help of photosynthesis process. And, photosynthesis is the process in which when organisms take carbon dioxide and water from the environment and by using sunlight they convert them into thRead more
d) All of the above.
The organisms make their own food, i.e, organic food from the inorganic material with the help of photosynthesis process. And, photosynthesis is the process in which when organisms take carbon dioxide and water from the environment and by using sunlight they convert them into the glucose or oxygen and is taken by the chlorophyll.
a) Transport of water Xylem is a complex tissue composed of living and non-living cells. The conducting cells are mostly non- living and includes two types of tracheary elements- tracheids and vessel elements. Water and minerals from the soil enter into the plant through the root and then through roRead more
a) Transport of water
Xylem is a complex tissue composed of living and non-living cells. The conducting cells are mostly non- living and includes two types of tracheary elements- tracheids and vessel elements. Water and minerals from the soil enter into the plant through the root and then through root cortex and finally get passed into the xylem, moves upward into the leaves. The upward movement of the water and the minerals from roots to the aerial parts of the plant against the gravitational force through the xylem is known as ascent of the sap.
c) Excretion Kidneys are the paired organ that helps in maintaining the fluid electrolyte balance and acid base balance by the urine formation. Excretion is the process of removal of the feces or the metabolic waste from the body.
c) Excretion
Kidneys are the paired organ that helps in maintaining the fluid electrolyte balance and acid base balance by the urine formation. Excretion is the process of removal of the feces or the metabolic waste from the body.
Mendeleev’s periodic table 1. Elements are arranged in the increasing order of their atomic masses. 2. There are a total of 7 groups (columns) and 6 periods (rows). 3. Elements having similar properties were placed directly under one another. 4. The position of hydrogen could not be explained. ModerRead more
Mendeleev’s periodic table
1. Elements are arranged in the increasing order of their atomic masses.
2. There are a total of 7 groups (columns) and 6 periods (rows).
3. Elements having similar properties were placed directly under one another.
4. The position of hydrogen could not be explained.
Modern periodic table
1. Elements are arranged in the increasing order of their atomic numbers.
2. There are a total of 18 groups (columns) and 7 periods (rows).
3. Elements having the same valence shell are present in the same period while elements having the same number of valence electrons are present in the same group.
The electronic configuration of elements with : Atomic number 12 = 2, 8, 2 Atomic number 19 = 2, 8, 8, 1 Atomic number 20 = 2, 8, 8, 2 Atomic number 21 = 2, 8, 9, 2 Atomic number 38 = 2, 8, 18, 8, 2 Elements with atomic number 12 i.e., magnesium (Mg) and 38 i.e., strontium (Sr) will have similar phyRead more
The electronic configuration of elements with :
Atomic number 12 = 2, 8, 2
Atomic number 19 = 2, 8, 8, 1
Atomic number 20 = 2, 8, 8, 2
Atomic number 21 = 2, 8, 9, 2
Atomic number 38 = 2, 8, 18, 8, 2
Elements with atomic number 12 i.e., magnesium (Mg) and 38 i.e., strontium (Sr) will have similar physical and chemical properties as element with atomic numbers 20 i.e., calcium (Ca).
Modern periodic table is based on the atomic number and atomic number is directly related to the electronic configuration. One can find the group number and period number of an element on the basis of electronic configuration. For example, if an element has 1 or 2 electrons in its outermost shell, tRead more
Modern periodic table is based on the atomic number and atomic number is directly related to the electronic configuration. One can find the group number and period number of an element on the basis of electronic configuration. For example, if an element has 1 or 2 electrons in its outermost shell, then it would belong to group 1 or group 2. And if it has 3 or more electrons in its outermost shell, then it would belong to group 10 4- the number of electrons in the outermost shell.
All the alkali metals have one electron in their outermost shell, so they are placed in group 1. Thus, all the group 2 elements have 2 electrons in their outermost shell. In group 15 elements, there are 5 electrons in their outermost shell. Similarly, the number of shells in an element indicates its period number. For example, the atomic number of magnesium is 12 and its electronic configuration is 2, 8, 2. Thus it is an element of 3rd period.
