Which event occurs during prophase?

the cytoplasm divides.
the sister chromatids separate.
the spindle fibers break down.
the spindle fibers form.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.

Si units are the modern form of the