TEAS Practice Test: Video 8 Answers (25 Questions) — Questions and Answers

Question 1: Which part of the brain is primarily responsible for emotion, memory formation, and the 'fight-or-flight' response?

Brainstem only
Cerebral cortex
Cerebellum
Limbic system (Correct answer)

Correct answer: Limbic system

The limbic system — including the amygdala and hippocampus — processes emotions, forms memories, and triggers the fight-or-flight response.

Question 2: The mitral (bicuspid) valve is located between which two heart chambers?

Left ventricle and aorta
Right ventricle and pulmonary artery
Right atrium and right ventricle
Left atrium and left ventricle (Correct answer)

Correct answer: Left atrium and left ventricle

The mitral valve sits between the left atrium and left ventricle, preventing backflow when the ventricle contracts.

Question 3: Synovial fluid is found in:

The central canal of long bones
Lymph nodes
The pleural cavity
Freely movable (diarthrotic) joints (Correct answer)

Correct answer: Freely movable (diarthrotic) joints

Synovial fluid is secreted by the synovial membrane and found in freely movable (synovial/diarthrotic) joints, lubricating the joint and nourishing articular cartilage.

Question 4: Erythrocytes (red blood cells) are produced in the:

Red bone marrow (Correct answer)
Thymus
Spleen
Liver

Correct answer: Red bone marrow

Red blood cells are produced through erythropoiesis in the red bone marrow, stimulated by the hormone erythropoietin from the kidneys.

Question 5: Which part of the brain is responsible for coordinating voluntary movements and balance?

Cerebellum (Correct answer)
Thalamus
Medulla oblongata
Cerebrum

Correct answer: Cerebellum

The cerebellum coordinates smooth voluntary movements, balance, and fine motor control.

Question 6: What is the pH of a neutral solution at 25°C?

14
10
7 (Correct answer)
0

Correct answer: 7

A neutral solution has a pH of 7, where hydrogen and hydroxide ion concentrations are equal.

Question 7: When a patient receives an IV solution of normal saline (0.9% NaCl), which type of solution is this relative to normal blood plasma?

Isotonic solution (Correct answer)
Hypertonic solution
Hypotonic solution
Supersaturated solution

Correct answer: Isotonic solution

Normal saline (0.9% NaCl) is isotonic to blood plasma — it has the same solute concentration as blood, preventing osmotic shifts in red blood cells.

Question 8: Which of the following molecules is non-polar?

Hydrogen chloride (HCl)
Carbon dioxide (CO₂) (Correct answer)
Ammonia (NH₃)
Water (H₂O)

Correct answer: Carbon dioxide (CO₂)

CO₂ is a linear molecule with two equal and opposite C=O dipoles that cancel out, resulting in a net dipole moment of zero — making it nonpolar overall.

Question 9: Which of the following best describes an acid according to the Brønsted-Lowry definition?

A substance that accepts protons (H⁺)
A substance that accepts electrons
A substance that donates protons (H⁺) (Correct answer)
A substance that donates hydroxide ions (OH⁻)

Correct answer: A substance that donates protons (H⁺)

In the Brønsted-Lowry theory, an acid is a proton (H⁺) donor — it releases H⁺ ions in solution.

Question 10: What is the pH of a neutral solution at 25°C?

7 (Correct answer)
5
0
14

Correct answer: 7

A neutral solution has a pH of 7, where the concentration of hydrogen ions (H⁺) equals the concentration of hydroxide ions (OH⁻).

Question 11: Identify the sentence with correct subject-verb agreement.

The list of supplies are long.
Neither the doctor nor the patients were ready. (Correct answer)
Each of the students have a book.
The group of nurses are meeting today.

Correct answer: Neither the doctor nor the patients were ready.

With 'neither/nor,' the verb agrees with the nearer subject, 'patients.'

Question 12: Which option correctly identifies the indirect object in the sentence: 'The pharmacist gave the patient a medication guide.'?

pharmacist
patient (Correct answer)
medication guide
gave

Correct answer: patient

The indirect object is 'patient' — it answers 'to whom' or 'for whom' the action was done. 'Medication guide' is the direct object.

