Monthly Archives: May 2020


Diffusion is the movement of molecules from higher to lower concentration. In osmosis, only the solvent (water) is free to move across a semipermeable membrane from higher to lower concentration.
Osmosis and diffusion are two important types of mass transport. Here are the definitions of osmosis and diffusion, examples of each process, and a look at the differences between them. Osmosis and Diffusion Definitions Osmosis – Osmosis is the movement of solvent particles (usually water) across a semipermeable membrane from […]

Osmosis vs Diffusion – Definition and Examples



Amino Acid Word Search
Amino acids are the basic building blocks of proteins and polypeptides. The 20 most common amino acids, their structures and properties are some of the first things a new biochemistry student memorizes. This amino acid word search is a fun way to acquaint yourself with these amazing molecules.

Amino Acid Word Search



The light year is a unit of length used to measure vast distances, like between galaxies.
The light year (ly) is a unit of length that is the distance light travels in a vacuum in one Earth year. One light year is approximately 9.46 trillion kilometers (9.46 x 1012 km) or 5.88 trillion miles (5.88 x 1012 mi). The light year is used to describe distances to stars without having to use very […]

What Is a Light Year? Definition and Examples


Use a graduated cylinder or narrow glass to illustrate the different density values of common liquids.
This is a table of density of common materials. Density is a measure of the amount of matter per unit of volume. This is the mass per volume of a substance. Generally, gases are less dense than liquids, which are less dense than solids. However, there are many exceptions. For […]

Table of Density of Common Materials


DNA or deoxyribonuclecic acid is a molecule that encodes genetic information.
DNA or deoxyribonucleic acid is the molecule that codes genetic make-up. Here are 20 interesting and fun facts about DNA: The genetic code in DNA consists of only four building blocks. These are the nucleotides adenine (A), guanine (G), thymine (T), and cytosine (C). The DNA molecule forms a double […]

20 DNA Facts – Fun Facts About DNA