Home » Biology (page 9)


What is Facilitated Diffusion Simplified

Facilitated diffusion can be simplified if you think of its definition as a form of passive transport. Being a form of passive transport, facilitated diffusion can transport molecules from a high concentration to a low concentration using membrane proteins (without using energy). The name  “facilitated”  tells you that this diffusion process will have some help moving molecules across the membrane. This is achieved with …

Read More »

What is Diffusion Simplified

Diffusion can be simplified as the process of chemical substances moving across a membrane without energy or...

Read More »

What is Passive Transport Simplified


Passive Transport refers to the movement of chemical substances across a membrane without the use of energy. We usually refer to passive transport as the movement of molecules across the membrane of cells. For relatively small molecules, they can freely travel through the membrane in a process known as diffusion. Larger molecules can still travel across the membrane but they must bind to special transport proteins …

Read More »

Glycogen Metabolism Simplified

Glycogen metabolism can be simplified if you can break this large storage molecule into the smaller molecules it is made of.

Read More »

Draw the Structure of a Fructose Molecule

Being able to draw fructose is an important step to understanding important chemical reactions inside of living cells such as Glycolysis.

Read More »

Draw the Structure of a Glucose Molecule

Glucose Overview Being able to draw glucose is an important step to understanding important chemical reactions inside of living cells such as Glycolysis or Gluconeogenesis. Glucose is also an important source of energy for cells in many different organisms that range from bacteria to mammals. Being able to easily draw glucose is a fundamental step to learning higher level chemistry or biology. …

Read More »

Difference between Hypertonic, Hypotonic, Isotonic Solutions

Memorizing the definition of hypertonic, hypotonic, and isotonic solutions is not necessary when you understand the root words that make up these descriptive words. The difference between the words hypertonic, hypotonic, and isotonic describe the tonicity. Tonicity is the difference in water concentration of two solutions separated by a semipermeable membrane. Knowing the tonicity of solutions will tell you which direction water will diffuse. …

Read More »