Multiple Choice Flashcards
(21 cards)
The same procedure was repeated with a second protein(protein Y). If the function of Y is protein processing and packaging, the most radioactivity would be found in the…
Golgi apparatus.
What is the most likely identity of protein X?
An enzyme that participates in the degradation and recycling of cell components.
In graphing the data from this experiment, the sampling time would be shown on the X-axis because…
Sampling time is the independent variable.
The fluctuation in blood pressure shown in section 1 is caused by the…
Systole-diastole cycle.
The changes in velocity of blood flow seen in section 2 are most directly influenced by which of the following?
The cross-sectional area of vessels.
Given the very low blood’s return to the heart shown in section 3, which of the following is NOT a mechanism for assisting blood’s movement?
A transpirational pull using hydrogen bonding.
Based on the data shown, changes in the light intensity resulted in changes in the rate of which of the following processes?
Photosynthesis.
The rate of oxygen production equaled the rate of oxygen consumption during which of the following time periods?
J to K.
An increase in the rate of oxygen production by algae would be accompanied by a comparable increase in the rate of production of which of the following substances?
C6H12O6
The population density at point Q indicates that…
The reproductive rate equals the death rate.
The population would be most likely to remain at the level shown at Q under which of the following conditions?
Environmental conditions do not fluctuate.
From the data presented, which of the following can correctly be concluded about crayfish?
Most digestive enzymes are found in the digestive glands.
Based on the data presented, which of the following statements regarding crayfish digestion is consistent with the data!
Little digestion occurs in the intestine.
The experiment demonstrates which of the following about the digestive system of crayfish?
Different regions of the digestive system are specialized for different functions.
Which of the following would be useful as a substrate to measure the activity of amylase in crayfish?
Starch.
Radioactive isotopes were never detected in any samples containing just soil taken during the experiment. The finding implies that the…
Isotopes were transported via vascular tissues.
Radioactively labeled starch was later added to the stump; in subsequent observations, no labeled starch molecules were ever detected in neighboring plants. Which of the following is the most logical explanation for the observation?
Starch molecules are too large to cross cell membranes.
Which of the following best describes why the disks rose to the surface faster in the more concentrated hydrogen peroxide solutions?
The higher substrate concentrations in the more concentrated solutions speeded the reaction.
Which of the following experimental designs should the students use as a control for the experiment?
Place a catalase-soaked disk in a beaker of water.
Which of the following best describes why ice was used during this experiment?
To retard the breakdown of the catalase.
If the potato solution was boiled for 10 minutes and cooled for 10 minutes before being tested, the average time for the disks to float to the surface of the hydrogen peroxide solution would be…
More than 30 seconds.
