ATI TEAS 7 Science

Correct Answer: C

Rationale: The correct answer is C: Vitamin K. Vitamin K is essential for blood clotting as it helps in the synthesis of clotting factors. Without adequate vitamin K, the blood cannot clot properly, leading to excessive bleeding. Vitamin A (Choice A) is crucial for vision and immune function, not blood clotting. Vitamin C (Choice B) is important for collagen synthesis and immune function, not blood clotting. Vitamin D (Choice D) is essential for bone health and immune function, not blood clotting. Thus, the correct choice is Vitamin K as it plays a direct role in the blood clotting process.

Correct Answer: C

Rationale: The correct answer is C: RBC (Red Blood Cell). RBCs are biconcave discs that are round and flat without a nucleus. This unique shape allows for efficient gas exchange and flexibility to pass through narrow capillaries. Rationale: 1. Plasma (Choice A) is the liquid component of blood that carries various substances but does not have a specific shape or structure like RBCs. 2. Platelets (Choice B) are cell fragments involved in blood clotting and do not have the described characteristics of a biconcave disc without a nucleus. 3. WBCs (Choice D) are white blood cells responsible for immune responses and have a nucleus, unlike RBCs. In summary, RBCs are the only blood constituent among the choices that fits the description provided in the question.

Correct Answer: D

Rationale: The correct answer is D: Hypertension. Hypertension, or high blood pressure, can lead to blood clots and stroke by causing damage to blood vessels and increasing the risk of clot formation. Elevated blood pressure can strain the blood vessel walls, making them more prone to damage and clot formation. This can lead to blockages in blood flow to the brain, causing a stroke. Aneurysm (A) is a weakened area in a blood vessel that can rupture but not necessarily cause blood clots. Arrhythmia (B) is an irregular heartbeat that can increase the risk of stroke but is not directly related to blood clot formation. Asthma (C) is a respiratory condition that does not directly cause blood clots or stroke.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: C

Rationale: The correct answer is C: Concentration of solute. Molarity is defined as the number of moles of solute per liter of solution. This means it measures the concentration of the solute in a solution, not the volume of the solvent (A), the amount of solute (B), or the temperature of the solution (D). By dividing the moles of solute by the volume of the solution, molarity provides a quantitative measure of how much solute is dissolved in a given volume of solvent.