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The Kastle-Meyer Test is a

• negative test for DNA.

• positive test for bacteria.

• presumptive test for blood.

• confirmatory test for blood.

The proper method of taking off gloves involves

• taking one glove off at a time, touching only the outside of the gloves, and using one glove as a "bag" to hold the other glove.removing the gloves under running water.

• pulling off both gloves at the same time.

• removing the gloves under running water.

• cutting off the gloves.

An appropriate example of a positive control for an experiment that tests for COVID-19 is

• blood.

• a sample of a virus that causes the flu.

• water.

• a sample of the virus that causes COVID-19.

A swab was taken of a red stain on the floor of a crime scene. The result of a Kastle-Meyer test performed on this swab is shown here. What does this result indicate?

• The result is negative, meaning that the stain is blood.

• The result is positive, meaning that the stain may be blood.

• The result is negative, meaning that the stain is not blood.

• The result is positive, meaning that the stain is most certainly blood.

A presumptive test

• usually is done first, is quick and indicates a possible positive result.

• is always negative.

• usually is done at the lab, takes longer and indicates a 100% certainty positive result.

• usually is done first, is quick and indicates a 100% certainty positive result.

Tags

NGSS.HS-PS1-2

According to the chart shown here, which patient has blood type AB?

• Patient 1

• Patient 2

• Patient 3

• Patient 4

Agglutination also means

• the antibodies that are circulating in blood.

• clumping of red blood cells.

• presumptive blood tests.

• blood type.

Which blood type would most likely be considered a "universal donor" meaning that this blood type can be given to any person that needs blood?

• type A

• type AB

• type B

• type O

If a person has blood type A, what would be circulating in their blood?

*It is possible that there are more than one correct answer. You must select ALL the correct answers to get the point.

• anti-A antibody

• anti-B antibody

• antigen A

• antigen B

"+" means there is a positive result. "-" means there is a negative results.

Patient D has blood type

• A

• AB

• O

• B