ATI TEAS 7
Metric Conversions for Nursing
1. Convert 0.875 to a fraction,
- A. 7\8
- B. 8\7
- C. 3\4
- D. 9\10
Correct answer: A
Rationale: To convert 0.875 to a fraction, express it as 875\10000. Simplifying this fraction by dividing both the numerator and denominator by 125 results in 7\80.
2. 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?
- A. When preparing the batch that includes artificial sweetener, 20% more water should be included.
- B. The bake temperature should be decreased from 425°F to 400°F.
- C. The batch with artificial sweetener should be baked on a stainless steel sheet.
- D. Ingredient proportions, bake time, bake temperature, and cookie sheet material should all be kept the same between the two batches.
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.
3. Which type of joint connects the bones of the skull?
- A. Synovial
- B. Fibrous
- C. Cartilaginous
- D. Ball-and-socket
Correct answer: B
Rationale: Fibrous joints connect the bones of the skull. These joints are immovable or provide very limited movement, providing stability and protection to the brain. Synovial joints (Choice A) are found in the limbs and allow for a wide range of movements. Cartilaginous joints (Choice C) are connected by cartilage and allow limited movement. Ball-and-socket joints (Choice D) allow for a wide range of motion, such as the hip and shoulder joints, but they do not connect the bones of the skull.
4. Which of the following could accurately subtitle this passage?
- A. The start of the revolution
- B. American march from the sea
- C. The full armies face off
- D. In the state of Massachusetts
Correct answer: A
Rationale: The passage outlines significant events in Clara Barton's life, starting from her birth in Massachusetts, moving to Washington D.C., her humanitarian work during the Civil War, and her later efforts in Europe and with the Red Cross. The most accurate subtitle for this passage would be 'The start of the revolution,' as it refers to the beginning and progression of Barton's revolutionary work in humanitarian aid and establishing the American branch of the International Red Cross Organization. The other choices are not suitable subtitles as they do not encompass the breadth of Barton's impactful life events described in the passage.
5. What type of bond connects sugar and phosphate in DNA?
- A. Hydrogen
- B. Ionic
- C. Covalent
- D. Overt
Correct answer: C
Rationale: The correct answer is Covalent (C). In DNA, a covalent bond connects sugar and phosphate molecules. This bond involves the sharing of electron pairs between the atoms, providing stability to the DNA structure. Hydrogen bonds are important in DNA structure but are not the primary bond connecting sugar and phosphate. Ionic bonds involve the transfer of electrons, and 'overt' is not a term related to the bond connecting sugar and phosphate in DNA.
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