TEAS Practice Test: Video 3 Answers (25 Questions) — Questions and Answers

Question 1: Which molecule carries amino acids to the ribosome during translation?

mRNA
rRNA
tRNA (Correct answer)
snRNA

Correct answer: tRNA

Transfer RNA (tRNA) has an anticodon that matches mRNA codons and carries the corresponding amino acid to the ribosome for incorporation into the growing protein.

Question 2: A trait that is masked when a dominant allele is present is described as what?

Codominant
Recessive (Correct answer)
Polygenic
Homozygous

Correct answer: Recessive

A recessive trait is expressed only when no dominant allele is present.

Question 3: In a typical food chain, organisms that produce their own food using sunlight are called what?

Decomposers
Primary consumers
Producers (Correct answer)
Carnivores

Correct answer: Producers

Producers, such as plants, make their own food through photosynthesis.

Question 4: Which organ system is primarily responsible for transporting nutrients and oxygen throughout the body?

Nervous
Circulatory (Correct answer)
Respiratory
Digestive

Correct answer: Circulatory

The circulatory system transports oxygen, nutrients, and wastes via blood.

Question 5: The diffusion of molecules from an area of high concentration to low concentration is called what?

Active transport
Passive diffusion (Correct answer)
Endocytosis
Phagocytosis

Correct answer: Passive diffusion

Passive diffusion moves molecules down their concentration gradient without energy.

Question 6: Which hormone is produced by the adrenal medulla in response to stress?

Testosterone
Cortisol
Aldosterone
Epinephrine (adrenaline) (Correct answer)

Correct answer: Epinephrine (adrenaline)

The adrenal medulla releases epinephrine (adrenaline) and norepinephrine as part of the 'fight-or-flight' stress response.

Question 7: The functional unit of skeletal muscle that generates contraction is the:

Motor unit
Sarcomere (Correct answer)
Myosin filament
Neuromuscular junction

Correct answer: Sarcomere

The sarcomere is the basic contractile unit of skeletal muscle, bounded by Z-lines and containing overlapping actin and myosin filaments.

Question 8: Which gland regulates many other endocrine glands and is called the 'master gland'?

Thyroid
Pineal
Pituitary (Correct answer)
Adrenal

Correct answer: Pituitary

The pituitary gland controls other endocrine glands and is known as the master gland.

Question 9: What part of the brain controls balance and coordination?

Medulla
Cerebellum (Correct answer)
Cerebrum
Hypothalamus

Correct answer: Cerebellum

The cerebellum coordinates voluntary movements, balance, and posture.

Question 10: The hormone responsible for the 'fight-or-flight' response is primarily released by the:

Anterior pituitary
Thyroid gland
Adrenal medulla (Correct answer)
Pineal gland

Correct answer: Adrenal medulla

The adrenal medulla releases epinephrine and norepinephrine, triggering the fight-or-flight response to perceived threats.

Question 11: An author presents only the advantages of a proposal and omits any drawbacks. This approach suggests the passage is:

A balanced analysis
Persuasive and one-sided (Correct answer)
A neutral report
A factual summary

Correct answer: Persuasive and one-sided

Presenting only advantages and ignoring drawbacks marks the passage as persuasive and one-sided.

Question 12: An author writes, "Some experts believe the treatment works." The vague phrase "some experts" should make a critical reader:

Assume all experts agree
Question who the experts are and how many (Correct answer)
Accept the claim fully
Ignore the sentence

Correct answer: Question who the experts are and how many

Vague attribution should prompt a reader to ask who the experts are and how representative they are.

Question 13: A passage notes a scientist published results but refused to share her data with other researchers. A critical reader might reasonably question:

The scientist's nationality
Whether the results can be verified (Correct answer)
The length of the paper
The color of the charts

Correct answer: Whether the results can be verified

Withholding data prevents verification, which a critical reader should question.

Question 14: A passage states that sales rose after an ad campaign, but also after a competitor closed nearby. A critical reader should conclude that:

The ad campaign was definitely the cause
The cause of rising sales is uncertain (Correct answer)
The competitor's closing had no effect
Sales did not actually rise

Correct answer: The cause of rising sales is uncertain

With two possible causes present, the true reason for rising sales remains uncertain.

