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Which type of organism was most probably added to the test tube?
green alga
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.
Why is it advisable to include a known oxidase-positive control in any test of an unknown organism?
Including an oxidase-positive control in a test of an unknown organism helps to confirm the presence of the enzyme oxidase in the test system. This control provides a baseline for comparison with the unknown organism to determine if it also produces oxidase. This is particularly important in biochemical testing to accurately identify the unknown organism based on its metabolic properties.
What cross should a scientist perform in order to determine if the organism is heterozygous or homozygous dominant?
The scientist should perform a test cross between the organism and a homozygous recessive organism. If all offspring show the dominant trait, the original organism is homozygous dominant. If some offspring show the recessive trait, the original organism is heterozygous.
Why is important to inoculate a single tube per organism when performing a MRVP test?
Inoculating a single tube per organism ensures that the test results are specific to that particular organism. Mixing multiple organisms in one tube can lead to inaccurate results due to potential interactions or competition between the different organisms during the test. Keeping the organisms separate helps to maintain the test's reliability and accuracy.
An organism was added to a test tube containing water which was then sealed and placed in sunlight The test tube showed what type of organism was added an increase in oxygen over a period of timeW?
The organism added to the test tube was likely a photosynthetic organism, such as algae or a plant, that produces oxygen through photosynthesis in the presence of sunlight. The increase in oxygen observed over time is a result of this photosynthetic process where the organism uses sunlight to convert carbon dioxide and water into oxygen and glucose.
An organism was added to a test tube containing water which was then sealed and placed in sunlight The test tube showed what type of organism was added an increase in oxygen over a period of time?
The organism added was likely a photosynthetic organism, such as algae or a plant. Photosynthetic organisms use sunlight to convert carbon dioxide and water into oxygen during photosynthesis. The increase in oxygen observed in the test tube is a result of this process taking place.
Which type of organism was most probably added to the test tube?
green alga
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.
Why is it avisable to perform test of unknown catalase positive organism along with the organism you are testing?
you need to test both the experiment-organism and an organism which you already know is catalase-positive, in the same environment in order to compare the results and determine if your experiment-organism is catalase-positive. - See more at: http://www.chacha.com/question/why-is-it-advisable-to-perform-a-catalase-test-on-a-known-catalase%26%2345%3Bpositive-organism-along-with-the-organism-you-are-testing#sthash.oChX8ZqW.dpuf
Why is it advisable to include an oxidase-positive control organism in any test of an unknown organism?
It's advisable so that the oxidase test determines whether or not an organism has cytochrome oxidase in its electron transport chain.
Why is It advisable to include an oxidase positive control organism in any test of an unknown organism?
It's advisable so that the oxidase test determines whether or not an organism has cytochrome oxidase in its electron transport chain.
Test in which anticoagulant is added to venous blood sample and the distance cells fall in the tube over time is determind?
This test is likely the sedimentation rate test, where anticoagulant is added to a venous blood sample and it is placed in a tube to measure how quickly red blood cells settle at the bottom. This test can help indicate inflammation or infection in the body based on the rate of sedimentation.
Why is it advisable to include a known oxidase-positive control in any test of an unknown organism?
Including an oxidase-positive control in a test of an unknown organism helps to confirm the presence of the enzyme oxidase in the test system. This control provides a baseline for comparison with the unknown organism to determine if it also produces oxidase. This is particularly important in biochemical testing to accurately identify the unknown organism based on its metabolic properties.
What cross should a scientist perform in order to determine if the organism is heterozygous or homozygous dominant?
The scientist should perform a test cross between the organism and a homozygous recessive organism. If all offspring show the dominant trait, the original organism is homozygous dominant. If some offspring show the recessive trait, the original organism is heterozygous.
What is the positive organism for citrate utilization test?
The positive organism for citrate utilization test is usually Escherichia coli. When this bacterium is able to grow on a citrate-containing medium, it will produce alkaline byproducts that change the pH of the medium, turning it from green to blue. This color change indicates a positive result for citrate utilization.
Why is important to inoculate a single tube per organism when performing a MRVP test?
Inoculating a single tube per organism ensures that the test results are specific to that particular organism. Mixing multiple organisms in one tube can lead to inaccurate results due to potential interactions or competition between the different organisms during the test. Keeping the organisms separate helps to maintain the test's reliability and accuracy.
