Medical Interventions 1.1

Which of the following is not a medical intervention?

• Toothbrush
• Appendectomy
• Physical therapy
• None of these

In an ELISA assay, ________ and ________ are added to facilitate a color change.

• antibodies and antigens
• primary antibodies and secondary antibodies
• enzymes and substrates
• antigen and enzymes

Sue Smith was inflicted with 

• viral meningitis
• mononucleosis
• bacterial meningitis
• influenza H1N1

Which of the following most definitively identifies a pathogen during an epidemic?

• Consensus of the symptoms of those that are affected.
• Presence or absence of a rash.
• Response to antibiotics.
• DNA sequencing.

A sample of spinal fluid is taken from a college student suspected to have contracted spinal meningitis.Which diagnostic test will confirm the diagnosis fastest?

• Culturing the spinal fluid and testing for bacterial colony growth in a Petri dish.
• An ELISA Assay to determine the presence of antigens or antibodies.
• DNA sequencing
• Protein Chromatography

The role of an antibody is to

• Mark antigens that are non-self in order to prevent a pathogen from becoming active or to signal neutrophils to destroy it
• Provide a weapon that will stick to and invade surrounding cells
• To attack your own body
• Promote and attract potential pathogens

What component of DNA sequencing allows for the copying of pathogen DNA and not human or other DNA?

• The use of fluorescent nucleotides

• DNA primers

• Taq polymerase

• Heating and cooling during PCR

The collection, classification, storage and analysis of biochemical and biological information using computers, especially as applied to molecular genetics and genomics is known as which of the following?

• DNA sequencing

• Bioinformatics

• Immunological assay

• ELISA

Small amounts of DNA of a pathogen can be amplified to produce millions of copies by which process?

• ELISA
• DNA sequencing
• Polymerase Chain Reaction
• Serial Dilution

8 ml of a solvent is added to a 1 ml solute. The dilution of the resulting solution is

• 1/10

• 1/9

• 10

• 9