Question 13: Which sentence uses the subjunctive mood correctly?

If I am the head nurse, I will change the protocol.
If I was the head nurse, I would change the protocol.
If I were the head nurse, I would change the protocol. (Correct answer)
If I be the head nurse, I would change the protocol.

Correct answer: If I were the head nurse, I would change the protocol.

The subjunctive mood uses 'were' (not 'was') for hypothetical or contrary-to-fact conditions. Since the speaker is not the head nurse, 'were' is correct.

Question 14: Which sentence correctly uses 'who' versus 'whom'?

Who did the supervisor hire?
The nurse whom was on duty called the doctor.
Whom gave the patient the medication?
The nurse who was on duty called the doctor. (Correct answer)

Correct answer: The nurse who was on duty called the doctor.

'Who' is used as a subject pronoun. In option C, 'who was on duty' modifies 'nurse' — 'who' is the subject of 'was on duty,' so 'who' is correct.

Question 15: Which sentence correctly uses 'who' versus 'whom'?

Whom is calling?
Who did you give it to?
Whom went to the clinic?
To whom did you give the report? (Correct answer)

Correct answer: To whom did you give the report?

'Whom' is the object of the preposition 'to' in this sentence.

Question 16: Which fraction is NOT equivalent to 4/6?

12/18
8/12
6/10 (Correct answer)
2/3

Correct answer: 6/10

6/10 simplifies to 3/5, not 2/3, so it is not equivalent to 4/6.

Question 17: Express 0.00045 in scientific notation.

4.5 × 10⁴
0.45 × 10⁻³
4.5 × 10⁻⁴ (Correct answer)
45 × 10⁻⁵

Correct answer: 4.5 × 10⁻⁴

Move the decimal 4 places right to get 4.5, so the exponent is −4: 4.5 × 10⁻⁴.

Question 18: Which of the following numbers is prime?

91
49
51
37 (Correct answer)

Correct answer: 37

37 has no divisors other than 1 and itself; 51 = 3×17, 49 = 7×7, 91 = 7×13.

Question 19: What is the greatest common factor (GCF) of 36 and 48?

6
12 (Correct answer)
18
24

Correct answer: 12

Factors of 36: 1,2,3,4,6,9,12,18,36; factors of 48 include 12; the greatest shared factor is 12.

Question 20: If a number is increased by 40% and then decreased by 40%, what is the net percentage change?

−20% decrease
0% change
−4% decrease
−16% decrease (Correct answer)

Correct answer: −16% decrease

Multiplying by 1.40 then 0.60 gives 0.84, which is a 16% decrease from the original.

Question 21: Solve for x: 4x - 3 = 17

x = 3
x = 5 (Correct answer)
x = 7
x = 4

Correct answer: x = 5

Add 3 to both sides to get 4x = 20, then divide both sides by 4 to find x = 5.

Question 22: If 3 nurses can care for 9 patients, how many patients can 7 nurses care for at the same ratio?

21 (Correct answer)
18
24
27

Correct answer: 21

The ratio is 3 nurses per 9 patients, or 1 nurse per 3 patients. Multiply 7 nurses × 3 patients = 21 patients.

Question 23: A patient takes 2 tablets twice daily for 7 days. How many tablets are needed in total?

35
21
14
28 (Correct answer)

Correct answer: 28

Multiply doses per day by tablets per dose by number of days: 2 doses × 2 tablets × 7 days = 28 tablets.

Question 24: A patient receives 500 mL of IV fluid over 4 hours. How many mL per hour is being administered?

100 mL/hr
150 mL/hr
200 mL/hr
125 mL/hr (Correct answer)

Correct answer: 125 mL/hr

Divide the total volume by the total time: 500 mL ÷ 4 hours = 125 mL per hour.

Question 25: Which of the following fractions is equivalent to 0.4?

2/5 (Correct answer)
1/4
4/9
3/8

Correct answer: 2/5

0.4 = 4/10, which simplifies to 2/5 by dividing numerator and denominator by 2.

TEAS Practice Test: Video 8 Answers (25 Questions)

Which part of the brain is primarily responsible for emotion, memory formation, and the 'fight-or-flight' response?

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These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

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