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A level Biology: Post your doubts here!

princeali97

princeali97

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Mohammed salik said:
Tissue Fiud and Lymph are almost same (they are produced due to leaked Plasma from BLOOD) ( lymph has More WBC )
Blood has All Large Proteins and RBC which is Not present in Tissue Fliud and Lymph!
Click to expand...
Lymph and tissue fluid both have protein molecules in them my brother.Protein molecules in tissue fluid move into lymph vessels because they are wider than capillaries.
Tissue fluid contains fewer protein molecules than plasma and no RBCs.
 
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Mohammed salik

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princeali97 said:
Lymph and tissue fluid both have protein molecules in them my brother.Protein molecules in tissue fluid move into lymph vessels because they are wider than capillaries.
Tissue fluid contains fewer protein molecules than plasma and no RBCs.
Click to expand...
Brother if You read carefully i Said LARGE protiens such and Albumen, Thrombin. etch!! :p
Which cant pass through Capillary Pores !
 
princeali97

princeali97

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Mohammed salik said:
Describe Differences and similarities between T-cells And B-cells?
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Differences :
T-cells
  1. They are responsible for cell mediated immunity
  2. Life span is long
  3. Differentiate inside Thymus Gland
  4. Absence of surface antibodies
  5. Transformed in small lymphocytes by antigens
  6. They secrete Cytokines
  7. Their sub population are Cytotoxic T cells, Helper cells and suppressor cells.
  8. They stimulate phagocytes and B-cells into activity.
B-cells
  1. They are responsible for Humoral immunity
  2. Life span is short
  3. Differentiate inside the Bone Marrow
  4. Surface Antibodies present
  5. Transformed to plasma cells by antigens
  6. They secrete antibodies
  7. Their sub population are memory cells and plasma cells
  8. B-cells or B-lymphocytes produce antibodies
 
princeali97

princeali97

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Similiarties:
They both produce antigens in response to an exposure to antibodies. They are both WHITE blood cells and the makeup and cell structure is similar in both. They are also both capable of binding directly to antigen
 
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Mohammed salik

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princeali97 said:
Differences :
T-cells
  1. They are responsible for cell mediated immunity
  2. Life span is long
  3. Differentiate inside Thymus Gland
  4. Absence of surface antibodies
  5. Transformed in small lymphocytes by antigens
  6. They secrete Cytokines
  7. Their sub population are Cytotoxic T cells, Helper cells and suppressor cells.
  8. They stimulate phagocytes and B-cells into activity.
B-cells
  1. They are responsible for Humoral immunity
  2. Life span is short
  3. Differentiate inside the Bone Marrow
  4. Surface Antibodies present
  5. Transformed to plasma cells by antigens
  6. They secrete antibodies
  7. Their sub population are memory cells and plasma cells
  8. B-cells or B-lymphocytes produce antibodies
Click to expand...
princeali97 said:
Similiarties:
They both produce antigens in response to an exposure to antibodies. They are both WHITE blood cells and the makeup and cell structure is similar in both. They are also both capable of binding directly to antigen
Click to expand...
Great...! Is this from M.s?
Thnx ! :)
 
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