AP Biology Questions with CORRECT Answers
Question:
The energy required to run the Calvin cycle reactions of photosynthesis comes from
which two substances produced during the light-dependent reactions?
Answer:
ATP and NADPH
Question:
Which of the following best describes the function of the coenzymes NAD* and FAD in
eukaryotic cellular respiration?
Answer:
They accept electrons during oxidation-reduction reactions
Question:
A sample of human blood was placed in a test tube containing a physiological saline
solution (0.9% sodium chloride). This type of solution is often used intravenously to
quickly rehydrate patients. A drop of the blood from the test tube was placed on a slide
and red blood cells (RBs) were observed under a microscope. Three possible outcomes
are diagrammed below. Which of the following best predicts which diagrammed
microscope view the laboratory worker would see and best explains why?
Answer:
View 2 because the rate of water movement into the RBCs equals the rate of water
movement out of in cell
Question:
Students in a class measured the mass of various living organisms. They then kept the
organisms in the dark for 24 hours before remeasuring them. None of the organisms
were provided with nutrients during the 24-hour period. The data are as follows. Which
of the following is the best explanation for the pattern of change in the mass of the
organisms over time?
Answer:
Cellular respiration
, Question:
A scientist determined the rate of an enzymecatalyzed reaction by measuring the
amount of product formed over time. The following curve was generated from the data
collected. What is the most likely explanation for the change in the slope of the line
between 3 and 5 minutes?
Answer:
A large amount of substrate has been consumed
Question:
Which of the following best describes why ice was used during this experiment?
Answer:
To retard the breakdown of the catalase
Question:
Bacteriophages are viruses that infect bacteria. In an experiment, bacteriophages were
labeled with either radioactive phosphorus or radioactive sulfur. The labeled
bacteriophages were incubated with bacteria for a brief amount of time and then
removed. The infected bacteria cells were found to contain significant amounts of
radioactive phosphorus but not radioactive sulfur.Based on the results of the
experiment, which of the following types of molecules did the bacteriophages most
likely inject into the bacteria cells?
Answer:
DNA
Question:
Which of the following can be used to determine the rate of enzyme-catalyzed
reactions?
Answer:
Rate of disappearance of the substrate
Question:
O.O5 mL/ min
Answer:
The following questions refer to an experiment that is set up to determine the relative
volume of O2 consumed by germinating and non germinating (dry) pea seeds at two
different temperatures. The change in volume is detected by using a respirometer over
a given period of time. The data are given below.The rate of oxygen consumption in
germinating pea seeds at 26°C is
Question:
The energy required to run the Calvin cycle reactions of photosynthesis comes from
which two substances produced during the light-dependent reactions?
Answer:
ATP and NADPH
Question:
Which of the following best describes the function of the coenzymes NAD* and FAD in
eukaryotic cellular respiration?
Answer:
They accept electrons during oxidation-reduction reactions
Question:
A sample of human blood was placed in a test tube containing a physiological saline
solution (0.9% sodium chloride). This type of solution is often used intravenously to
quickly rehydrate patients. A drop of the blood from the test tube was placed on a slide
and red blood cells (RBs) were observed under a microscope. Three possible outcomes
are diagrammed below. Which of the following best predicts which diagrammed
microscope view the laboratory worker would see and best explains why?
Answer:
View 2 because the rate of water movement into the RBCs equals the rate of water
movement out of in cell
Question:
Students in a class measured the mass of various living organisms. They then kept the
organisms in the dark for 24 hours before remeasuring them. None of the organisms
were provided with nutrients during the 24-hour period. The data are as follows. Which
of the following is the best explanation for the pattern of change in the mass of the
organisms over time?
Answer:
Cellular respiration
, Question:
A scientist determined the rate of an enzymecatalyzed reaction by measuring the
amount of product formed over time. The following curve was generated from the data
collected. What is the most likely explanation for the change in the slope of the line
between 3 and 5 minutes?
Answer:
A large amount of substrate has been consumed
Question:
Which of the following best describes why ice was used during this experiment?
Answer:
To retard the breakdown of the catalase
Question:
Bacteriophages are viruses that infect bacteria. In an experiment, bacteriophages were
labeled with either radioactive phosphorus or radioactive sulfur. The labeled
bacteriophages were incubated with bacteria for a brief amount of time and then
removed. The infected bacteria cells were found to contain significant amounts of
radioactive phosphorus but not radioactive sulfur.Based on the results of the
experiment, which of the following types of molecules did the bacteriophages most
likely inject into the bacteria cells?
Answer:
DNA
Question:
Which of the following can be used to determine the rate of enzyme-catalyzed
reactions?
Answer:
Rate of disappearance of the substrate
Question:
O.O5 mL/ min
Answer:
The following questions refer to an experiment that is set up to determine the relative
volume of O2 consumed by germinating and non germinating (dry) pea seeds at two
different temperatures. The change in volume is detected by using a respirometer over
a given period of time. The data are given below.The rate of oxygen consumption in
germinating pea seeds at 26°C is
