ATI TEAS Practice Science Test

Correct Answer: B

Rationale: The correct answer is B because urine is formed in the kidney during the process of fluid filling the collecting duct. This is where the final concentration and composition of urine are regulated. Before reaching the collecting duct, the initial filtration of blood occurs in the glomerulus (eliminating options C) and the fluid does not become urine until it has passed through the collecting duct (eliminating options A and D). So, the correct sequence is filtration in the glomerulus, reabsorption and secretion in the tubules, and final urine formation in the collecting duct.

Correct Answer: D

Rationale: The correct answer is D: Oxygen. 1. Oxygen has 8 electrons in total, with 2 in the first shell and 6 in the second shell, following the 2-8-8 electron configuration rule. 2. Beryllium has 4 electrons with 2 in the first shell and 2 in the second shell. 3. Carbon has 6 electrons with 2 in the first shell and 4 in the second shell. 4. Helium has 2 electrons, filling the first shell. Therefore, Oxygen is the only element among the choices that fits the description of having 2 electrons in the first shell and 6 electrons in the second shell.

Correct Answer: B

Rationale: The correct answer is B: Prone. Prone position allows access to the stomach as the patient lies on their stomach, facilitating examination or procedures on the abdominal area. In the prone position, the stomach is easily accessible for palpation or diagnostic tests. The other choices are incorrect because: A: Medial refers to the midline of the body and does not specifically provide access to the stomach. C: Superficial refers to the location near the surface and does not relate to positioning for stomach access. D: Supine refers to lying on the back, which is not ideal for direct access to the stomach.

Correct Answer: A

Rationale: The correct order of cellular respiration is Glycolysis, Acetyl-CoA, Citric Acid Cycle, Electron Transport Chain. Glycolysis occurs in the cytoplasm and breaks down glucose into pyruvate. Pyruvate is then converted to Acetyl-CoA in the mitochondria. Acetyl-CoA enters the Citric Acid Cycle (also known as Krebs Cycle) where it undergoes a series of reactions to produce energy-rich molecules. Finally, these energy carriers are used in the Electron Transport Chain to generate ATP. The other choices are incorrect because they do not follow the sequential order of these metabolic pathways.

Correct Answer: C

Rationale: Rationale: 1. Aluminum has 13 electrons. 2. Based on the electron configuration rule (2n^2), the first shell can hold 2 electrons, the second shell can hold 8 electrons, and the third shell can hold 3 electrons. 3. Therefore, in a neutral aluminum atom, electrons are typically distributed as follows: 2 in the first shell, 8 in the second shell, and 3 in the third shell. 4. Choice C correctly reflects this electron distribution, making it the correct answer. Summary: A: Incorrect because it does not follow the electron configuration rule for aluminum. B: Incorrect as it does not distribute electrons according to the electron capacity of each shell in an aluminum atom. D: Incorrect because it does not match the electron distribution based on the electron configuration rule for aluminum.