The circulatory system transports substances between the exchange surface and cells. It delivers oxygen and glucose to the tissues for respiration, which is the release of energy to cells.

Four years ago, lawmakers passed a bill requiring all Oklahoma public schools to offer at least four Advanced Placement ...

The proton gradients that power respiration are as universal as the genetic code itself, giving an insight into the origin of life and the singular origin of complexity. Why do virtually all cells ...

A step-by-step process includes an efficient warm-up, maintaining your pace, and breathing through both your nose and mouth.

Researchers found that Toxoplasma gondii increased the host cell’s metabolic activity, offering insights into potential ...

In this case, certain free-living bacteria live inside host bacteria and carry out a task for which the hosts are not well suited: cellular respiration. The engulfed bacteria, now called ...

These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose. Then, via respiration processes, cells use oxygen and glucose to synthesize energy ...

Between 1.8 billion and 800 million years ago, earthly life was in the doldrums. During this period, called the "boring ...

In an incredible feat that redefines biological boundaries, scientists have successfully engineered animal cells capable of ...

A century after Otto Warburg first described the phenomenon where cancer cells undergo glycolysis instead of oxygen ...

There are many plants with toxicity risk to livestock, and prussic acid concerns rank as some of the most common of which to ...