Quizlet Spring Break Review
Another Analyze Graph Question
10 minutes
The mean ET50 for the old leaves was 9.2 minutes with a standard deviation of 0.8 minutes. Between what two values would you expect the ET50 to be 95% of the time?
7.6 minutes and 10.8 minutes
Using varying molarities of sucrose solutions, the molarity of potato cores was determined to be 0.35 M at a temperature of 21∘ C. Calculate the solute potential (ψ S). Enter your answer to two decimal places.
-8.55 bars
Using the data provided in the following graph, what is the rate of O2 consumption in germinating peas at 22∘ C over the first 10 minutes?
0.08 mL O2 per minute
Graph Question
0.35 M
Water molecules pass through a semipermeable membrane.
2
Part E
Graph B
Which of these two plants' cells have the highest water potential?
A
Predict the result if KOH were not added to the vial.
The volume of gases in the vial would remain constant as each molecule of O2 used in cellular respiration would be replaced by a molecule of CO2.
Examine the graph. Do the data suggest that there is a statistically significant difference between the rate of photosynthesis in young leaves versus older leaves?
Yes, because the error bars of the means do not overlap.
Which of the following is a reasonable claim based on the data presented in the graph?
The rate of O2 consumption by germinating peas at 22∘ C is approximately twice that of O2 germinating peas at 12∘ C.
and the information provided in the table below, determine the standard deviation for "older leaves." Have a calculator in hand to do the calculations.
0.8 minutes
Match the results you would expect with each change to the experimental design. The same result may occur with more than one experimental change.
1. The reaction will remain steadily over the 8 minutes 2. The reaction rate will approach zero before 8 minutes. 3. The reaction rate will be close to zero over the entire 8 minutes. The reaction will remain steadily over the 8 minutes
Drag the numbers on the left to the appropriate blanks on the right to complete the sentences. Numbers may be used more than once.
1. 0 2. -0.2 3. into
Interpret the graph below to complete the following sentences. Drag the correct term to the blank.
1. 37 C 2. 76 C 3. 48 C 4. Enzyme A
What is the rate of the reaction between 4 and 6 minutes? Enter your answer to one decimal point.
7.5 mL O2 per minute
This graph shows productivity in an aquatic environment, determined by the amount of oxygen produced. At what light intensity do you expect there to be no net primary productivity?
Any intensity below 10%
In a sealed respirometer, CO2 molecules are being removed from the vial as precipitate; thus, "n" decreases. Refer again to the equation. What effect would decreasing the number of gas molecules in the vial have on pressure within the vial and movement of water through the pipette?
Pressure would decrease and water would enter through the pipette.
Sort the reactants and products of photosynthesis to the correct bins.
Reactant: C02 H20 light energy Products C6H12O6 O2
Using the equation for cellular respiration as a guide, sort the following items depending on whether they are the reactants or products of cellular respiration. (Try to do this without looking back! This is one equation you should have memorized.)
Reactants: C6H12O6, O2 Products: CO2, H2O, energy
Predict how each condition would affect the rate of photosynthesis by dragging the different variables to the appropriate column.
0.2% 0.01% Green White 100W 40W Red Green 10 30 22 15
When conducting an experiment to compare the rate of respiration in germinating peas at two different temperatures--12
A vial with an equal volume of glass beads
Referring to the graph, what explains the shape of the data line between 8 minutes and 10 minutes
All of the substrate has been consumed
Which of the curves shown on these graphs might represent the profile(s) for the DNA polymerase enzyme isolated from the thermal pool bacteria?
B, D
If the mass of each dialysis bag shown in the experimental set-up below is measured before each is immersed in its respective solution, and the mass is measured again 45 minutes later, which bag would you predict will show the greatest increase in mass?
Big 0.2m Small 1.0m
Using this information as a guide, which of the following would be the most valid scientific question to pose considering the evolutionary history of peas?
Do pea roots have a higher rate of cellular respiration than pea leaves?
If you were given a cube of modeling clay, how could you shape it to have the greatest surface area-to-volume ratio?
Flatten the cube into a pancake with numerous projections.
Sort each item to the appropriate bin.
Independent: Age of leaf, Plotted on x axis Dependent: time it takes five disks to rise, Plotted on y axis Factors held constant: Species of plant, sodium bicarbonate concentration, light intensity, size of leaf disk
The following figure shows an open container where solute has been added to the water, bringing its solute potential to -3.4 bars. What effect does adding solute to distilled water have on its solute potential? On its water potential?
It lowers the solute potential and lowers the water potential.
