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AP BIO exam #3 mc questions
Terms in this set (25)
during aerobic cellular respiration, oxygen gas is consumed at the same rate as co2 gas is produced. in order to provide accurate volumetric measurements of oxygen gas consumption, the experimental setup should include which of the following?
a substance that removes co2
according to the data, the mice at 10 degrees C demonstrated greater oxygen consumption per gram of tissue than did the mice at 25 degrees C. THis is most likely explained by which of the following statements?
The mice at 10 degrees C had a higher rate of ATP production than the mice at 25 degrees C
according to the data, the crickets at 25 degrees C have greater oxygen consumption per gram of tissue than do the crickets at 10 degrees C. This trend in oxygen consumption is the opposite of that in the mice. The difference in trends in oxygen consumption among crickets and mice is due to their
mode of internal temperature regulation
experimental evidence shows that the process of glycolysis is present and virtually identical in organisms from all three domains, Archaea, Bacteria, and Eukarya. WHich of the following hypotheses could be best supported by this evidence?
glycolysis is a universal energy-releasing process and therefore suggests a common ancestor for all forms of life
The chemical reaction for photosynthesis is... If the input water is labeled with a radioactive isotope of oxygen, then the oxygen gas released as the reaction proceeds is labeled with same oxygen isotope. Which of the following is the most likely explanation?
during the light reactions of photosynthesis, water is split, removing electrons and protons, and oxygen gas is released.
The figures can best assist in answering which question?
do electron transport chains create a gradient so that ATP synthase can generate ATP molecules?
Which of the following statements best explains why oxygen is taken up more rapidly at 12 degrees C than at 20 degrees C?
at 12 degrees C a higher rate of oxygen consumption is required to maintain a high body temperature.
which of the following hypotheses is best supported by the results of this experiment?
metabolic rate per gram of tissue is higher in smaller mammals.
the experimental design allows testing of which of the following?
the effects of both temp and oxygen on germination
germination would be expected to occur first in which beaker?
#1 (the one with no treatment, addition of deoxygenated water, and no addition of mineral oil to block oxygen diffusion)
comparing results from which of the following pairs of beakers would help determine if enzymes are necessary for germination?
# 1 and 2 (the beaker with no treatment, addition of deoxygenated water, and no addition of mineral oil to block oxygen diffusion and the beaker with treatment of boiling, addition of deoxygenated water, and no addition of mineral oil to block oxygen diffusion)
enzymes with their highest activity at an alkaline (basic) pH are represented by which of the following graphs?
II only (line goes up until plateaus at pH > 7)
graphs representing enzyems sensitive to changes in pH include which of the following
I, II, and III only (because all have graphs thta are not just a straight line)
which of the following questions is most relecant to understanding the calvin cycle?
How is ATP used in the formaiton of 3- carbon carbohydrates?
what most likely causes the trends in oxygen concentration shown in the graph above
photosynthesis produces more oxygen than is consumed by respiration during the day.
Which of the following provides the best indication that light is required for the activation of electron transfer reactions in chloroplasts?
comparing the observed results for sample 2 and sample 3 (both are equal distance from lamp but one is covered in foil)
which of the following can be reasonably concluded from the experimental results?
light from a lamp can substitute for sunlight in stimulating chloroplast processes.
If an additional sample containing the chloroplast/ DCPIP solution was placed at a distance of 90 cm from the lamp, which of the following predictions would be most consistent with the experimental results>
the change in absorbance over time in the solution will be less than that of the other samples.
which of the following descriptions of photosynthesis best explains the results of the experiment?
availability of electrons for transfer to DCPIP depends on light energy
Which of the following scientific questions could be investigated using a similar experimental set up?
what wavelengths of light best activates electron transfer reactions in chloroplasts?
For living organisms, which of the following is an important consequence of the first law of thermodynamics?
the organism ultimately must obtain all of the necessary energy for life from its environment
even though plants carry on photosynthesis, plant cells still use their mitochondria for oxidation of pyruvate. When and where will this occur?
in all cells all the time
in photosynthesis, the functional product (s) of the light reactions
are ATP and NADPH
graph below shows that at certain concentrations ATP inhibits the enzyme, whereas AMP activates it. When the concentration of fructose-6-phosphate is 0.5 mM, how many times more active is PFK in cells with 1 mM ATP + 0.1 mM AMP than in cells with 5 mM ATP?
10 times more active
based on the data above, calculte the avg rate of increasein oxygen consumption for animals acclimated to 5 degrees C as the temp increases from 10 degrees C to 30 degrees C
5.5 mL Oxygen
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