Multiple Choice
An underexpression or knockout of the hormone leptin would most likely lead to which of the following outcomes?
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10. Cell Signaling
Introduction to Cell Signaling
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Which of the following is least likely to play a direct role in the growth and maintenance of healthy bones?
A
Epidermal growth factor (EGF) signaling
B
Parathyroid hormone signaling
C
Insulin signaling
D
Vitamin D signaling
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Understand the role of each signaling molecule or factor mentioned in the options and how they contribute to bone growth and maintenance.
Epidermal growth factor (EGF) signaling: Research its primary function, which is typically associated with skin and epithelial tissue repair, and determine if it has a direct role in bone health.
Parathyroid hormone signaling: Recognize its importance in regulating calcium levels in the blood and its direct impact on bone remodeling and maintenance.
Insulin signaling: Investigate its role in metabolism and how it indirectly supports bone health by influencing energy availability and cellular functions.
Vitamin D signaling: Identify its critical role in calcium absorption and bone mineralization, which are essential for healthy bone growth and maintenance.
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