Question 15: An author repeatedly uses words like "shocking," "disastrous," and "alarming" to describe a policy. This word choice reveals the author's:

Neutral reporting
Use of statistics
Support for the policy
Strong negative bias (Correct answer)

Correct answer: Strong negative bias

Emotionally charged negative words reveal the author's strong bias against the policy.

Question 16: Solve for x: |x - 5| = 3

x = 2 or x = 8 (Correct answer)
x = 8 only
x = 2 only
x = -2 or x = -8

Correct answer: x = 2 or x = 8

The absolute value equation |x - 5| = 3 has two solutions: x - 5 = 3 (x = 8) or x - 5 = -3 (x = 2).

Question 17: Solve for x: x/4 + 3 = 7

x = 1
x = 4
x = 16 (Correct answer)
x = 10

Correct answer: x = 16

Subtract 3 from both sides: x/4 = 4. Multiply both sides by 4: x = 16.

Question 18: Solve for x: 3x + 7 = 22

x = 5 (Correct answer)
x = 7
x = 9
x = 3

Correct answer: x = 5

Subtract 7 from both sides: 3x = 15. Then divide both sides by 3: x = 5.

Question 19: Simplify: 4x² + 3x - 2x² + 5x - 1

2x² + 8x - 1 (Correct answer)
6x² + 8x - 1
2x² + 2x - 1
6x² + 2x + 1

Correct answer: 2x² + 8x - 1

Combine like terms: (4x² - 2x²) = 2x², (3x + 5x) = 8x, and the constant -1. Result: 2x² + 8x - 1.

Question 20: If 2/3 of a quantity is 24, what is the full quantity?

16
32
36 (Correct answer)
48

Correct answer: 36

Let n = the quantity. (2/3)n = 24. Multiply both sides by 3/2: n = 24 × (3/2) = 36.

Question 21: Identify the compound sentence.

The nurse charted the data, and the doctor reviewed it. (Correct answer)
Charting the data carefully.
After charting, she left.
The nurse charted the data.

Correct answer: The nurse charted the data, and the doctor reviewed it.

Two independent clauses joined by 'and' form a compound sentence.

Question 22: Which of the following sentences contains a misplaced modifier?

The nurse gave an injection quickly to the patient.
The nurse gave the quickly patient an injection. (Correct answer)
The nurse quickly gave the patient an injection.
The nurse gave the patient an injection quickly.

Correct answer: The nurse gave the quickly patient an injection.

In option C, 'quickly' is placed before 'patient,' implying the patient is 'quickly,' which is illogical. The adverb should modify the verb, not the noun.

Question 23: Which sentence correctly uses 'affect' and 'effect'?

The medication had no affect on the patient.
What effect did the medication affect?
Stress can affect patient recovery times. (Correct answer)
The drug effected the patient's blood pressure.

Correct answer: Stress can affect patient recovery times.

'Affect' is a verb meaning to influence or have an impact on. 'Stress can affect recovery times' correctly uses 'affect' as a verb.

Question 24: Which of the following correctly describes the difference between a phrase and a clause?

A phrase has a subject and predicate; a clause does not
Neither phrases nor clauses have subjects and predicates
Both phrases and clauses have subjects and predicates
A clause has a subject and predicate; a phrase does not (Correct answer)

Correct answer: A clause has a subject and predicate; a phrase does not

A clause contains both a subject and a predicate (verb). A phrase lacks one or both and cannot stand alone as a complete thought.

Question 25: In grammar, what is an 'antecedent'?

A verb that precedes its subject
A type of subordinating conjunction
A word that a pronoun refers back to (Correct answer)
A sentence that comes before the main clause

Correct answer: A word that a pronoun refers back to

An antecedent is the noun (or noun phrase) that a pronoun refers back to. Clear pronoun-antecedent agreement is essential for clear writing.

TEAS Practice Test: Video 3 Answers (25 Questions)

Which molecule carries amino acids to the ribosome during translation?

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