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PCOL 440 Exam 2 Questions And 100% Correct Answers

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  • PCOL 440
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  • PCOL 440

PCOL 440 Exam 2 Questions And 100% Correct Answers...

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  • October 7, 2024
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  • 2024/2025
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  • PCOL 440
  • PCOL 440
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PCOL 440 Exam 2 Questions And 100% Correct Answers



Polyclonal antibodies are derived from a single clone of antibody-producing immune
cells. - ANSWER False



The active agents in snake bite antivenoms are antibodies. - ANSWER True



Monoclonal antibodies recognize multiple epitopes of a common antigen. - ANSWER
False



What is FALSE regarding Hybridoma technology?



- Allow the investigation of the detailed distribution of an antigen

- Allow diagnostic typing of diseases

- Allow therapy of human disease

can produce gene therapy vectors

can purify a substance to high degree - ANSWER can produce gene therapy vectors



Hybridoma technology developed for producing polyclonal antibodies. - ANSWER False



Concerning early pregnancy tests (EPT) select the FALSE statement.

antibodies are used to detect Human Chorionic Gonadotropin (hCG)

DNA probes are used to detect Human Chorionic Gonadotropin (hCG)

ELISA detects Human Chorionic Gonadotropin (hCG) It is crucial in pregnancy
Production of Human Chorionic Gonadotropin (hCG) is one of the early pregnancy
events DNA probes detect the presence of Human Chorionic Gonadotropin (hCG). Name
the following laboratory technique that does not make use of monoclonal antibodies
Southern blot

,Polyclonal antibodies are mixtures of antibodies that recognize distinct epitopes of the
antigen in question. - ANSWER True



NIH has requirements for scientific rigor and reproducibility that grantees are expected
to adhere to - ANSWER True



Monoclonal antibodies are derived from a single clone of antibody producing immune
cells - ANSWER True



Which of the following is FALSE



ELISA stands for enzyme linked immunosorbent assay

ELISAs are utilized to detect antibody-antigen interactions

- During an ELISA, experimental signal is detected through substrate catalysis to a
colored product by an enzyme linked to the antibody

- ELISA assays have no clinical utility whatsoever and are only being applied in
fundamental research laboratories

- Any molecule or molecular structure that stimulates the immune response is known as
antigens - CORRECT ANSWER ELISA assays have no clinical utility whatsoever and are
applied only in fundamental research laboratories



Using the allelic frequencies of the various STR loci in the associated table, calculate
the likelihood of an individual within the population having the following genotype.



Calculations performed using 2 significant figures:

D7S820: 11,11

F13A01: 6,7

LPL: 10,11 - ANSWER ~ 1 in 1,000

,Using the allelic frequencies of the various STR loci in the associated table, calculate
the likelihood of an individual within the population having the following genotype. (2
pts)



D7S820: 7, 10

THO1: 7, 9.3

TPOX: 8, 8

Calculations made using 2 significant figures: - ANSWER ~1 in 3,000



Antibodies can be used therapeutically to provide passive immunity to



- Alzheimer's Disease

- Snake bites

- Infectious diseases

- Diabetes

- Cancer - ANSWER Snake bites

Infectious diseases



The estimated cost of misidentified cell lines in biomedical research is approximately: -
ANSWER $1 billion



Cell strains are Immortal - ANSWER False



Cell Lines are Immortal - ANSWER True



Which of the following statements is NOT correct? ANSWER STR analysis can yield
absolute proof in civil and criminal cases



Any molecule or molecular structure that can elicit the immune response is called an

, antigen. ANSWER True



Which of the following statement is/are NOT true?



Antibodies are another name for immunoglobulin

There are five antibody classes

Antibodies exhibit extreme diversity

Antibodies are produced by T-cells

Antibodies have a therapeutic application ANSWER Antibodies are produced by T-cells



Antibodies can be used to provide passive immunity to infectious disease. - ANSWER
True



A karyotype is - ANSWER the characterization of the chromosomal complement of an
individual



Which technology did Dr. Stanley Gartler use to first note and publish about
misidentified cell lines in biomedical research - ANSWER Isoenzyme analysis



Established cell lines may undergo genetic evolution while grown in cell culture -
ANSWER True



Cell line authentication may be required for scientific manuscript and grant submissions
- ANSWER True



Which DNA marker is used to determine the sex of an individual from which a cell line is
derived? - ANSWER AMEL



STR analysis quantifies variation in the - ANSWER DNA size

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