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ATI TEAS 7 · Science · TEAS 7 practice test free science

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Question 1 of 5

Which of the following is a characteristic of alkenes?

A. They have a double bond between carbon atoms.

B. They are saturated hydrocarbons.

C. They contain only single bonds.

D. They are derivatives of ammonia.

Correct Answer: They have a double bond between carbon atoms.

Question 2 of 5

When making a dilution, what do you do?

A. Add more solvent to a concentrated solution

B. Change the temperature of the solution

C. Decrease the concentration of a solution

D. All of the above

Correct Answer: Decrease the concentration of a solution

Question 3 of 5

During ejaculation, sperm travels through a tube from the testes to the urethra. What is the name of this tube?

A. Vas deferens

B. Epididymis

C. Seminal vesicle

D. Urethra

Correct Answer: Vas deferens

Question 4 of 5

How did life most likely arise on Earth?

A. From simple organic molecules in a primordial soup

B. By spontaneous generation from non-living matter

C. Through the arrival of extraterrestrial life forms

D. We still don't know for sure

Correct Answer: From simple organic molecules in a primordial soup

Question 5 of 5

Which structure in the heart is responsible for preventing the backflow of blood from the left ventricle into the left atrium?

A. Aortic valve

B. Pulmonary valve

C. Tricuspid valve

D. Mitral valve

Correct Answer: Mitral valve

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