Why do germinated peas undergo cell respiration?
The oxygen consumed increases with time because the peas are res pirating, which require oxygen. Why do germinating peas undergo cell respiration? They are growing at a fast rate and need energy to grow, so they use cellular respiration.
Why do non germinating peas respire less?
- Place 25 germinating peas in the respirometer vial (s) 1.
- Place 25 dry peas and beads in your respirometer vial (s) 2.
- Place beads only in your respirometer vial (s) 3.
Is chlorophyll needed in cellular respiration?
The cellular organelles necessary for photosynthesis include chloroplasts containing the green pigment and chlorophyll, which traps sunlight. Respiration is the process in which cells use food produced to release stored energy. Plants perform cellular respiration as well as photosynthesis.
Is glucose needed for cellular respiration?
In the human body, glucose constitutes the primary source of energy for the brain and is used as the main substrate for energy production via cellular respiration. Glucose's role in cellular respiration is essential, as it provides the building blocks for ultimately creating ATP, the energy currency used by living organisms.
Why do peas have cellular respiration?
The reason that Cellular Respiration occurs more rapidly in germinating peas could be explained by the fact that non-germinating are not experiencing any stimulating growth or energy supplies that would equip them to perform cellular respiration at such a fast pace.
What is released during the germination process?
Water and Carbon dioxide are released during the process. This experiment aimed to conclude whether or not non-germinating peas are undergoing Cellular Respiration before they begin germination.
Is cellular respiration the same as photosynthesis?
Cellular Respiration is essentially the “opposite” of photosynthesis; in other words, the equation is made up of the same parts as photosynthesis, but the “parts” are set up in reverse order as shown: Photosynthesis: Sunlight +. 6H20 + 6CO2 C6H12O6 + 6O2, and Cellular Respiration: C6H12O6 + 6O2 6H20 + 6CO2 + Energy.
Does a lower temperature slow down cellular respiration?
The original hypotheses were: “Cellular Respiration will occur at a faster rate in Germinating peas than in non-germinating peas” and “A lower temperature will slow the rate of Cellular respiration”. Cellular Respiration is essentially the “opposite” of photosynthesis; in other words, the equation is made up of the same parts as photosynthesis, ...
Is cellular respiration occurring in germinating peas?
Based on the results of the experiment, it is safe to conclude that Cellular respiration is occurring in germinating and non-germination peas, however it occurs much faster in the highly active, room temperature, germinating peas. Cellular Respiration in Peas (Germinating and Non-Germinating). (2016, Aug 27).
Why aren't peas germinating?
In addition to the germinating peas, the non-germinating peas, are not germinating so because of this they do not need significant amount of ATP production. Therefore, the non-germinating peas have a significantly low rate of respiration in comparison with the germinating peas.
What happens to a pea if it germinates?
The hypothesis of this lab states that if the peas are germinated then the rate of cellular respiration will be higher in both room temperature and cold temperature. If the temperature of water is cooler than room temperature, then the process of cellular respiration of the peas will decline.
What happens to the volume of gas in a respirometer?
Since the carbon dioxide produced is removed by reaction with potassium hydroxide (Forming K 2 CO 3 + H 2 O as shown below), as oxygen is used by cellular respiration the volume of gas in the respirometer will decrease. As the volume of gas decreases, water will move into the pipet.
How do living cells get energy?
Living cells require transfusions of energy from outside sources to perform their many tasks – for example, assembling polymers, pumping substances across membranes, moving, and reproducing (Campbell, and Reece 162). Heterotrophs obtains its energy for its cells by eating plants that makes it own food (Autotrophs); some animals feed on other organisms that eat plants. The most beneficial catabolic pathway in an organism is cellular respiration, in which oxygen and glucose are consumed and where carbon and water become the waste products. The purpose of cellular respiration is to convert glucose into ATP (energy) for the organism. Respiration consists of glycolysis, the Krebs Cycle, and the oxidative phosphorylation. Glycolysis, which occurs in the cytosol, breaks the six carbon glucose molecule into two pyruvates. During this stage two ATP and two NADH molecules are made. The next step in respiration is the Krebs cycle. The Krebs cycle uses the two pyruvates made during glycolysis and converts them to Acetyl-CoA and carbon dioxide to make three NADH, one FADH 2 , and two CO 2 through redox reactions, and goes to the Electron Transport Chain. ATP is also formed during the Krebs cycle (Campbell, and Reece 166). Since two pyruvates are made during glycolysis, the Krebs cycle repeats two times to produce four CO 2, six NADH, two FADH 2, and two ATP (Campbell, and Reese 166). The last stage in cellular respiration is the Oxidative phosphorylation Electron Transport. The Oxidative phosphorylation occurs in the inner membrane of the mitochondria. The electron transport chain is powered by electrons from electron carrier molecules NADH and FADH 2 (Campbell, and Reese 166). As the electrons flow through the electron chain, the loss of energy by the electrons is used to power the pumping of electrons across the inner membrane. At the end of the electron transport chain, the electrons from the inner membrane bind to two flowing hydrogen ions to form water molecules. The protons, outside the inner membrane, flow down the ATP gradient and make a total of thirty two ATP (Campbell, and Reese 166).
What is the last stage of cellular respiration?
The last stage in cellular respiration is the Oxidative phosphorylation Electron Transport. The Oxidative phosphorylation occurs in the inner membrane of the mitochondria.
How many ATP do protons make?
The protons, outside the inner membrane, flow down the ATP gradient and make a total of thirty two ATP (Campbell, and Reese 166). In this experiment, an apparatus called a respirometer is used. A respirometer is a tool used to observe exactly how much oxygen was consumed by the peas and the glass beads.
What is the next step in respiration?
During this stage two ATP and two NADH molecules are made. The next step in respiration is the Krebs cycle.
