What is the purpose of the beads in the tube with non-germinating peas?
The beads served as a control variable, therefore, the beads experienced no change in gas volume. Explain the effects of germination (versus non-germination) on pea seed respiration. The germinating seeds have a higher metabolic rate and needed more oxygen for growth and survival.
What was the purpose of the plastic beads only Respirometer?
Also, what was the purpose of the plastic beads only Respirometer? 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.
How were the beads used in the lab?
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. This in turn caused less oxygen to be consumed in the vials with non-germinating peas than the vials with germinating peas.
Why do you need to add glass beads to the Respirometer containing the dormant seeds?
add glass beads to vial w/ dormant peas, since dry peas take up less space than an equal quantity of germinating peas.
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 is Koh added to the Respirometer?
Oxygen is being consumed and carbon dioxide is diffusing out of the cells and released. The respirometer must try to measure both gases at the same time. In order to accomplish this, Potassium Hydroxide (KOH) is added to the device. KOH absorbs carbon dioxide and forms Potassium Carbonate and water.
What is your hypothesis for this experiment cellular respiration is highest in glass beads?
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.
Why was it important to include Koh in the test tube?
To provide oxygen required by the seeds for respiration. To absorb carbon dioxide and create partial vacuum in the flask. To absorb water from the seeds to make them dry.
What is the function of KOH in this experiment?
Potassium hydroxide is used in the experiment for the absorption of CO2 from the plant released during respiration. When KOH absorbs CO2, it creates a vacuum in the flask. The air present in the bent glass tube moves into the conical flask. This pulls the water in the bent tube further up.
Why is Vaseline used in the experiment?
Vaseline is used in this experiment to prevent escape of carbon dioxide making the apparatus air tight.
What is the use of KOH solution?
Potassium hydroxide solution has a wide range of applications in a variety of industries, from food, consumer care and pharmaceuticals to agriculture and glass manufacturing. It is also used as an electrolyte in the production of alkaline batteries and to manufacture biodiesel as well as deicers for airport runways.
Which seeds are used in the experiment to show that carbon dioxide is given out during respiration?
In this experiment, gram seeds (moistened) are used. The purpose of using these seeds is that they release carbon dioxide and are respiring actively. The released carbon dioxide is consumed by the solution of KOH.
What type of seeds are used in this experiment?
seeds r used in the experiment to show Carbon dioxide is givent out during respiration.
What is the result of the experiment where CO2 is released by the use of KOH solution?
Answer: KOH solution absorbs the CO2 released during respiration of seeds, which creates a partial vacuum in the conical flask, causing the rise in the water level of the U-shaped delivery tube. Rise in the level of water shows that CO2 is released during respiration.
What material is used during respiration?
in respiration in plants they use carbon dioxide as their product and release oxygen as their by product.
Where do the raw materials for respiration come from?
IN RESPIRATION THE RAW MATERIALS ARE OXYGEN AND GLUCOSE, WHICH ARE THE PRODUCTS OF PHOTOSYNTHESIS.
Which gas is used by plants for respiration?
oxygen
What is the respiration of raw materials?
Glucose molecules and oxygen are the two main raw materials involved in the cellular respiration process. Cellular respiration is a set of metabolic reactions, which occurs inside the living cells….Thank you.
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What are the three raw materials used in respiration?
The three products of cellular respiration are ATP energy, carbon dioxide, and water.
What is the starting material of cellular respiration?
The starting materials of cellular respiration are glucose and oxygen. The products of cellular respiration are chemical energy (ATP), carbon dioxide, and water.