Which activities occur during prophase II? Check all that apply.

* DNA condenses to form chromosomes.
* Each chromosome pairs up with its mate.
* Spindle fibers form.
* Chromosomes move to the opposite end of the cell.
* The nuclear envelope disappears.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

b brown mice / white sand dunes