Anatomy CH 2

What form of energy is used to power nerve impulses

Electrical

Phospholipids are composed of three fatty acid chains attached to one glycerol head true or false?

False

What property of water is most closely related to the body's ability to maintain homeostasis in terms of temperature?

High heat capacity

The nucleotide chains of DNA are held together by what?

Hydrogen bonds

Which group of organic molecules includes biological catalysts?

Protein

What determines the chemical behavior of an atom?

The electrons in the valence shell

Atomic mass is equivalent to what?

The mass of the protons and the neutrons

What is found in DNA but not RNA

Thymine

What is found in the subcutaneous tissues and around organs and is the major source of stored energy in the body?

Triglycerides

What will the hydrolysis of starch produce?

glucose molecules

An example of a decomposition reaction is?

one molecule of fat is converted too three fatty acids

What might be used to treat a tumor?

radioisotope

What occurs when acid is added to a solution with a ph of 7?

the pH drops below 7.

What is aided by water's high heat capacity?

Basking in the sun

What is a characteristic of a building block of carbohydrates?

Contains several polar covalent bonds

What class of organic molecules is uracil found in?

Nucleic acid

Which chemical element is important in its gaseous form in the the body?

Oxygen

What is the organic compound that has a ready source of energy in all cells?

adenosine triphosphate