Blood Components
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| Which of the following statements is true concerning human blood? a)The blood of all normal humans contains red and white cells, platelets, & plasma b)Some human populations normally lack the ability to produce plasma | show 🗑
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| Erythrocyte is another name for a)red cell b)white cell c)platelet | show 🗑
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| show | B --> There are numerous types of white cells, many of which function to seek out and destroy alien microbes in our bodies. Some other types of white cells have the function of getting rid of old unneeded blood cells.
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| The relatively clear liquid medium which carries the other cells of blood is called: a)lipid b)antibody c)plasma | show 🗑
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| Which of the following are likely to increase in quantities when the body is under attack from bacteria? a)erythrocytes b)leukocytes c)thrombocytes | show 🗑
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| When blood clumps or forms visible islands in the still liquid plasma, it is called: a)clotting b)agglutination c)none of the above | show 🗑
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| show | A --> They are relatively large protein molecules that identify a blood type. Each antigen type has unique traits that, in a sense, make it like a lock that only a specific antibody key can fit.
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| show | C --> The liquid component of blood that we call plasma is the most abundant substance in blood. However, red cells are a close second.
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| show | B --> Microorganisms carry foreign antigens on their surfaces which stimulate the production of white cell antibodies that attack the antigens as a way of getting rid of the invading parasites and subsequently develop an immunity to future attacks.
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| In the ABO blood system, you normally can be type: a)A b)B c)ABO d)A, B, AB, or O | show 🗑
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| show | A --> If they produced anti-A antibodies, it would destroy their own blood. However, they do normally produce anti-B antibodies since B type blood would be alien to them.
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| show | C --> Since type O blood normally lacks both A and B antigens, it will not be recognized as an alien type by the blood of anyone. As a result, anyone usually can be transfused with O blood without concern about rejection for this blood group.
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| Which of the ff: is true about the ABO blood system? a)It was discovered in the 1950's b)It was discovered by Karl Landsteiner c)Few people are actually typed for this system d)a and b | show 🗑
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| show | C --> In most cases these alleles are totally responsible for determining blood type phenotypes. The inheritance usually follows simple Mendelian patterns. However, there are rare exceptions such as the Bombay Phenotype described in the tutorial.
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| In determining the phenotype for the ABO blood system: a)O is dominant over A b)B is dominant over A c)O is recessive d)all of the above | show 🗑
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| show | E --> Since you could inherit A or O alleles from one parent and B or O alleles from the other, you could be any of the 4 ABO types. Look at the other answers to see how this could be true.
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| Which of the following would be least likely to be accepted as legal proof of paternity? a)ABO blood type evidence b)HLA type evidence c)DNA sequence evidence d)all are equally likely to be accepted | show 🗑
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| show | A,B,C --> Look at the other answers to see further explanations.
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| show | B --> The Rh system apparently is much more complex genetically since it involves 45 different antigens on the surface of red cells that are controlled by 2 closely linked genes on chromosome 1. In most cases, the ABO system is controlled by only 2 antig
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| show | D --> The most life threatening problem is the result of an Rh blood type incompatibility between a mother and her developing fetus.
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| Mother-fetus Rh blood type incompatibility problems can occur if the mother is _____ and her fetus is _____ . a)Rh positive; Rh positive b)Rh positive; Rh negative c)Rh negative; Rh positive d)Rh negative; Rh negative e)b and c | show 🗑
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| Which of the ff: is true of Rh +? a)They are either homozygous dominant (DD) or heterozygous (Dd) for this trait b)They are all homozygous dominant (DD) c)They are all homozygous recessive (dd) d)Their homozygous recessive(dd)or heterozygous | show 🗑
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| Who is at greatest risk for Rh mother-fetus incompatibility problems? a)Europeans b)Africans c)Native Americans d)all are equally at risk | show 🗑
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| If Dad is Rh + and Mom is Rh - , what are the chances that there will be a mother-fetus incompatibility problem? Assume, they had a child & no medical treatment done to prevent this prob. a)100% b)at least 50% c)less than 50% d)0 % | show 🗑
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| show | A --> As a result of fetal blood entering the mother`s system during her first pregnancy with an Rh positive baby, she will regularly produce antibodies to Rh antigens. They will pass through the placental barrier into her fetus and agglutinate its blood
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| show | C --> In addition to suffering life threatening anemia, they also are usually jaundiced, fevered, quite swollen, and have an enlarged liver and spleen.
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| Which of the ff: are true of mother-fetus Rh incompatibility problems? a)Preventable by injecting Rho-GAM into the mom's blood system b)Less likely to occur during the 1st preg. compared to later preg c)Med. Tx can be nearly 100% effective | show 🗑
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