In the cell membrane model shown below, the molecules which move large molecules into and out of the cell are known as lipids

cholesterol

carbohydrates

proteins

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.