After One Minute Without Oxygen, Brain Cells Begin to Die

question 69

Multiple Choice

After one minute without oxygen, brain cells begin to die. After three minutes, this damage is likely to cause severe neurological deficits. The dependence of brain cells on oxygen for survival indicates that these cells are ____.

• A) strict aerobes
• B) strict anaerobes
• C) facultative aerobes
• D) facultative anaerobes
• E) transitional aerobes

---

Definitions:

Strengthened

Made stronger or more effective; often refers to the enhancement of physical attributes, skills, or mental capacities.

Negative Reinforcement

A behavioral technique in which the removal of an unpleasant stimulus strengthens a behavior or makes it more likely to occur.

Extra Credit

Additional points awarded to students beyond the regular assignments and exams, often to enhance their final grade.

Make-up Exam

A test offered at a later time for students who were unable to attend the original exam due to valid reasons.