Electronic configuration of nitrogen -2,5 Electronic configuration of phosphorus = 2, 8, 5 Nitrogen will be more electronegative because outermost shell is nearer to nucleus and therefore nucleus will attract electrons more strongly. In a group of the periodic table, electron attracting tendency decRead more
Electronic configuration of nitrogen -2,5
Electronic configuration of phosphorus = 2, 8, 5
Nitrogen will be more electronegative because outermost shell is nearer to nucleus and therefore nucleus will attract electrons more strongly. In a group of the periodic table, electron attracting tendency decreases as we move from top to bottom.
What is the role of saliva in the digestion of food?
Human digestive system includes various glands and salivary gland is one of them. Saliva is secreted by salivary gland located under the tongue which helps in the digestion of food and it contains water, salts, mucin and some enzymes salivary amylase or ptyalin. PH is neutral i.e, 6.7. about 1.5 litRead more
Human digestive system includes various glands and salivary gland is one of them. Saliva is secreted by salivary gland located under the tongue which helps in the digestion of food and it contains water, salts, mucin and some enzymes salivary amylase or ptyalin. PH is neutral i.e, 6.7. about 1.5 litres saliva and mucus are secreted in every 24 hours in the buccal cavity. Salivation activation depends on the smell, idea and imagination of food.
See lessHow are fats digested in our bodies? Where does this process take place?
Fats are the triglycerides and they are digested through the lipases. Digestion process starts in stomach and finally gets completed in the small intestine through various agents, juices etc. small intestine is the place where the fats digestion takes place, and the digestion of fats gives the fattyRead more
Fats are the triglycerides and they are digested through the lipases. Digestion process starts in stomach and finally gets completed in the small intestine through various agents, juices etc. small intestine is the place where the fats digestion takes place, and the digestion of fats gives the fatty acids and the glycerol as their end products.
Small intestine:- In this food is in the form of fat digested by the three secretions; Bile, pancreatic juice and the intestinal juice.
Triglycerides —Bile salts→ Emulsified Triglycerides
- Pancreatic juice:- it contains fat- digesting enzymes which hydrolysis fats. It converts triglycerides into the diglycerides, then the diglycerides broken down into the monoglyceride and the fatty acids and they finally get converted into the another 3 fatty acid molecules and the glycerol.
- Intestinal juice:- intestinal glands secrete the intestinal juice or intestinal lipase. Only a small amount of enzymes are released into the intestinal juice. This intestinal lipase helps in the hydrolysis of the absorbed Triglycerides, Diglycerides to monoglycerides and fatty acids.
See lessTriglycerides —Lipase→ Fatty Acid + Diglycerides
Diglycerides —Lipase→ Fatty Acid + Monoglyceride
Monoglyceride —Lipase→ Fatty Acid + Glycerol
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
b) Mitochondria The breakdown of pyruvate to give carbon dioxide, water and energy takes place in mitochondrial matrix. And, this reaction takes place in krebs cycle also known as tricarboxylic acid cycle (TCA cycle).
b) Mitochondria
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in mitochondrial matrix. And, this reaction takes place in krebs cycle also known as tricarboxylic acid cycle (TCA cycle).
See lessThe autotrophic mode of nutrition requires
d) All of the above. The organisms make their own food, i.e, organic food from the inorganic material with the help of photosynthesis process. And, photosynthesis is the process in which when organisms take carbon dioxide and water from the environment and by using sunlight they convert them into thRead more
d) All of the above.
The organisms make their own food, i.e, organic food from the inorganic material with the help of photosynthesis process. And, photosynthesis is the process in which when organisms take carbon dioxide and water from the environment and by using sunlight they convert them into the glucose or oxygen and is taken by the chlorophyll.
See lessThe xylem in plants are responsible for
a) Transport of water Xylem is a complex tissue composed of living and non-living cells. The conducting cells are mostly non- living and includes two types of tracheary elements- tracheids and vessel elements. Water and minerals from the soil enter into the plant through the root and then through roRead more
a) Transport of water
Xylem is a complex tissue composed of living and non-living cells. The conducting cells are mostly non- living and includes two types of tracheary elements- tracheids and vessel elements. Water and minerals from the soil enter into the plant through the root and then through root cortex and finally get passed into the xylem, moves upward into the leaves. The upward movement of the water and the minerals from roots to the aerial parts of the plant against the gravitational force through the xylem is known as ascent of the sap.
