anp ch2 (copy)

Which of the following statements accurately describes electrons?

Two atoms that differ only in the number of neutrons they contain are known as

An ion is an atom or group of atoms that has

When elements found in column VIA of the periodic table become ions, they usually have a charge of

MgCl2 fully dissociates into Mg2+ and Cl- ions when mixed with water. Therefore, the bonds between Mg2+ and Cl- in MgCl2 can be described as

In the formation of an ionic bond between Na and Cl to form common table salt, sodium (Na) _____ an electron and chlorine (Cl) _____ an electron.

A double covalent bond involves

C6H12O6 is an example of a ______ formula.

Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _________ charged atom of another.

Chemical barriers composed of phospholipid bilayers form within biological systems because

In a water molecule, each oxygen can form up to _____ hydrogen bonds with other water molecules.

Compared to a solution with a pH of 7, a solution with a pH of 4 is

To neutralize a base, a(n) ________ must be added.

When a protein of 50 nanometers is mixed with water, the opaque result is called a(n)

Given that the mass of an oxygen atom is 16 amu and that of a hydrogen atom is 1 amu, 1 mole of water would be equal to

ATP is a nucleotide that is composed of

Like most functional groups, carboxyl groups are

A protein consists of

The first amino acid put in place when a protein is being synthesized at a ribosome is

Amino acids such as alanine contain hydrocarbons as side groups, and these amino acids engage in hydrophobic interactions with each other. Such amino acids are

An element's atomic number is determined by the number of __________ in one atom of that element.

Which of the following has the smallest mass?

Ionic bonds involve

Fatty acids in soap have a polar end and a nonpolar end. Which of the following best describes these molecules?

Water contains two hydrogen atoms bound to one oxygen atom; "H2O" is therefore water's

What is the number of covalent bonds that an atom of nitrogen can form within a molecule?

The hydrogen bonds in a sample of water result in ________ cohesion and a _____ heat of vaporization.

A technician is asked to make up a solution of physiological saline and is told that it should be a 0.9% NaCl solution using the mass/volume percent measurement of concentration.  If the technician is making 100 milliliters of solution, how much NaCl should be included?

The most common lipids in the body are

Which list contains all four types of amino acids?

When two or more polypeptide chains come together to give a protein its ultimate shape, that structure is described as the _________ structure.