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why is a person with blood group 'o' considered a universal donor ? what is special in such blood group ?
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why is our blood red?
Blood is red because it is made up of cells that are red, which are called red blood cells. But, to understand why these cells are red you have to...
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1. the number of ways in the squares of 8x8 chess board can be painted red or blue so that each 2x2 square has two red and two blue squares is
Solution: For an m×n chessboard there are 2m+2n−2 ways. Case I. There are two horizontally adjacent squares of the same color: 2m−2 ways. Case II. There are two vertically adjacent squares of the same color: 2n−2 ways. Case III. None of the...
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A man with blood group A marries a woman with blood group O and their daughter has blood group O.
No. This information is not sufficient to determine which of the traits − blood group A or O − is dominant. This is because we do not know about the...
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How does cytokinesis in plant cells differ from that in animal cells?
Cytokinesis in plant cells Cytokinesis is animal cells (i) The division of the cytoplasm takes place by cell plate formation. (i) The division of the cytoplasm takes place by cleavage. (ii) Cell...
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Explain giving reasons The presence of CO produce the amount of haemoglobin available in the blood for carrying oxygen to the body cells?
CO combine with haemoglobin of the red blood corpuscles (RBC) about 200 times more easily than Oxygen to form carboxyhaemoglobin reversibly as follows ; Hb + CO = HbCO Thus...
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Which of the following cells is found in the cartilaginous tissue of the body? (a) Mast cells (b) Basophils (c) Osteocytes (d) Chondrocytes
(d) Chondrocytes
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Which of the following does not lose their nucleus at maturity? (a) Companion cells (b) Red blood cells (c) Vessel (d) Sieve tube cells
(a) Companion cells
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In monohybrid cross of red and white flower, Mendel got only red flower. On setting the F1 plants having red flower
On crossing red and white flower only red colour flower appeared in the F1 generation. But the white colour flower again appear in the F2 generation which is raised out...
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A bag contains 5 white balls and 7 red balls. If 5 balls are drawn at random, the probability that 3 balls are red and the rest are white.
The answer is 175/396
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