List several important functions of the plasma membrane.
Define osmosis.
Describe a general human cell and the components inside it.
Why is the cell cycle important? List and define the different phases.
Are somatic cells diploid? Are germ cells diploid?
What are tissues? List the different types and give an example of each
Answer preview
The recognition of water as an essential substance for the sustenance of life emanates from the unique structural composition that makes it a universal solvent. Its unparalleled ability to dissolve various molecules enhances its significance in the body. The human body is complex, and processes like metabolism and excretion depend on water to facilitate the transportation of nutrients and waste products.
If you have a solution with a pH of 3 and another solution with a pH of 9, what is the magnitude of the difference in acidity?
A pH value denotes the acidity or basicity of a liquid or solution. A pH reading of 7.0 indicates neutrality in that the ions are balanced. A pH of 9 indicates 2 levels of basicity, while a pH of 3 indicates 4 levels of acidity. The difference in acidity in this scenario requires basic subtraction. 4-2= 2, hence the magnitude of difference in acidity is two units on the pH scale.
