Final answer:
During metaphase of human cell mitosis, 46 chromosomes would be present at the metaphase plate, each composed of two sister chromatids.
Step-by-step explanation:
The question is asking how many replicated chromosomes would be present at the metaphase plate during mitosis in a human cell.
Human cells have 46 chromosomes, which are replicated to form 92 sister chromatids during the DNA synthesis (S) phase of interphase. During metaphase of mitosis, the sister chromatids align at the metaphase plate.
However, as sister chromatids are still joined at this stage, they are considered one chromosome. Thus, at the metaphase plate of a human cell in mitosis, there would be 46 chromosomes, each consisting of two sister chromatids.