BIO357 - EXAM #1 UPDATED
QUESTIONS AND CORRECT ANSWERS
LAB #1: Photosynthesis & Cellular Respiration
If you are outside a plant cell and want to see how the water molecules are split inside the
thylakoid space, how many biological membranes would you have to cross to get there? -
CORRECT ANSWER 4
LAB #1: Photosynthesis & Cellular Respiration
Your goal is to elute all the pigments contained in the chloroplasts. What do you have to
consider, when choosing from different solvents? - CORRECT ANSWER Use both a
hydrophobic and a hydrophilic solvent
LAB #1: Photosynthesis & Cellular Respiration
The chloroplasts are suspended in an isolation buffer. To be able to extract the pigments from the
chloroplasts are suspended in an isolation buffer. To be able to extract the pigments from the
chloroplasts, we have to get rid of the buffer first. What's the best way to separate the
chloroplasts from the buffer? - CORRECT ANSWER Use a centrifuge to separate the
chloroplasts
LAB #1: Photosynthesis & Cellular Respiration
What are the protein complexes in the electron transport chain? - CORRECT
ANSWER Three dimensional arrangements of proteins and other molecules
LAB #1: Photosynthesis & Cellular Respiration
What does the thylakoid membrane enclose? - CORRECT ANSWER protons
,LAB #1: Photosynthesis & Cellular Respiration
Where are the photosynthetic pigment molecules located in the chloroplasts? - CORRECT
ANSWER In a protein complex that keeps them in place
LAB #1: Photosynthesis & Cellular Respiration
Where is the light energy converted into an electron flow? - CORRECT ANSWER In the
reaction center chlorophyll
LAB #1: Photosynthesis & Cellular Respiration
Why do pigments absorb visible light molecules and others don't? - CORRECT
ANSWER Extended conjugated systems
LAB #1: Photosynthesis & Cellular Respiration
What is the difference between the two experiments? Increasing the intensity of the exercise... -
CORRECT ANSWER ...increases lactate levels and maximum oxygen consumption
LAB #1: Photosynthesis & Cellular Respiration
Why is the lactate, or lactic acid, increasing? See the graph below: - CORRECT
ANSWER When the mouse first starts exercising, the main source of ATP is the lactic acid
fermentation
LAB #1: Photosynthesis & Cellular Respiration
, How many ATP molecules are obtained from glycolysis? - CORRECT ANSWER 2 ATP
molecules
LAB #1: Photosynthesis & Cellular Respiration
According to what you have learned in the Labster Lab, what is the main difference between
aerobic and anaerobic respiration? - CORRECT ANSWER Anaerobic respiration does not
need oxygen to occur and aerobic respiration does
LAB #1: Photosynthesis & Cellular Respiration
According to your knowledge, which parameters would you use to measure the response of the
mice in your experiments? - CORRECT ANSWER Oxygen consumption, blood glucose
and lactate levels
LAB #1: Photosynthesis & Cellular Respiration
How do you think ATP molecules store energy? - CORRECT ANSWER Due to high
energy bonds between phosphate groups
LAB #1: Photosynthesis & Cellular Respiration
How many carbon atoms does the final product of glycolysis contain? - CORRECT
ANSWER 3 carbon atoms
LAB #1: Photosynthesis & Cellular Respiration
How would you study energy consumption in humans? - CORRECT ANSWER Using an
animal model
QUESTIONS AND CORRECT ANSWERS
LAB #1: Photosynthesis & Cellular Respiration
If you are outside a plant cell and want to see how the water molecules are split inside the
thylakoid space, how many biological membranes would you have to cross to get there? -
CORRECT ANSWER 4
LAB #1: Photosynthesis & Cellular Respiration
Your goal is to elute all the pigments contained in the chloroplasts. What do you have to
consider, when choosing from different solvents? - CORRECT ANSWER Use both a
hydrophobic and a hydrophilic solvent
LAB #1: Photosynthesis & Cellular Respiration
The chloroplasts are suspended in an isolation buffer. To be able to extract the pigments from the
chloroplasts are suspended in an isolation buffer. To be able to extract the pigments from the
chloroplasts, we have to get rid of the buffer first. What's the best way to separate the
chloroplasts from the buffer? - CORRECT ANSWER Use a centrifuge to separate the
chloroplasts
LAB #1: Photosynthesis & Cellular Respiration
What are the protein complexes in the electron transport chain? - CORRECT
ANSWER Three dimensional arrangements of proteins and other molecules
LAB #1: Photosynthesis & Cellular Respiration
What does the thylakoid membrane enclose? - CORRECT ANSWER protons
,LAB #1: Photosynthesis & Cellular Respiration
Where are the photosynthetic pigment molecules located in the chloroplasts? - CORRECT
ANSWER In a protein complex that keeps them in place
LAB #1: Photosynthesis & Cellular Respiration
Where is the light energy converted into an electron flow? - CORRECT ANSWER In the
reaction center chlorophyll
LAB #1: Photosynthesis & Cellular Respiration
Why do pigments absorb visible light molecules and others don't? - CORRECT
ANSWER Extended conjugated systems
LAB #1: Photosynthesis & Cellular Respiration
What is the difference between the two experiments? Increasing the intensity of the exercise... -
CORRECT ANSWER ...increases lactate levels and maximum oxygen consumption
LAB #1: Photosynthesis & Cellular Respiration
Why is the lactate, or lactic acid, increasing? See the graph below: - CORRECT
ANSWER When the mouse first starts exercising, the main source of ATP is the lactic acid
fermentation
LAB #1: Photosynthesis & Cellular Respiration
, How many ATP molecules are obtained from glycolysis? - CORRECT ANSWER 2 ATP
molecules
LAB #1: Photosynthesis & Cellular Respiration
According to what you have learned in the Labster Lab, what is the main difference between
aerobic and anaerobic respiration? - CORRECT ANSWER Anaerobic respiration does not
need oxygen to occur and aerobic respiration does
LAB #1: Photosynthesis & Cellular Respiration
According to your knowledge, which parameters would you use to measure the response of the
mice in your experiments? - CORRECT ANSWER Oxygen consumption, blood glucose
and lactate levels
LAB #1: Photosynthesis & Cellular Respiration
How do you think ATP molecules store energy? - CORRECT ANSWER Due to high
energy bonds between phosphate groups
LAB #1: Photosynthesis & Cellular Respiration
How many carbon atoms does the final product of glycolysis contain? - CORRECT
ANSWER 3 carbon atoms
LAB #1: Photosynthesis & Cellular Respiration
How would you study energy consumption in humans? - CORRECT ANSWER Using an
animal model
