ATI TEAS 7
ATI TEAS Practice Science Test
1. What is the temperature of 35°C in Kelvin?
- A. 220
- B. 238
- C. 308
- D. 345
Correct answer: C
Rationale: To convert Celsius to Kelvin, add 273.15 to the Celsius temperature. In this case, 35°C + 273.15 = 308.15 K. Therefore, the correct answer is 308 K. Choice A (220) is incorrect as it does not account for adding 273.15 to convert to Kelvin. Choice B (238) is incorrect as it is not the result of adding 273.15 to 35°C. Choice D (345) is incorrect as it is not the correct conversion of 35°C to Kelvin.
2. Which type of nutrient requires the most complex and lengthy digestion process?
- A. Carbohydrates
- B. Proteins
- C. Fats
- D. Vitamins
Correct answer: B
Rationale: Proteins require the most complex and lengthy digestion process compared to the other nutrient types provided. When proteins are consumed, they undergo a process where they need to be broken down into amino acids, which are essential building blocks of proteins. This intricate digestion process begins in the stomach aided by stomach acid and enzymes, proceeds to the small intestine where further enzymes break down proteins into amino acids, and concludes with the absorption of these amino acids into the bloodstream for various bodily functions. Carbohydrates and fats also require digestion, but the process for breaking down proteins into amino acids is notably more intricate and time-consuming. In contrast, vitamins do not require digestion in the same manner as proteins, carbohydrates, and fats because they are already in a form that can be readily absorbed by the body.
3. Which of the following is an example of a commensal relationship between a microorganism and a human?
- A. Salmonella causing food poisoning
- B. taphylococcus aureus causing skin infections
- C. coli living in the gut
- D. Rabies virus causing neurological disease
Correct answer: C
Rationale: A commensal relationship is a type of symbiotic relationship in which one organism benefits, while the other is neither harmed nor benefited. In this case, E. coli living in the gut is an example of a commensal relationship because it can benefit from the environment in the gut without causing harm to the human host. Option A, Salmonella causing food poisoning, is an example of a pathogenic relationship where the microorganism causes harm to the host. Option B, Staphylococcus aureus causing skin infections, is also an example of a pathogenic relationship where the microorganism causes harm to the host. Option D, Rabies virus causing neurological disease, is another example of a pathogenic relationship where the microorganism causes harm to the host.
4. What is the primary cause of acne vulgaris, commonly known as acne?
- A. Dry skin
- B. Clogged pores and excess oil production
- C. Bacterial infection alone
- D. Vitamin deficiency
Correct answer: B
Rationale: The primary cause of acne vulgaris is clogged pores and excess oil production. Acne develops when hair follicles become clogged with oil and dead skin cells, creating an environment for bacteria to thrive, leading to inflammation and acne breakouts. While dry skin, bacterial infection alone, and vitamin deficiency can contribute to acne, they are not the main underlying cause. Therefore, the correct answer is clogged pores and excess oil production, as they form the basis for the development of acne vulgaris.
5. Following successful heart transplant surgery, the patient's body will need to take medications to:
- A. Suppress the immune system and prevent rejection of the new heart.
- B. Reduce overall blood pressure.
- C. Dissolve any remaining blood clots.
- D. Stimulate the growth of new heart tissue.
Correct answer: A
Rationale: After heart transplant surgery, the patient's body will need to take medications to suppress the immune system and prevent rejection of the new heart. This is essential to ensure that the body does not identify the transplanted heart as a foreign entity and mount an immune response against it, which could lead to transplant rejection and failure. Choices B, C, and D are incorrect because post-heart transplant medications primarily focus on preventing rejection by suppressing the immune system, rather than reducing blood pressure, dissolving blood clots, or stimulating the growth of new heart tissue.
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