ATI TEAS 7
Scientific Reasoning
1. Two scientists analyze the same data set on climate change, but they reach different conclusions. What is the MOST likely reason for this difference?
- A. One scientist has more experience than the other.
- B. They used different statistical methods.
- C. They have different personal biases.
- D. One scientist has access to additional data.
Correct answer: B
Rationale: Different analysis methods can lead to different interpretations, even with the same data. Biases and experience might play a role but are less likely the primary cause.
2. The "master gland" of the endocrine system, located at the base of the brain, secretes various hormones that control other glands is the:
- A. Thyroid gland
- B. Pituitary gland
- C. Adrenal gland
- D. Pancreas
Correct answer: B
Rationale: The correct answer is B: Pituitary gland. The pituitary gland is often referred to as the "master gland" because it plays a crucial role in regulating other endocrine glands in the body. It is located at the base of the brain and secretes various hormones that control functions such as growth, metabolism, reproduction, and stress response. The thyroid gland (A) regulates metabolism, the adrenal gland (C) produces hormones involved in stress response, and the pancreas (D) is primarily responsible for regulating blood sugar levels through insulin production, but they do not serve as the master gland of the endocrine system.
3. Which word completes the sentence "He was ____ by the unexpected turn of events."
- A. elated (joyful)
- B. bewildered (confused)
- C. vindicated (justified)
- D. apathetic (uninterested)
Correct answer: B
Rationale: "Bewildered" best describes the confusion caused by the unexpected events.
4. What is the role of the appendix, a small pouch attached to the large intestine?
- A. To store waste products
- B. To produce immune cells
- C. To secrete digestive enzymes
- D. To regulate blood sugar levels
Correct answer: B
Rationale: While the exact function of the appendix is still debated, it likely houses lymphoid tissue, contributing to the immune system.
5. What is the strongest evidence for evolution?
- A. The fossil record
- B. Comparative anatomy
- C. Biogeography
- D. All of the above
Correct answer: D
Rationale: Rationale: A) The fossil record provides evidence of how organisms have changed over time, showing transitional forms and the progression of species. B) Comparative anatomy involves studying the similarities and differences in the structures of different species, which can reveal common ancestry and evolutionary relationships. C) Biogeography examines the distribution of species around the world, which can be explained by evolution and continental drift. By considering all of the above evidence together, scientists can build a comprehensive understanding of evolution and how species have changed and diversified over time.
6. What is the primary hormone released by the parathyroid glands?
- A. Insulin
- B. Calcitonin
- C. Parathyroid hormone (PTH)
- D. Thyroxine
Correct answer: C
Rationale: The primary hormone released by the parathyroid glands is Parathyroid hormone (PTH), which plays a crucial role in regulating calcium levels in the body. Insulin is produced by the pancreas to regulate blood sugar levels and is unrelated to the parathyroid glands. Calcitonin is produced by the thyroid gland and helps regulate calcium levels but is not the primary hormone released by the parathyroid glands. Thyroxine is a hormone produced by the thyroid gland that regulates metabolism and is also not released by the parathyroid glands. Therefore, the correct answer is C: Parathyroid hormone (PTH).
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