Consider Two Isolates, a and B

question 29

Multiple Choice

Consider two isolates, A and B. Microbe A had an LD₅₀ of 5 * 10⁴, while microbe B recorded an LD₅₀ of 5 *10⁷. Which isolate is more virulent?

• A) unable to know based on information provided
• B) microbe A
• C) microbe B
• D) They are equally virulent.
• E) The values indicate that neither one is virulent.

---

Definitions:

External Locus

Refers to an individual's belief that their success or failure is influenced by external factors beyond their control.

Locus of Control

A psychological concept referring to individuals' beliefs about the extent to which outcomes of their actions are due to internal or external factors.

Type A Personality

A personality characterized by competitiveness, high ambition, aggressiveness, impatience, and a sense of urgency, often linked to stress and health issues.

Psychoneuroimmunology

The study of how the psychological processes, nervous system, and immune system interact and affect each other.