Question

1. For the cell to survive it must be able to take in elements and at the same time rid of some others. Discuss how the movement of substance throughout the cell happen and contribute to its maintenance/survival.

Answer 1

Cell is the functional unit of life . Many cells get together to form tissues then many tissues get together to form organs. For the cells to survive it must be able to take in elements and at the same time rid of some others . All this process occur by difference in the concentration gradient . The cell takes the waste in the cell membrane to separate it from the rest of the cell , a membrane bubble will form around the waste then the enzymes in it will break the larger waste then it will take the waste out through the membranes

Diffusion

The spreading of something widely

Osmosis

A process which liquid mostly pass through the semipermeable membrane.

The principles by which intake of vital nutrients and output of waste products occur by the following principles :-

Passive transport :-

- osmosis

- diffusion

- facilitated diffusion

- ultrafiltration

Active transport :-

- use of ATP