See lessThe kidneys in human beings are a part of the system for
c) Excretion Kidneys are the paired organ that helps in maintaining the fluid electrolyte balance and acid base balance by the urine formation. Excretion is the process of removal of the feces or the metabolic waste from the body.
c) Excretion
Kidneys are the paired organ that helps in maintaining the fluid electrolyte balance and acid base balance by the urine formation. Excretion is the process of removal of the feces or the metabolic waste from the body.
See lessCompare and contrast the arrangement of elements in Mendeléev’s Periodic Table and the Modern Periodic Table.
Mendeleev’s periodic table 1. Elements are arranged in the increasing order of their atomic masses. 2. There are a total of 7 groups (columns) and 6 periods (rows). 3. Elements having similar properties were placed directly under one another. 4. The position of hydrogen could not be explained. ModerRead more
Mendeleev’s periodic table
1. Elements are arranged in the increasing order of their atomic masses.
2. There are a total of 7 groups (columns) and 6 periods (rows).
3. Elements having similar properties were placed directly under one another.
4. The position of hydrogen could not be explained.
Modern periodic table
1. Elements are arranged in the increasing order of their atomic numbers.
2. There are a total of 18 groups (columns) and 7 periods (rows).
3. Elements having the same valence shell are present in the same period while elements having the same number of valence electrons are present in the same group.
4. Hydrogen is placed above alkali metals.
See lessIn the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these have physical and chemical properties resembling calcium?
The electronic configuration of elements with : Atomic number 12 = 2, 8, 2 Atomic number 19 = 2, 8, 8, 1 Atomic number 20 = 2, 8, 8, 2 Atomic number 21 = 2, 8, 9, 2 Atomic number 38 = 2, 8, 18, 8, 2 Elements with atomic number 12 i.e., magnesium (Mg) and 38 i.e., strontium (Sr) will have similar phyRead more
The electronic configuration of elements with :
See lessAtomic number 12 = 2, 8, 2
Atomic number 19 = 2, 8, 8, 1
Atomic number 20 = 2, 8, 8, 2
Atomic number 21 = 2, 8, 9, 2
Atomic number 38 = 2, 8, 18, 8, 2
Elements with atomic number 12 i.e., magnesium (Mg) and 38 i.e., strontium (Sr) will have similar physical and chemical properties as element with atomic numbers 20 i.e., calcium (Ca).
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Modern periodic table is based on the atomic number and atomic number is directly related to the electronic configuration. One can find the group number and period number of an element on the basis of electronic configuration. For example, if an element has 1 or 2 electrons in its outermost shell, tRead more
Modern periodic table is based on the atomic number and atomic number is directly related to the electronic configuration. One can find the group number and period number of an element on the basis of electronic configuration. For example, if an element has 1 or 2 electrons in its outermost shell, then it would belong to group 1 or group 2. And if it has 3 or more electrons in its outermost shell, then it would belong to group 10 4- the number of electrons in the outermost shell.
All the alkali metals have one electron in their outermost shell, so they are placed in group 1. Thus, all the group 2 elements have 2 electrons in their outermost shell. In group 15 elements, there are 5 electrons in their outermost shell. Similarly, the number of shells in an element indicates its period number. For example, the atomic number of magnesium is 12 and its electronic configuration is 2, 8, 2. Thus it is an element of 3rd period.
See lessNitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
Electronic configuration of nitrogen -2,5 Electronic configuration of phosphorus = 2, 8, 5 Nitrogen will be more electronegative because outermost shell is nearer to nucleus and therefore nucleus will attract electrons more strongly. In a group of the periodic table, electron attracting tendency decRead more
Electronic configuration of nitrogen -2,5
See lessElectronic configuration of phosphorus = 2, 8, 5
Nitrogen will be more electronegative because outermost shell is nearer to nucleus and therefore nucleus will attract electrons more strongly. In a group of the periodic table, electron attracting tendency decreases as we move from top to bottom.