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Nursing Question Bank

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1265 available questions

Biology · Question 441

Which is the longest part of the human small intestine?

  1. Duodenum
  2. Jejunum
  3. Ileum
  4. Cecum
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Correct answer: C

Ileum

The ileum is the longest of the three parts of the small intestine.

Biology · Question 442

Enteropeptidase, formerly called enterokinase, activates:

  1. Trypsinogen
  2. Pepsin
  3. Amylase
  4. Lipase
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Correct answer: A

Trypsinogen

Enteropeptidase converts pancreatic trypsinogen into active trypsin.

Biology · Question 443

Ciliated pseudostratified columnar epithelium is characteristic of much of the:

  1. Trachea
  2. Alveolar air space
  3. Pleural cavity
  4. Diaphragm tendon
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Correct answer: A

Trachea

The tracheal lining uses cilia and mucus to move trapped material toward the pharynx.

Biology · Question 444

Carbon monoxide binds with especially high affinity to:

  1. Haemoglobin
  2. Albumin
  3. Fibrinogen
  4. Keratin
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Correct answer: A

Haemoglobin

Carbon monoxide forms carboxyhaemoglobin and greatly reduces oxygen transport.

Physics · Question 445

A ball is dropped from a height of 4.2 m. If no mechanical energy is lost during impact, to what height will it rebound?

  1. 12.6 m
  2. 4.2 m
  3. 8.4 m
  4. 2.1 m
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Correct answer: B

4.2 m

With no energy loss, the ball regains its original gravitational potential energy and returns to 4.2 m.

Physics · Question 446

A person travels 4 km southeast, 4 km southwest, 4 km northwest and finally 4 km northeast. How far is the person from the starting point?

  1. 0 km
  2. 12 km
  3. 8 km
  4. 4 km
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Correct answer: A

0 km

The four equal diagonal displacement vectors form a closed path, so the net displacement is zero.

Physics · Question 447

In which quadrant are sine, cosine and tangent all positive?

  1. Fourth quadrant
  2. Third quadrant
  3. Second quadrant
  4. First quadrant
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Correct answer: D

First quadrant

All three basic trigonometric functions are positive in the first quadrant.

Physics · Question 448

A force of 5 N acts entirely along the y-axis. What is its component along the x-axis?

  1. 10 N
  2. 0 N
  3. 7 N
  4. 5 N
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Correct answer: B

0 N

A vector directed along the y-axis has no x-component.

Physics · Question 449

One radian is approximately equal to:

  1. 57.3°
  2. 50.3°
  3. 45.3°
  4. 30.3°
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Correct answer: A

57.3°

One radian equals 180/π degrees, which is approximately 57.3°.

Physics · Question 450

The water surface in a tank is 15 m above a small outlet. Approximately how fast does water leave the outlet? Use g = 9.8 m/s².

  1. 17 m/s
  2. 7 m/s
  3. 27 m/s
  4. 37 m/s
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Correct answer: A

17 m/s

Torricelli’s law gives v = √(2gh) = √(2 × 9.8 × 15), approximately 17 m/s.