ATI TEAS 7
Chemistry
1. What is molarity a measure of in a solution?
- A. Volume of the solvent
- B. Amount of solute
- C. Concentration of solute
- D. Temperature of the solution
Correct answer: c
Rationale: Molarity (M) is a measure of the concentration of solute in a solution, expressed as moles of solute per liter of solution. The other choices do not accurately define molarity.
2. Julius stresses the importance of promoting ‘esprit d corps’ among the members of the unit.
- A. “Let’s work together in harmony; we need to be supportive of one anotherâ€Â
- B. “In order that we achieve the same results; we must all follow the directives of Julius and not
- C. “We will ensure that all the resources we need are available when needed.â€Â
- D. “We need to put our efforts together in order to raise the bar of excellence in the care we
Correct answer: D
Rationale: The correct answer is D because it emphasizes the idea of collective effort and striving for excellence, which aligns with promoting 'esprit de corps' - a sense of unity and camaraderie among group members. By working together and combining their efforts, the unit can enhance the quality of care they provide. This fosters a positive team spirit and encourages collaboration. The other options do not directly address the concept of 'esprit de corps' or the importance of unity and teamwork within the group.
3. What figure of speech is used in the statement "His words were a dagger to my heart"?
- A. Metonymy
- B. Simile
- C. Metaphor (Correct)
- D. Hyperbole
Correct answer: C
Rationale: The statement compares the pain of his words to a physical object, forming a metaphor.
4. Autoimmune diseases occur when the immune system mistakenly attacks healthy body tissues. What is a potential cause of autoimmune diseases?
- A. Deficiency in essential vitamins and minerals
- B. Exposure to environmental toxins
- C. Breakdown in immune cell self-tolerance mechanisms
- D. All of the above
Correct answer: C
Rationale: The correct answer is C. Autoimmune diseases are triggered by a breakdown in immune cell self-tolerance mechanisms, where the immune system fails to recognize 'self' from 'non-self' cells, leading to attacks on healthy tissues. While deficiencies in essential vitamins and minerals or exposure to environmental toxins can impact immune function, the root cause of autoimmune diseases is primarily attributed to the breakdown in self-tolerance mechanisms. This breakdown can be influenced by genetic predisposition, environmental factors, and other triggers, leading to the development of autoimmune conditions.
5. Which of the following is NOT a characteristic of a chemical reaction?
- A. Formation of new substances
- B. Release or absorption of energy
- C. Change in color
- D. Change in temperature
Correct answer: C
Rationale: While color change can be an indicator of a chemical reaction, it's not always present, and some reactions occur without a visible color change.
6. Which of the following is the main organ responsible for absorbing nutrients?
- A. Stomach
- B. Small intestine
- C. Large intestine
- D. Pancreas
Correct answer: B
Rationale: Rationale: The small intestine is the main organ responsible for absorbing nutrients from the food we eat. It is where the majority of digestion and absorption of nutrients such as carbohydrates, proteins, fats, vitamins, and minerals occurs. The inner lining of the small intestine is covered in tiny finger-like projections called villi, which increase the surface area available for nutrient absorption. The stomach plays a role in breaking down food into smaller particles, but the actual absorption of nutrients primarily takes place in the small intestine. The large intestine mainly absorbs water and electrolytes, while the pancreas produces digestive enzymes and hormones but is not primarily responsible for absorbing nutrients.
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