Questions: Which of the following is NOT a hormone function? A cause osteoblasts to divide increasing growth B convert fibroblasts to osteoblasts (C) alter genetic expression D increase cellular oxygen consumption

The answer is B: convert fibroblasts to osteoblasts.

Explanation for each option:

A. Cause osteoblasts to divide increasing growth - This is a function of hormones. For example, growth hormone stimulates the division and activity of osteoblasts, which are cells responsible for bone formation.

B. Convert fibroblasts to osteoblasts - This is not typically a function of hormones. The conversion of fibroblasts to osteoblasts is more related to cellular differentiation processes and specific signaling pathways, rather than direct hormonal action.

C. Alter genetic expression - This is a function of hormones. Hormones can bind to receptors and influence the transcription of specific genes, thereby altering genetic expression. For example, steroid hormones like cortisol can enter cells and bind to receptors that directly interact with DNA to regulate gene expression.

D. Increase cellular oxygen consumption - This is a function of hormones. Thyroid hormones, for example, increase the metabolic rate of cells, which in turn increases cellular oxygen consumption.

Summary: Option B is the correct answer because converting fibroblasts to osteoblasts is not a typical function of hormones, whereas the other options describe functions that hormones can perform.