B Spleen is located behind the stomach and below the lungs. It stores blood and helps in flighting serious inflection it is the part of lymphatic system. The Spleen play importance roles in regard to red blood cell and the immune system it removes old red cell and holds a reserve of blood, which can be valuable in case of hermorrhagic shock, blood loss and also recycles iron. It purifies the blood and helps the immune system to recognize and attack foreign antibodies and disease The spleen is composed of the red and white pulp. White pulp producers and grows immune cell as well as blood cell, and other purifying blood.
JCECE-2004
Cell : Structure and Functions
168833
Which of the following is always absent in prokaryotic cells?
1 Ribosome
2 Mitochondria
3 DNA
4 Cell wall
Explanation:
B In prokaryotic cells mitochondria is always absent. Prokaryotic is primitive type cells which lack membrane bound structure and well developed nucleus.
WB JEE-2014
Cell : Structure and Functions
168834
Shorter generation time of \(E\). coli compared to eukaryotes may be explained on the basis of
1 Shape
2 Large surface : volume ratio
3 Presence of cell wall
4 Absence of organelles
Explanation:
B The most extensively studied prokaryote is E. coli a common bacterium found in intestine of human being prokaryotes have large. Surface area to volume ratio and it is responsible for their high metabolic rate, high growth rate and short generation time. This helps them to have a shorter generation time of the doubling time as compared to the eukaryotes.
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Cell : Structure and Functions
168832
In the animal body blood bank is:
1 heart
2 spleen
3 lungs
4 liver
Explanation:
B Spleen is located behind the stomach and below the lungs. It stores blood and helps in flighting serious inflection it is the part of lymphatic system. The Spleen play importance roles in regard to red blood cell and the immune system it removes old red cell and holds a reserve of blood, which can be valuable in case of hermorrhagic shock, blood loss and also recycles iron. It purifies the blood and helps the immune system to recognize and attack foreign antibodies and disease The spleen is composed of the red and white pulp. White pulp producers and grows immune cell as well as blood cell, and other purifying blood.
JCECE-2004
Cell : Structure and Functions
168833
Which of the following is always absent in prokaryotic cells?
1 Ribosome
2 Mitochondria
3 DNA
4 Cell wall
Explanation:
B In prokaryotic cells mitochondria is always absent. Prokaryotic is primitive type cells which lack membrane bound structure and well developed nucleus.
WB JEE-2014
Cell : Structure and Functions
168834
Shorter generation time of \(E\). coli compared to eukaryotes may be explained on the basis of
1 Shape
2 Large surface : volume ratio
3 Presence of cell wall
4 Absence of organelles
Explanation:
B The most extensively studied prokaryote is E. coli a common bacterium found in intestine of human being prokaryotes have large. Surface area to volume ratio and it is responsible for their high metabolic rate, high growth rate and short generation time. This helps them to have a shorter generation time of the doubling time as compared to the eukaryotes.
B Spleen is located behind the stomach and below the lungs. It stores blood and helps in flighting serious inflection it is the part of lymphatic system. The Spleen play importance roles in regard to red blood cell and the immune system it removes old red cell and holds a reserve of blood, which can be valuable in case of hermorrhagic shock, blood loss and also recycles iron. It purifies the blood and helps the immune system to recognize and attack foreign antibodies and disease The spleen is composed of the red and white pulp. White pulp producers and grows immune cell as well as blood cell, and other purifying blood.
JCECE-2004
Cell : Structure and Functions
168833
Which of the following is always absent in prokaryotic cells?
1 Ribosome
2 Mitochondria
3 DNA
4 Cell wall
Explanation:
B In prokaryotic cells mitochondria is always absent. Prokaryotic is primitive type cells which lack membrane bound structure and well developed nucleus.
WB JEE-2014
Cell : Structure and Functions
168834
Shorter generation time of \(E\). coli compared to eukaryotes may be explained on the basis of
1 Shape
2 Large surface : volume ratio
3 Presence of cell wall
4 Absence of organelles
Explanation:
B The most extensively studied prokaryote is E. coli a common bacterium found in intestine of human being prokaryotes have large. Surface area to volume ratio and it is responsible for their high metabolic rate, high growth rate and short generation time. This helps them to have a shorter generation time of the doubling time as compared to the eukaryotes.