ATI TEAS 7
ATI TEAS 7 Science Practice Test Questions
Question 1 of 5
What is the cellular function of cilia and flagella?
Correct Answer: A
Rationale: The correct answer is A: Cilia and flagella are responsible for cell movement. Cilia and flagella are specialized structures found on the surface of many types of cells. They are involved in the movement of the cell itself or in moving substances around the cell. This movement helps in various functions such as propulsion, moving fluids, and sensing the environment.
Choices B, C, and D are incorrect. Cilia and flagella are not involved in synthesizing proteins, protecting the cell from its environment, or aiding in digestion. Their primary function is related to cell movement and cellular transport.
Question 2 of 5
Mrs. Jones's class is conducting an experiment. They will substitute artificial sweetener for sugar in a cookie recipe to determine the effect on the overall color of the baked cookies. Which of the following should be included in the instructions for the experiment?
Correct Answer: D
Rationale:
To ensure a valid comparison and isolate the impact of the artificial sweetener, the experiment should maintain consistency in all factors except the sugar substitution. By keeping ingredient proportions, bake time, bake temperature, and cookie sheet material the same, any observed differences in the color of the cookies can be attributed to the artificial sweetener rather than other variables.
Choices A, B, and C introduce additional variables that could confound the results.
Choice A would alter the consistency of the recipe by adjusting the water content,
Choice B would introduce a change in baking temperature which could affect the outcome, and
Choice C suggests a change in the type of baking sheet used, potentially impacting the baking process and results.
Therefore, maintaining consistency in all other factors except for the sugar substitution is crucial for a reliable experiment.
Question 3 of 5
Fill in the blanks in the following sentence: Enzymes are ________ molecules that serve as _______ for certain biological reactions.
Correct Answer: D
Rationale: Enzymes are large molecules that act as catalysts, accelerating chemical reactions by lowering the activation energy required for the reactions to occur. In the context of biological reactions, enzymes function as catalysts, not suppressors, triggers, or targets. The use of 'large' and 'catalysts' accurately describes the nature and role of enzymes in facilitating biological processes.
Question 4 of 5
Which of the following statements accurately characterizes the relationship between genes and chromosomes?
Correct Answer: B
Rationale: The correct answer is B: Each chromosome contains multiple genes. Genes, which are segments of DNA, are located on chromosomes and carry hereditary information. Chromosomes contain many genes, indicating that genes are part of the structure of chromosomes.
Choice A is incorrect because genes do not contain chromosomes; rather, they are located on chromosomes.
Choice C is incorrect as genes and chromosomes are distinct entities with different functions.
Choice D is incorrect because genes and chromosomes are related but not in equal numbers; chromosomes contain multiple genes, but the number of genes can vary between chromosomes.
Question 5 of 5
Which of the following is NOT an element of the respiratory system?
Correct Answer: A
Rationale: The correct answer is A: Ribs. The ribs are part of the skeletal system, providing structure and protection to the thoracic cavity. The trachea, diaphragm, and alveoli are all essential components of the respiratory system. The trachea carries air to and from the lungs, the diaphragm aids in breathing by contracting and relaxing to change the volume of the thoracic cavity, and the alveoli are tiny air sacs where gas exchange occurs in the lungs.
Therefore, ribs do not play a direct role in the respiratory process and are not considered a part of the respiratory system.