1. In a horizontal chart, the lowest level worker is located at the

A. Leftmost box
B. Middle
C. Rightmost box
D. Bottom

Correct answer: B

Rationale: In a horizontal chart, the lowest level worker is typically positioned at the leftmost side, with higher-level workers placed to the right. This arrangement signifies hierarchy, with the top level usually being on the rightmost side. Therefore, the correct answer is B: 'Middle,' as the lowest level worker is situated towards the left of the chart, not the extreme left or right. This positioning helps visually represent the organization's structure and indicates the progression from lower to higher levels as one moves from left to right on the chart.

2. A patient's oxygen flow rate is set at 4 liters per minute. How many cubic centimeters of oxygen are delivered per minute?

A. 400 cubic centimeters
B. 4,000 cubic centimeters
C. 40,000 cubic centimeters
D. 400,000 cubic centimeters

Correct answer: B

Rationale: Remember 1 liter is equal to 1000 cubic centimeters. Multiply the flow rate in liters per minute by the conversion factor: 4 liters/minute * 1000 cmÃ‚Â³/liter = 4,000 cubic centimeters/minute.

3. How does RNA polymerase differ from DNA polymerase?

A. Both enzymes are identical in function and structure.
B. RNA polymerase does not require a primer to initiate RNA synthesis.
C. RNA polymerase can synthesize both RNA and DNA.
D. RNA polymerase can only synthesize RNA, unlike DNA polymerase.

Correct answer: B

Rationale: Rationale: A) This statement is incorrect. RNA polymerase and DNA polymerase are not identical in function and structure. They have different roles in the cell. B) This statement is correct. Unlike DNA polymerase, RNA polymerase does not require a primer to initiate RNA synthesis. RNA polymerase can start the synthesis of RNA de novo. C) This statement is incorrect. RNA polymerase is specialized for synthesizing RNA, not DNA. DNA polymerase is responsible for synthesizing DNA. D) This statement is correct. RNA polymerase can only synthesize RNA, while DNA polymerase is responsible for synthesizing DNA.

4. A pressure vessel has a cylindrical body (diameter 10cm, height 20cm) with hemispherical ends (same diameter as the cylinder). What is its total surface area?

A. 785 sq cm
B. 1130 sq cm
C. 1570 sq cm
D. 2055 sq cm

Correct answer: D

Rationale: Calculate the surface area of the cylinder (base + lateral surface) and two hemispheres. Add them all up for the total surface area.

5. The pH scale is used to indicate the concentration of:

A. Oxygen
B. Hydrogen ions
C. Salts
D. Sugar molecules

Correct answer: A

Rationale: The pH scale measures the concentration of hydrogen ions in a solution, indicating acidity or basicity.

6. What type of force allows a car to take a sharp turn while moving in a circular path?

A. Centripetal force
B. Tension force
C. Frictional force
D. Gravitational force

Correct answer: A

Rationale: Centripetal force is the force that allows an object to move in a circular path. In the case of a car taking a sharp turn, the centripetal force is directed towards the center of the circle, keeping the car moving in a curved path. Tension force is the force transmitted through a string, rope, cable, or wire when it is pulled tight by forces acting from opposite ends. Frictional force opposes the motion of an object and is not the primary force responsible for allowing a car to take a sharp turn. Gravitational force is the force of attraction between two masses and is not directly related to a car taking a sharp turn.