Heart Muscle Is Damaged After a Heart Attack (MI) Because

question 6

Multiple Choice

Heart muscle is damaged after a heart attack (MI) because blood flow to the heart is stopped. A researcher injected cyanobacteria into the damaged hearts of test animals that has been given MIs. The animals' conditions improved after the procedure, but not significantly. The researcher repeated the experiment, this time illuminating the cyanobacteria with high intensity light after injecting the cells into the damaged hearts. Now the animals did much better, recovering well from their heart attacks. Which of the following explains this outcome?

• A) Cyanobacteria have the capacity to carry blood. Illuminating the cells increases their ability to transport blood into the damage heart muscle.
• B) Cyanobacteria produce alcohol through photosynthesis, and this stimulates the heart cells. Illuminating the bacteria increases this reaction.
• C) Illuminated cyanobacteria multiply rapidly; the expanding mass of cells dilates blood vessels to the heart, bringing more nutrients and oxygen to the heart cells.
• D) Illuminated cyanobacteria produce carbon dioxide by photosynthesis. Illumination increases the amount of released CO₂ that the heart cells then use for anaerobic respiration.
• E) Cyanobacteria produce oxygen by photosynthesis. Illuminating the cells increases amount of O₂ released that is then used by heart cells for aerobic respiration.

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Definitions:

Underlying Conflicts

Hidden or unresolved tensions and disagreements that can impact behavior and psychological health.

Learned Behaviors

Actions or reactions acquired through experience or conditioning, which do not rely on innate or inborn instincts.

Phobias

Excessive and irrational fears of specific objects, situations, or activities that lead to avoidance behavior.

Free Will

The philosophical doctrine that humans have the capacity to make choices free from certain kinds of constraints.