ATI TEAS Practice Science Test

Correct Answer: A

Rationale: The correct answer is A: Flagellum. Cells rely on flagella for movement because flagella are whip-like structures that enable cells to propel themselves through fluid environments. Flagella are composed of microtubules, which provide structural support and enable movement through their bending and contracting motion. Microtubules alone (B) do not facilitate movement; they serve as a scaffold within cells. Pili (C) are short, hair-like structures used for attachment rather than movement. Vesicles (D) are membrane-bound sacs involved in transportation within cells, not in cell movement. Therefore, flagellum is the most suitable structure for cellular movement.

Correct Answer: D

Rationale: The correct answer is D: Bottom of the uterus. The cervix is the lower narrow end of the uterus that connects to the top of the vagina. It serves as a passage for menstrual blood to exit the body and for sperm to enter the uterus. The other choices are incorrect because the cervix is not located at the top of the uterus (A), top of the ovaries (B), or bottom of the vagina (C). Understanding the anatomical structure and function of the female reproductive system is key to selecting the correct answer.

Correct Answer: C

Rationale: The correct order of airflow in the lungs is Trachea, Bronchi, Bronchioles, Alveoli (Option C). The rationale is: 1. Air enters through the trachea. 2. Trachea branches into bronchi. 3. Bronchi further divide into bronchioles. 4. Bronchioles lead to the alveoli where gas exchange occurs. Summary: Option A is incorrect as it starts with bronchi before the trachea. Option B is incorrect as it reverses the order of bronchioles and bronchi. Option D is incorrect as it places alveoli before bronchioles and trachea before bronchi.

Correct Answer: A

Rationale: The correct answer is A: Uterus, cervix, vagina. During childbirth, the fetus travels from the uterus through the cervix and then out through the vagina. The uterus is where the fetus develops, the cervix dilates to allow passage, and the vagina is the birth canal. The other choices are incorrect because they do not follow the correct route of the fetus during childbirth. Choice B (Cervix, uterus, vagina) is incorrect as the fetus does not move from the cervix to the uterus during childbirth. Choice C (Uterus, vas deferens, vagina) is incorrect as the vas deferens is part of the male reproductive system and not involved in childbirth. Choice D (Ovary, fallopian tube, uterus) is incorrect as this represents the path of the egg during fertilization, not the route of the fetus during childbirth.

Correct Answer: B

Rationale: The correct unit to measure how far a person can run in 30 minutes is kilometers. Kilometers are commonly used to measure shorter distances, making it suitable for this scenario. Gigameters, Megameters, and Terameters are all much larger units of distance measurement, which would not be appropriate for measuring the relatively small distance a person can run in 30 minutes. Kilometers offer a reasonable scale for measuring human running distances accurately within a small range.