0
What else can I help you with?
What indicates a test for catalase production is positive?
A positive catalase test result is indicated by the presence of bubbles or effervescence when hydrogen peroxide is added to the test organism. This indicates the production of the enzyme catalase, which breaks down hydrogen peroxide into water and oxygen gas.
What does a positive Molisch's test on an unknown substance indicate?
A positive Molisch's test result indicates the presence of carbohydrates.
What is a false-positive?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
What color changes indicate a positive result for dische diphenylamine?
A positive result for dische diphenylamine test would be indicated by a deep blue color change in the solution. This color change indicates the presence of DNA, as dische diphenylamine reacts with deoxyribose sugars in DNA to produce a blue color.
What is the positive result in barfoed's test?
A positive result in Barfoed's test is the formation of a brick-red precipitate within 1-2 minutes upon heating a solution of the carbohydrate being tested with Barfoed's reagent (copper acetate in acetic acid). This indicates the presence of a monosaccharide, particularly glucose or fructose, in the solution.
What indicates a test for catalase production is positive?
A positive catalase test result is indicated by the presence of bubbles or effervescence when hydrogen peroxide is added to the test organism. This indicates the production of the enzyme catalase, which breaks down hydrogen peroxide into water and oxygen gas.
What does a positive Molisch's test on an unknown substance indicate?
A positive Molisch's test result indicates the presence of carbohydrates.
Is the hCG strip positive indicating a potential pregnancy?
Yes, a positive result on the hCG strip indicates a potential pregnancy.
What is a false-positive?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
What happens when you times a positive by a negative?
When you multiply a positive number by a negative number, the result is always negative. This is because the negative sign indicates a reversal in direction or value. For example, if you multiply 5 (positive) by -3 (negative), the result is -15, reflecting that the product is in the opposite direction of the positive number.
What does a negative result for a spore stain indicate about the organism?
A negative result for a spore stain indicates that the organism does not form endospores. Endospore formation is a survival mechanism for some bacteria to withstand harsh environments, so a negative result suggests that the organism may be more susceptible to environmental stressors.
What is a test result indicating that a condition is present when in fact it is not?
A false positive test result occurs when a test wrongly indicates the presence of a condition that is actually not present. This can lead to unnecessary further testing, treatment, or emotional distress for the individual receiving the result.
What is a positive test result for starch?
A positive test result for starch is the formation of a blue-black color when iodine solution is added to the sample being tested. This color change indicates the presence of starch in the sample.
What is a False positives?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
What position aed?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
What does one blue line on a hospital pregnancy test mean?
Usually a single line indicates a negative result and two lines means positive.
Definition for false positive mean?
A test result which incorrectly indicates that a particular condition or attribute is present.
