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NTSC 1115 > Serology > Flashcards

Serology Flashcards

1
Q

What is the full name of DNA

A

Deoxyribonucleic Acid

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2
Q

What is (DNA) Deoxyribonucleic Acid

A

It is the molecules carrying the body’s genetic information

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3
Q

What famous shape is DNA?

A

Double helix

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4
Q

What do red blood cells do?

A

They transport oxygen from the lungs to the body tissues which converts it to carbon dioxide

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5
Q

What are antigens?

A

a protein that stimulates the body to produce antibodies

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6
Q

What are antibodies?

A

They are the protein that destroys or inactivates a specific antigen

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7
Q

What are the 3 questions an investigator should ask while examining blood samples?

A

1) Is it blood?
2) What species is it from?
3) If the blood is human, how closely can it be associated with a particular individual?

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8
Q

What is the purpose of a Colour Test when examining potential blood samples

A

Uses phenolphthalein (Kastle-Meyer test) to detect hemoglobin. If hemoglobin is present the sample turns deep pink

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9
Q

What is a gene?

A

a unit of inheritance consisting of a DNA segment located on a chromosomes

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10
Q

What is a chromosome?

A

A structure in the cell nucleus, it is composed of DNA surrounded by proteins

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11
Q

What is Genotype?

A

It is the particular combination of genes present in the cells of an individual

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12
Q

What is Phenotype?

A

It is the physical manifestation of a genetic trait such as shape, colour and blood type

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13
Q

Typically, How much seamen is released during ejaculation?

A

2.5-6 millilitres

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14
Q

How much spermatozoa is in 1 ml of semen?

A

100 million or more

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15
Q

How is forensic light source used to test seminal stains?

A

It makes semen appear as strongly fluorescent areas

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16
Q

What is the Acid Phosphate Test?

A

It is a test that focuses on detecting the Acid Phosphate enzyme which is secreted by the prostate gland

17
Q

What is the purpose of the Acid Phosphate Test?

A

To determine if a substance is semen. It detects the Acid Phosphate enzyme which is present in semen more then any other bodily fluid.

18
Q

What is Prostate Specific Antigen (PSA)?

A

It targets an antigen which is also a unique identifier of semen.

19
Q

What is Oligospermia?

A

It is an abnormally low sperm count

20
Q

What is Aspermia?

A

It is the complete absence of sperm or sterility in males

NTSC 1115 (3 decks)

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