ATI TEAS 7
Chemistry
1. What is the name for the tiny particles that make up atoms?
- A. Protons
- B. Electrons
- C. Neutrons
- D. Subatomic particles
Correct answer: D
Rationale: Protons, neutrons, and electrons are all subatomic particles that make up atoms.
2. Which of the following is a condition characterized by a loss of bone density and increased risk of fractures?
- A. Osteoarthritis
- B. Rickets
- C. Osteoporosis
- D. Scoliosis
Correct answer: C
Rationale: The correct answer is C: Osteoporosis. Osteoporosis is a condition characterized by a loss of bone density, which leads to weakened bones and an increased risk of fractures. Osteoarthritis (A) is a degenerative joint disease, not a bone density issue. Rickets (B) is a disorder caused by a deficiency of vitamin D, leading to soft and weak bones, mainly seen in children. Scoliosis (D) is a condition characterized by an abnormal curvature of the spine, not directly related to bone density loss. Understanding the differences between these conditions is important for diagnosing and treating patients accurately.
3. Which orbital can hold a maximum of 8 electrons?
- A. s orbital
- B. p orbital
- C. d orbital
- D. f orbital
Correct answer: C
Rationale: d orbital - Each d orbital can hold a maximum of 2 electrons, and there are 5 d orbitals, totaling 10 possible electrons.
4. A set of temperature readings has a range of 5 degrees Celsius. What does this tell you about the data?
- A. The average temperature is 5 degrees Celsius.
- B. All temperatures are within 5 degrees of each other.
- C. The difference between the highest and lowest temperatures is 5 degrees.
- D. There are exactly 5 temperatures in the set.
Correct answer: C
Rationale: Rationale: - Option A is incorrect because the range of 5 degrees does not necessarily mean that the average temperature is 5 degrees Celsius. The average temperature could be any value within the range. - Option B is incorrect because the range of 5 degrees does not mean that all temperatures are within 5 degrees of each other. It only indicates the difference between the highest and lowest temperatures. - Option C is correct because the range of 5 degrees specifically refers to the difference between the highest and lowest temperatures in the set. This is a common definition of range in statistics. - Option D is incorrect because the range of 5 degrees does not determine the number of temperatures in the set. The set could have more or fewer than 5 temperatures.
5. Acknowledge the organ devoted to blood filtration.
- A. Liver
- B. Kidneys
- C. Spleen
- D. Pancreas
Correct answer: B
Rationale: The kidneys are the primary organs responsible for filtering blood and removing waste products, excess fluids, and toxins. They play a crucial role in maintaining the body's internal environment and regulating blood pressure.
6. Which type of symbiosis is where both organisms benefit from the interaction?
- A. Mutualism
- B. Commensalism
- C. Parasitism
- D. Predation
Correct answer: A
Rationale: Rationale: Mutualism is a type of symbiosis in which both organisms involved benefit from the interaction. This relationship is characterized by cooperation and mutual support, leading to advantages for both parties. In mutualistic relationships, each organism provides something that the other needs, resulting in a mutually beneficial outcome. Examples of mutualism include the relationship between bees and flowers (pollination) and the partnership between nitrogen-fixing bacteria and leguminous plants.
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