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Paraphin [41]
2 years ago
11

2 points

Biology
1 answer:
sweet [91]2 years ago
8 0
<h2>Answer:</h2><h2>Human blood grouping is mainly based on the antigens present on their RBC (red blood cells) and in plasma into various groups but the main antigens are namely A/B and Rh antigens.</h2><h2 /><h2>Depending on A/B antigens humans are grouped (ABO Grouping) into</h2><h2 /><h2>A group: those having A named antigen on their RBC.</h2><h2 /><h2>B group: those having B Antigen on their RBC.</h2><h2 /><h2>AB group : Those having both A B antigens on their RBC.</h2><h2 /><h2>O group: those having no antigens on their RBC.</h2><h2 /><h2>Depending on the presence of Rh antigens they are grouped into Rh positive or negative group.</h2><h2 /><h2>So if the person has both A and Rh antigens then he will be A positive blood group. But having only A antigen but not Rh Antigen then he will be A negative group.</h2>

<h2>Extra Information:</h2><h2>In addiition to these there is also the HH group. The peculiarity is that they do not express the H antigen. As a result they cannot form A antigens or B antigens on their red blood cells. Thus they can donate blood to anybody with ABO grouping but can receive blood only from Bombay blood group people.</h2><h2 />
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Drag each tile to the correct box.
ivanzaharov [21]

Answer:

Explanation:

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Tanya [424]

Answer:

<h3>C. 6.50 x 10^3</h3>

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                  mrw^{2} = \frac{GMm}{R^{2} }

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from the above equation we get ω as,

                          w=\sqrt{\frac{GM}{R^{3} } }

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              T= 2X3.14 \sqrt{\frac{(1.738 X 10^6)^{3} }{6.67 X 10^-11 X 7.36 X 10^22} }

                      T= 6.50 X 10^3 seconds

                           

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3 years ago
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Anni [7]

Answer:

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