100% Free Test Prep OAT Practice Test Questions and Answers 2026

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Total 280 Questions | Updated On: May 23, 2026

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Question 1

Which of the following gives the correct order of electromagnetic radiation from the lowest frequency to the highest frequency?

A : microwaves, UHF radio waves, x-rays, visible light

B : UHF radio waves, microwaves, visible light, x-rays

C : microwaves, visible light, x-rays, UHF radio waves

D : microwaves, x-rays, visible light, UHF radio waves

Answer: B

Question 2

In a strenuously exercising muscle, NADH begins to accumulate in high concentration. Which of thefollowing metabolic process will be activated to reduce the concentration of NADH?

A : Glycolysis

B : The Krebs cycle

C : Lactic acid fermentation

D : Oxidative phosphorylation

E : Acetyl CoA synthesis

Answer: C

Question 3

In times of starvation, which of the following would NOT be expected to be seen in high quantity in the blood?

A : Glucagon

B : Ghrelin

C : Ketone bodies

D : Insulin

E : B & D

Answer: D

Question 4

Which of the following statements about electricity flowing through a circuit can be correctly derived from Ohm’s law?

A : Increasing the voltage decreases the current if the resistance remains unchanged.

B : Increasing the current and the resistance decreases the voltage

C : Increasing the current increases the voltage if the resistance is uncharged.

D : Decreasing the resistance increases the current if the voltage remains uncharged

Answer: C

Question 5

Which hormone is responsible for red blood cell production?

A : Prolactin

B : Aldosterone

C : ACTH

D : Oxytocin

E : Erythropoietin

Answer: A

Page: 1 / 56

Total 280 Questions | Updated On: May 23, 2026

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