In the parts of the investigation that follow, we conduct experiments using leaf disk samples to test whether they are undergoing photosynthesis based on whether they float in solution. What gives the leaf disks their buoyancy?
Oxygen accumulating in the air spaces within the mesophyll.
In a sealed respirometer, what effect would decreasing the ambient temperature have on the pressure within the vial and the movement of water through the pipette?
Pressure would decrease and water would enter through the pipette.
Using the values provided, arrange the beakers in the order of the mass inside the dialysis bags after the experiment has run for 45 minutes, beginning with the bag that loses the most mass first.
Smallest: Big 1.0, Big 0.6, Big 0.4, Big 0.2 Small 0.2, Big 0.2, Small 1.0
Using what you know of water potential, indicate which of the following statements is true.
The beet core in beaker A is at equilibrium with the surrounding water.
Which of the following correctly describes an enzyme reaction?
The enzyme lowers the activation energy of the reaction.
What results would you expect?
The level of CO2 would increase more rapidly in chamber B than in chamber A.
Predict what will occur when all the substrate has been broken down into its products.
The level of oxygen in the cylinder will remain constant.
Another Analyze Graph question
The light source was removed after 20 minutes
Which of the following conclusions is supported by the data shown in the graph?
The rate of cellular respiration increases as the temperature increases in both germinating and nongerminating peas.
Drag True or False to the end of each statement.
True False False False False True
Part D
Water will move into the bag
Which metric would provide the most useful information for comparing the trials?
the median time it takes five disks to rise in each trial
Which beaker(s) contain(s) a solution that is hypertonic to the bag? Select all that apply.
Big 0.4m Small 0.2m Big 0.6m Small 0.2m Big 1.0 Small 0.2
In order to keep the rate of an enzyme reaction constant over the entire time span of the experiment, which of the following should be done?
Continually add more substrate
Consider the following two ecosystems, located at the same latitude, and using the information you learned in this investigation choose the most accurate answer.
Ecosystem B would be expected to have the higher gross primary productivity because of more sunny days and a longer growing season.
If you had a sample organism and wanted to measure its rate of cellular respiration, which of the following methods would provide useful information? Study the equation for cellular respiration to have a clear sense of what is consumed and what is produced before answering the question. Select all that apply.
Measure the amount of carbon dioxide produced. Measure the amount of glucose consumed. Measure the amount of oxygen consumed.
Why is the line for net primary productivity always below that for gross primary productivity?
Net primary productivity is what remains after cellular respiration by the producers is subtracted.
Based on your understanding of reactions and gas laws, what results would you predict in an experiment that measures the rate of respiration in germinating peas at two different temperatures: 12
The rate of respiration will be higher in the peas at 22∘ C because it is closer to the optimum temperature for the enzymes of cellular respiration.
kcal food energy
b. kcal frass c. kcal cellular respiration d. kcal biomass
Predict what would happen if the respirometer were not tightly sealed.
Water will enter the vial, and it will no longer be possible to measure changes in gas pressure.
Which of the following describes the best way to graph the data to clearly compare whether older or younger leaves carry out photosynthesis more rapidly?
Which of the following describes the best way to graph the data to clearly compare whether older or younger leaves carry out photosynthesis more rapidly?
What is the reading in the pipette to the nearest 0.01 mL?
0.25 ML
Ten larvae have a total wet mass of 2.7 g and a dry mass of 0.83 g. Calculate the energy production per individual larva.
0.46 kcal
Using the experimental results, calculate the values to complete the following chart.
28.4 22.6 .032
In 1883, Theodor W. Engelmann conducted a classic experiment in which he illuminated a filament of photosynthetic algae with light that passed through a prism, thus exposing different segments of the algae to different wavelengths of light. He then added aerobic, nonphotosynthetic bacteria, and noted that the largest groups of bacteria were found in the areas illuminated by the red and blue light. Using what you know about photosynthesis and cellular respiration, which of the following would best explain the reason for the bacteria congregating in the regions with red and blue light?
More bacteria congregated in the red and blue light regions because the algae in those regions produced the most oxygen.
What is net primary productivity and how is it calculated?
Net primary productivity is a measure of the organic products of photosynthesis that accumulate after cellular respiration. You calculate net primary productivity by subtracting the energy consumed in respiration from the total energy captured in photosynthesis.
What will occur when this system is at dynamic equilibrium?
The cell will gain water until its pressure potential equals 3 bars.
Using your understanding of photosynthesis, propose the most likely reason the disks have not risen in syringe A.
There is no source of carbon dioxide.
Osmosis is a specialized type of diffusion. Which of these is specific only to osmosis?
Water molecules pass through a semipermeable membrane.
