The life cycle of a eukaryotic cell is called the

Immature bone cells, or osteoblasts, manufacture a protein called osteoid as well as several hormones. because of this, we would expect osteoblasts to contain numerous a) nuclei. b) ribosomes. c) lysosomes. d) golgi bodies.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Some substances but not other can cross the (blank) membrane of a cell