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ATI TEAS 7 · Science · ATI TEAS 7 science review

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

What is the process by which lighter nuclei fuse to form heavier nuclei, releasing a large amount of energy?

A. Fission

B. Fusion

C. Radioactivity

D. Chain reaction

Correct Answer: Fusion

Question 2 of 5

How are sister chromatids distinguished from homologous chromosomes in meiosis I?

A. Sister chromatids share the same centromere, while homologous chromosomes have different centromeres.

B. Sister chromatids have identical DNA sequences, while homologous chromosomes have slightly different sequences due to crossing over.

C. Sister chromatids repel each other, while homologous chromosomes attract each other during synapsis.

D. Sister chromatids separate during anaphase I, while homologous chromosomes separate during anaphase II.

Correct Answer: Sister chromatids have identical DNA sequences, while homologous chromosomes have slightly different sequences due to crossing over.

Question 3 of 5

Which of the following best describes a balanced force acting on an object?

A. The object remains at rest

B. The object moves with constant velocity

C. The object accelerates

D. The object's mass changes

Correct Answer: The object moves with constant velocity

Question 4 of 5

What is the primary function of the myelin sheath that surrounds some axons in the nervous system?

A. To initiate nerve impulses

B. To transmit sensory information

C. To speed up the transmission of nerve impulses

D. To connect neurons at synapses

Correct Answer: To speed up the transmission of nerve impulses

Question 5 of 5

Which element is found in water and is crucial for biological functions like nerve impulses and muscle contraction?

A. Sodium

B. Potassium

C. Calcium

D. Magnesium

Correct Answer: Sodium

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