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Serology
Serology study questions
| Question | Answer |
|---|---|
| Blood types are determined by the presence of protein located on | only on the red blood cells |
| Blood proteins that determine blood types are | on the surface of the cell membrane |
| If a person has type A-blood, then they have | only the A protein |
| If the person has type O+ blood, then they have | the Rh protein but not the A or the B proteins |
| To determine one's blood type, what is added to the slide? | blood and antibodies |
| Genes that influence a given characteristic and are aligned with one another on a chromosome pair are known as | alleles |
| To determine whether a bloodstain is of human or animal origin, the serologist ail perform: | a precipitin test |
| Which blood components are directly pertinent to the forensic aspects of blood identification? | RBC's and blood serum |
| In the United States the rarest blood type is: | AB |
| What are produced utilizing rapidly multiplying blood-cancer cells, produced by injecting a mouse with an antigen, and expected to be medicine's version of the magic bullet? | monoclonal antibodies |
| A ___________________ is an observable characteristic of an individual. | phenotype |
| PSA (p30) is a: | protein unique to seminal plasma |
| In routine blood banking, which antigen(s) must be determined in testing for compatibility? | A, B, and D |
| In which phenotype pairings can the genotypes of the individuals be directly known? | Type AB and O |
| What is an immunological assay technique that utilizes antibodies, screening test for suspected marijuana smoking, and speedy test to detect methadone in urine? | EMIT |
| Paternity testing is done involving a woman with type AB blood who has accused a man with type B blood of fathering her child who has tested AB. What can be determined in this case? | The male could have fathered the child. |
| Evidence to substantiate that rape occurred could include: | physical injuries, hair and fibers, blood and semen |
| Type AB blood contains: | both A and B antigens |
| The sensitivity of the Takayama and Teichmann crystal tests for the identification of bloodstains is ___________________ then the sensitivity of the Kastle-Meyer color test for bloodstain identification. | less than |
| The amount of spatter from a blood droplet falling on a hard, non-porous surface is ________________ that of a drop of blood of equal size, falling from the same distance, onto a softer, porous surface. | less than |
| The liquid that separates from the blood when a clot is formed is called the | serum |
| Type B individuals have _________________ antigens on their cells. | B |
| Type O persons have _________________ A and B antibodies in their serum. | both |
| ____________________ describes the clumping together of red blood cells by the action of an antibody. | Agglutination |
| All cells in the human body except the reproductive cells, have ____________ PAIRS of chromosomes. | 23 |
| When a pair of allelic genes is identical, the genes are said to be | homozygous |
| Semen is unequivocally identified by the microscopic appearance of | spermatozoa |
| What tests are performed on semen samples? | Acid phosphatase test and PSA test |
| Which tests may be used to determine the presence of blood? | Luminol and Kastle-Meyer |
| When a droplet of blood strikes a surface perpendicular (90 degrees) the resulting bloodstain will be circular. | true |
| The point of convergence of a group of bloodstains can be determined by | drawing lines through the long axis of the stains |
| PGM refers to a: | polymorphic enzyme found in red blood cells |
| Which blood type is the universal donor? | O |
| Which blood type is the universal recipient? | AB |
| Used to locate and characterize seminal stains | Acid Phosphatase |
| An immunoassay technique which uses drugs that are marked with radioactive tags | RIA |
| Uses antibodies designed to attack one and only one site on an antigen. | Monoclonal |
| Based on the principle that when antigen and antibody move toward each other a cloudy ring or band will form at the interface of the two. | precipitan |
| If this test is positive it will turn pink | Kastle-Meyer |
| This presumptive color test turns green in the presence of blood. | Hemastix |
| Discovered that blood can be classified by its type. | Karl Landsteiner |
| Pioneering blood spatter scientist. | Paul Kirk |
| The fluid portion of unclotted blood. | plasma |
| Agglutinogen | Antigen |
| An antibody will react with (any, only a specific) antigen. | only a specific |
| Type AB blood will (be, not be) agglutinated by both anti-A and anti-B serum. | be |
| The combination of genes present in the cells of an individual is called the | genotype |
| Males having a low sperm count suffer from a condition known as | oligospermia |
| Blood type are determined when a patient's blood is tested with known | anti-sera |
| A hemolytic disease of the newborn involving an Rh negative mom and an Rh positive baby. | erythroblastosis fetalis |