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ATI TEAS 7 · Science · Science TEAS Practice Test

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

What is the primary function of the endocrine system?

A. Heartbeat

B. Respiration

C. Electrolyte and water balance

D. Homeostasis

Correct Answer: Homeostasis

Question 2 of 5

Which type of cell secretes antibodies?

A. Bacterial cells

B. Viral cells

C. Lymph cells

D. Plasma cells

Correct Answer: Plasma cells

Question 3 of 5

Which of the following nucleobases does not exist in RNA?

A. Uracil

B. Thymine

C. Cytosine

D. Guanine

Correct Answer: Thymine

Question 4 of 5

Where does the majority of nutrient absorption occur?

A. Mouth

B. Stomach

C. Small intestine

D. Large intestine

Correct Answer: Small intestine

Question 5 of 5

What is the smallest unit that can encode for a trait?

A. A codon

B. A gene

C. A nucleotide

D. A chromosome

Correct Answer: A gene

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