What Tool or Technique Used by Ivanowski and Beijerinck While

question 20

Multiple Choice

What tool or technique used by Ivanowski and Beijerinck while studying diseased tobacco plants enabled them to determine that the disease was caused by an agent significantly smaller than bacteria?

• A)scanning electron microscopy that enabled them to view the virus the tobacco mosaic virus
• B)transmission electron microscopy that allowed them to view the tobacco mosaic virus
• C)porcelain filters that trapped bacteria but allowed passage of the virus
• D)cell culture that enabled cultivation of the virus

Identify the appropriate lubricants for different types of fifth wheels.

Understand the applications and configurations of various fifth wheel types (rigid, semi-oscillating, fully-oscillating, etc.).

Recognize the maintenance schedules for fifth wheels based on OEM recommendations.

Comprehend the components and their functions in the coupling process of a tractor and trailer.

---

Definitions:

Psychological Disorders

Mental processes and/or behavior patterns that cause emotional distress and/or substantial impairment in functioning.

Natural Tendency

An innate or inherent inclination or predisposition towards a particular behavior, action, or thought pattern.

Person-Centered Therapy

A nondirective, humanistic therapy developed by Carl Rogers, in which the therapist creates an accepting climate and shows empathy, freeing clients to be themselves and releasing their natural tendency toward self-actualization.

Insight

The sudden realization of the relationship between elements in a problem situation, which makes the solution apparent.