Why do you need to add glass beads to the Respirometer containing the dormant seeds?

What was the purpose of making a respirometer with dormant peas and beads?

The purpose of the beads in the respirometer with non-germinating seeds is to maintain the same volume. In the respirometer without any seeds the beads act as seeds for a control group.

Why were glass beads added to this experiment?

In the experiment water will moved toward the region of lower pressure. During respiration, oxygen will be consumed and its volume will be reduced to a solid. … The respirometer with just the glass beads served as a control, allowing changes in volume due to changes in atmospheric pressure and/or temperature.

What is the purpose of using the glass beads as a control?

We used glass beads as a control. The main purpose was to see if there were any other factors affecting the experiment other than the variable being tested.

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Why keeping the same volume of peas germinated and dried and glass beads is important?

This is because germinating peas carried out a more rapid process of cellular respiration than the non-germinating peas. The beads carried out no cellular respiration. The non-germinating peas require less energy than the germinating peas so the dry peas carry out a slower process of cellular respiration.

Why was it important to use the beads only reading as correction factors?

Why is it necessary to correct the readings from the peas with the readings from the beads? The gas changes in the beads were only due to pressure and temperature, and not gas consumption, so the beads act as a control.

What would happen if the Respirometer were not tightly sealed?

If it hadn’t been tightly sealed, the air inside of the test tube would escape, causing the pressure of the oxygen to be impossible to be measured.

Why is it important to use a tube filled with glass beads in cellular respiration experiment?

The vial with glass beads alone will permit detection of any changes in volume due to atmospheric pressure changes or temperature changes. … As oxygen is used up by the respiring seeds, the gas pressure inside the respirometer will decrease and the water will flow into the pipet down its pressure gradient.

Why do non-germinating peas consume less oxygen?

The non-germinating peas shows hardly any consumption of oxygen. Since the germinating peas are germinating or sprouting, they require a more extensive amount of energy or ATP. This allows them to have high oxygen consumption rates or respiration rates in this experiment.

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What is your hypothesis for this experiment cellular respiration?

As oxygen is consumed to provide energy, germinating seeds release carbon dioxide. … HYPOTHESES: The experimental hypothesis is that germinating seeds will show a greater rate of respiration than control glass beads. Additionally, that at higher temperatures, the rate of cellular respiration in the seeds will increase.

Are non germinating seeds dead?

Non-germinating seeds, however, are dormant and use very little respiration. Some respiration must occur in order for the seed to live. The rate of cellular respiration will be greater in germinating peas than in dry peas, and temperature will have a direct effect on this rate.

How do you know if cellular respiration has occurred in a respirometer?

Scientists can measure the rate of cellular respiration using a respirometer by assessing the rate of exchange of oxygen. … Respirometers contain potassium hydroxide which traps carbon dioxide that is produced by respiration in solid form as potassium carbonate.

What effect does germination have on the amount of cellular respiration in this simulation?

what is the effect of germination on the rate of cell respiration? When a pea is germinating, it grown and the need for oxygen grows, too, so the more germinating, the rate increases. what is the effect of temparature on the rate of cell respiration in peas? Cellular respiration rate is slower at colder temperature.