Conditions that must remain constant in this experiment include the temperature of the water baths and the volume of peas and beads in the respirometers. The general gas law states that if temperature and volume remain constant, then the pressure of the gas will change in proportion to the number of molecules of gas present. 2. Water moves into the respirometer pipettes because as oxygen is consumed by the peas, the pressure within the pipettes will decrease and thus the negative pressure will draw the water into the pipette. It is important to correct the readings from the peas because the glass beads are used as a control in which no changes should occur in CO2 and oxygen levels due to their abiotic nature.
Record your hypothesis on page 123. -My hypothesis is we can determine the different between each chemical reaction by the temperature change.To descide which one is exothermic and endothermic. 4. Summarize the procedures you will follow to test your hypothesis. -We measured in each chemical and added water besides, HCl we added NaOH.
* An electrogenic pump is a transport protein that generates voltage across a membrane * Animal- sodium/potassium * Plants- proton pump Understand how a co-transporter works. Where you likely find one? Understand how large molecules and particles are transported across membranes including the role of Vesicles. What is meant by endocytosis? There are several types – what are they and how do they differ?
Conclusion To obtain good results in this lab could be improved by conducting more trials of the experiment. In order to form a conclusion from a lab, an experimenter needs to average the results of at least three trials. It would also be important to ensure that the Temperature, pH and the cofactors are carefully observed to determine the results of their reactions since temperature pH and enzyme cofactors affects enzyme activity. When The experiment was completed, the temperature pH and enzyme was found to affect the reaction rate in similar way, but not exactly the same. Bennett, P. T. "Modern Topics in Biochemistry."
| | | A) | cytoskeleton | | | B) | fluid mosaic model | | | C) | impermeable membrane | | | D) | genetic material | | | | | | Feedback: Phospholipids in the plasma membrane create a fluid environment in which other molecules can float, allowing selective permeability. This is known as the fluid mosaic model. | | 13 CORRECT | | What effect has eukaryotic evolution had on cells? | | | A) | more simplified structures | | | B) | greater adaptability
Take extreme care to see that the electrodes are not damaged by the stirring bar or by rough treatment. Titrate the dissolved unknown sample with 2 M HCl, recording the burette readings and the pH at frequent intervals throughout the titration until solution reaches pH
In this experiment, the hydrate was separated into water and the anhydrous salt. However, when the masses were combined the overall mass remained constant. In order to find the percent composition, the masses of the water and the anhydrous salt had to be identified. Without these components, it would be impossible to find the percent composition of the water in the hydrate. The empirical formula is the simplest formula of a compound.
The test for Sodium Bicarbonate included mixing that with HCl. After doing this experiment bubbles would form in the solution. This was CO2 being released. This reaction is a way of testing for Sodium Bicarbonate. BACKGROUND: For these experiments a 96-well plate was used.
How can you account for this observation? -There are catalase enzymes in your body and they break down the hydrogen peroxide into water and oxygen. The foam is the oxygen bubbles that form in the water. 7. Why is it important for organisms to regulate internal temperatures or metabolic processes at different temperatures?
With which instrument will we measure the amount of product formed by the enzymatic reactions? (1 point) b. What property must a substance have in order to be measured by the instrument in part (a)? (1 point) c. What is the measurable product of each enzyme reaction? (2 points) 13.