IDentify the two hypotheses being tested in this activity - ANSWER 1. is the rate of respiration higher for germinated peas or non-germinated peas?
2. is
... [Show More] the rate of respiration higher for germinated peas in room temperature water or germinated peas in cool water (10C)?
This activity uses a number of controls. What conditions must remain constant? Why? - ANSWER Conditions that must remain constant are volume and time. Volume must be controlled because since volume and pressure are inversely proportional, meaning that as one goes up the other goes down, if the volumes for the germinated peas and the non-germinated peas was different, the pressure being measured by the LabPro wouldn't be as strong for the one with a lesser volume, yielding different results for the experiment. Time must also be kept at constant because if you do one for a longer time than the other, the rate of respiration might be different than it would've if you used the same times for both.
Did cell repsiration occur in the peas? How do you know? - ANSWER Cell respiration did occur in the peas. I know this because as time went by and the labpro measured the pressure in the test tube, the pressure went down. This is an indication of the levels of Oxygen in the test tube going down, which means as more oxygen was consumed, the amount of CO2 went up, meaning the cellular respiration reaction occurred as well.
Describe the relationship between the amount of O2 consumed and time. - ANSWER The relationship between the amount of O2 consumed and time is that as more time goes by, more Oxygen is consumed. This means their relationship is a directly proportional relationship-- the more time passed, the more oxygen consumed and the less time passed- the less oxygen consumed.
What is the effect of germination on the rate of cell respiration in peas? Why do you think this? - ANSWER The affect of germination on the rate of cell respiration in peas is that in peas that are germinated, the rate of cell respiration is higher because the cells are growing/going through mitosis which requires energy/ATP in order to be carried out which is generated through the process of cellular respiration. In non-germinating peas, they aren't going through mitosis and therefore don't need as much ATP, so their rate of cellular respiration is much less.
What is the effect of temperature on the rate of cell respiration in the peas? Why do you think this is? - ANSWER The effect of temperature on the rate of cell respiration in the peas is that the higher the temperature, the higher the rate of cell respiration because the cool water causes the enzymes to slow down, causing the reactions of cellular respiration to slow down, and therefore the rate of respiration to be slower. [Show Less]