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MissTica
2 years ago
13

Which statement correctly describes a possible result if starch indicator is added to the water in the beaker one hour after the

potato cube was added
Biology
2 answers:
musickatia [10]2 years ago
7 0

Answer:

The starch indicator will take on a color between blue and black.

Explanation:

When you put a piece of potato in a glass of water, the starch in the potato will start to come out of the potato and stay in the water. After an hour it is likely that all of the potato starch is in the water.

When the starch comes in contact with the water in the cup, it starts to occupy the spaces between the water molecules, which means that we have a solution (starch + water), when the starch indicator is added to this solution, it reacts with the starch molecules and takes on a color between blue and black.

Lady bird [3.3K]2 years ago
5 0

Answer:

starch indicator will not change its color

Explanation:

if starch indicator is added to the water solution it will change its amber colour if starch is added in the water solution and vice versa.

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When conducting research that involves collecting biological specimens for genetic testing, which of the following issues is the
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A) Effect of findings on other family members would be most important factor.

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Genetic research is done on human DNA to know the genes and environmental factors associated with certain disease.

Institutional review board (IRB) is the regulatory authority to protect the rights of subjects invloved in a resaerch.

The genetic reaerches usually involve families, so the researcher subjects and the result of research is related to all subjects that cause increased information flow between subjects and effect their decision to partcipate independently in research. Also, if the research involve therapeutic studies special precautions would be taken to choose the subject

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What did rosenberg and trevathan discover in their study comparing human and nonhuman primate birth?
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Which structure carries instructions for producing the proteins that help make a person’s hair curly?
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Mr. Helms was admitted to the hospital with chest pains and shortness of breath. His wife was panicked since her 72-year-old hus
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Answer:

Explanation:

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2. During diastole,deoxygented blood from the inferior and superior vena cavae entering the R.atrium, passes through the tricuspid valve into the Right Ventricle. Simultaneously, oxygenated blood returning through the pulmonary veins enters the left Atrium,emptied  through the bicuspid valve into the Left.Ventricle.

During systole, the two ventricles contracts. The Right ventricle contracts, the pressure of the blood forces  the tricuspid valve to close,and therefore de -oxygenated blood pushes the pulmonary  valves to open and blood passes through the pulmonary artery to reach the lungs where exchanges of oxygen with carbon dioxide occurs.The blood is now oxygenated and returns to the left atrium via pulmonary veins.

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The Whole cycle continues.

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