A&P- Chemical Basis of LIfe -Test Review

*Which of the following groups of elements accounts for more than 96% of the human body by weight?

*An organic compound always contains

*The atoms of different elements have

*In covalent bond

When forming a bond, an atom that has 3 electrons in its second shell and a filled first shell will

*Isotopes of an element have

*A person has alkalosis if the blood pH

A substance that has a name ending in -ase and plays a vital role in metabolism is most likely a(n)

*Water is an example of a compound

*The first electron shell of an atom can hold a maximum of

*The formula H2O refers to

*Proteins are complex molecules composed of

*The atoms of the isotope of a particular element vary in the number of

The subatomic particle that does not have an electrical charge is a (n) ________________

Amino acids are building blocks for _______________

Which of the following is an organic compound?

An atom with 10 protons and which has lost 2 electrons is electrically neutral.

*The simplest form of carbohydrates is

*The number of protons in an atom of an element always equals its atomic number

*An element needed to build bones is:

*The atomic weight of an element whose atoms contain 8 protons, 8 electrons, and 8 neutrons is

*Which of the following substances is an element?

The atomic number of phosphorus is 15. How many protons does phosphorus have?

*The symbol Na+ represents a sodium atom that has lost an electron

*The parts of an atom that carry single negative electrical charges are called

*When atoms form chemical bonds, the subatomic particles that directly interact are the _______________

*The chemical category that includes fats and cholesterol is

When cations and anions meet, they

*A chemical bond formed by the sharing of electrons is described as

*The midpoint of the pH scale is __________.

*Which of the following is the most abundant inorganic substance in the body?

A water solution that contains equal number of hydrogen atoms ions and hydroxide ions is

*A hydrophobic substance

Chemistry is important to the study of physiology because

*Chemically inert atoms always have their outermost electron shell full

DNA and RNA are nucleic acids

Electrolytes that release hydrogen ions ( higher hydrogen concentration) in water are called

*The _________uses iodine in a synthesis reaction.

*In an ionic bond

Which of the following is not organic?

atomic radiation is useful for treating cancer because

The subunit of an element is

The building blocks of nucleic acids are

Apricots have a pH of 3.8, therefore they are ______________

All enzymes are

The element that makes up the greatest percentage by weight in the body is