Blood 12 Flashcards by Adwoa B | Brainscape

Q

What are the 3 blood groups?

A

A. B and O

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Q

What determines a person’s blood group?

A

The type of antigens that are present in or on the red blood cell outer membrane

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Q

What is the reason hypothesized for why blood cells differ?

A

It is thought that different blood groups offer protection from various diseases

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Q

What blood type is most common in Europe?

A

Type O

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Q

What can an individual be known as in terms of the Rhesus system?

A

Either Rh D+ or Rh D-

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Q

What is less common in terms of Rhesus?

A

Being Rhesus - (Rh D-)

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Q

What is an Antigen?

A

A molecule that can give rise to an immune response

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Q

What is the H antigen on RBCs made of?

A

An oligosaccharide or small sugar molecule

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Q

What is the H antigen on RBCs made of?

A

An oligosaccharide or small sugar molecule

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Q

What is the H antigen on RBCs made of?

A

An oligosaccharide or small sugar molecule

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Q

What is the H antigen on RBCs made of?

A

An oligosaccharide or small sugar molecule

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Q

What is the H antigen on RBCs made of?

A

An oligosaccharide or small sugar molecule

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Q

What does the H antigen serve as?

A

The precursor to the ABO antigen on the RBC

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Q

Which enzymes cause the H antigen to be converted into and AB or O antigen?

A

The gene which codes for the corresponding transferase (A, B, or O)

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Q

What does an A or B transferase do?

A

Causes the addition of a sugar molecule at the end of an H antigen on the RBC

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Q

What does having the O gene cause?

A

No functional enzyme on the end of the H antigen