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Graduate Biochemical Pathways Questions

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Graduate Biochemical Pathways
Which of the following best describes the chemical equation for photosynthesis?
  1. Carbon dioxide + Sugar + Energy = Oxygen + Water
  2. Oxygen + Water + Carbon dioxide = Sugar + Energy
  3. Water + Carbon dioxide + Energy = Sugar + Oxygen
  4. Oxygen + Sugar = Water + Carbon dioxide + Energy
Graduate Biochemical Pathways
Identify the principal role of cellular respiration.
  1. To convert solar energy into the chemical energy of sugars
  2. To convert kinetic energy into the chemical energy of sugars
  3. To convert the chemical energy of sugars into the chemical energy that fuels life's processes
  4. To convert the chemical energy of sugars into heat to maintain an elevated body temperature
Graduate Biochemical Pathways
Organize the following steps of the light reaction in order.
  1. Absorb sunlight, produce high-energy electron carriers, produce oxygen, split water
  2. Absorb sunlight, produce high-energy electron carriers, split water, produce oxygen
  3. Absorb sunlight, split water, produce oxygen, produce high-energy electron carriers
  4. Absorb sunlight, produce oxygen, split water, produce high-energy electron carriers
Graduate Biochemical Pathways
NADH is anaerobically produced in what pathway(s)?
  1. Glycolysis
  2. Oxidative Phosphorylation
  3. Gluconeogenesis
  4. Two of the Above
  5. All of the Above
Graduate Biochemical Pathways
Which polysaccharide consists of individual long, twisted, unbranched chains of glucose?
  1. Starch
  2. Cellulose
  3. Glycogen
  4. This does not describe a polysaccharide.
Graduate Biochemical Pathways
In a recent newspaper article promoting the eating of seaweed and seaweed products, the argument was made that doing so was a more efficient use of energy than eating animals. Why would eating seaweed be more energy efficient than eating an animal?
  1. The energy found in animal matter represents a fraction of the energy found in the plant matter eaten by the animal. It would be better to just eat the plant and skip a step.
  2. The conversion of plant matter to animal matter produces less waste than converting animal material to animal material.
  3. Plant matter contains more energy per unit volume than does animal matter.
  4. Plant matter contains more energy per unit weight than does animal matter.
Graduate Biochemical Pathways
The reaction that results in the lengthening of a polymer chain by adding an additional monomer is called a                               .
  1. hydrolysis reaction
  2. hydrogen bond
  3. dehydration synthesis reaction
  4. Van Der Waals forces
Graduate Biochemical Pathways
All living things require substantial quantities of carbon. Where do plants get the carbon they need to survive?
  1. From decaying organic matter
  2. From the air
  3. From the soil (but not water)
  4. From the water in the soil
Graduate Biochemical Pathways
Phosphorylation of Fructose 6-Phosphate is allosterically inhibited by                             .
  1. High ATP
  2. High citrate
  3. Low Fructose 2,6 Bisphosphate
  4. Two of the Above
  5. All of the Above
Graduate Biochemical Pathways
In the pathway favored by glucagon, carbon dioxide is released when                                                .
  1. Glucose 6-P ---> Fructose 6-P
  2. Isocitrate ---> a-Ketogluterate
  3. Succinyl CoA --> a-Ketogluterate
  4. 1,3 Bisphosphoglycerate ---> Glyceraldehyde 3-P
  5. None of the Above
Graduate Biochemical Pathways
What is pyruvate converted into in the mitochondria during gluconeogenesis?
  1. Citrate
  2. Malate
  3. ADP
  4. Phosphoenolpyruvate
  5. NADH
Graduate Biochemical Pathways
What is the definition of energy?
  1. The capacity to do work
  2. The movement of an object
  3. Particles moving in waves through a system
  4. The amount of order in a system
Graduate Biochemical Pathways
Choose the best explanation as to why both consumers and producers perform cellular respiration.
  1. Although they may obtain their sugars in different ways, both consumers and producers rely on cellular respiration to make ATP.
  2. Both consumers and producers perform cellular respiration to produce the sugars that will be "burned" to fuel the energy of life.
  3. Both consumers and producers perform cellular respiration to produce the oxygen necessary to sustain life.
  4. Both consumers and producers perform cellular respiration to produce the heat necessary to sustain life.
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