Exam 2: The Chemistry of Life

​An element is a substance whose atoms all contain the same number of neutrons.

​Fats, phospholipids, and steroids are all examples of ____________________.

​A solution with a pH of 3 is called a(n) ____.

Temperature has no effect on diffusion rate.​

Matching Match the description with the corresponding term.​ a.​acid b.​base c.​ATP d.​diffusion e.​osmosis f.​active transport g.​DNA h.​electron i.​proton j.ammonia -​combines with hydrogen ions

Matching Match the description with the corresponding term.​ a.​acid b.​base c.​ATP d.​diffusion e.​osmosis f.​active transport g.​DNA h.​electron i.​proton j.ammonia -​negatively charged part of atom

The science that deals with the elements, their compounds, and the chemical reactions that occur between elements and compounds is known as ____________________.

​Elements or molecules contributing electrons during a reaction are called ____.

Matching Match the description with the corresponding term.​ a.​acid b.​base c.​ATP d.​diffusion e.​osmosis f.​active transport g.​DNA h.​electron i.​proton j.ammonia -​requires energy to move substances to area of higher concentration

The two purine nitrogen bases are adenine and guanine.​