the African elephant is the largest land mammal
To find the density of an object, divide the mass by the volume. To find the density of the object in your problem, use a calculator to divide 60.0 by 400.0
Diffusion is important because:
<span>a) the human cell can obtain nutrients and gases </span>
<span>b) excrete metabolic wastes </span>
<span>c) maintain a suitable pH and ionic concentration within the cell for enzyme activity. </span>
C . the square of the distance the separated them
<span>- they both deal with molecules that travel down/with a concentration gradient without using energy
- facilitated diffusion uses protein transporters to move substances across a membrane
- the process of simple diffusion occurs only in prokaryotes while facilitated diffusion is seen only in eukaryotes
- simple diffusion doesn't require energy, but facilitated diffusion requires a source of ATP
- simple diffusion can only move material in the direction of a concentration gradient, while facilitated diffusion moves materials with and against a concentration gradient</span>
