Which type of bond is formed when one atom donates an electron to another?

Even very simple, single-celled organisms are remarkably complex.

All lipids are soluble in water.  

A hypothesis must be:

Water is an excellent solvent for polar substances.

Biology is the science that studies:

Lipids are characterized by being

The atom is the smallest and most fundamental unit of matter that retains the properties of an element.

What is an example of complex carbohydrates?

For general reference, 1 mile of walking is equal to ______________ steps.