Chemistry Review: Question Preview (ID: 31958)

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Which of the following substances comprise (make up) a protein?
a) amino acids
b) steriods
c) phospholipids
d) polysaccharides

Nucleotides make up
a) proteins
b) DNA and RNA
c) lipids (fats)
d) sugars

A bond that involves the transfer of electrons is called a(an)
a) covalent bond.
b) hydrogen bond.
c) ionic bond.
d) electronic bond

This is an energy source for the cell
a) DNA
b) ATP
c) Secondary structure of protein
d) Phospholipids

Hydrolysis reactions break down structures using water
a) True
b) False

Which is the largest sugar?
a) Disaccharides
b) Monosaccharides
c) Polysaccharides
d) None of these, because they are not sugars

Stored form of sugar in animals
a) Starch
b) Lipid
c) Glycogen
d) Protein

With this protein structure, sheets and coils pack into functional structures
a) Primary structure
b) Secondary structure
c) Tertiary structure
d) Quaternary structure

Type of compound that consists primarily of a carbon backbone and hydrogen atoms
a) Organic
b) Inorganic
c) Both of these
d) None of these

Molecules that are subunits (building blocks) of polymers
a) Monomers
b) Polymers
c) Isomers
d) Triglycerides

The particle of an atom that carries no charge is a (an)
a) ion
b) proton
c) electron
d) neutron

Substance A has a pH of 3 and Substance B has a pH of 1. Which substance is more acidic and how many times more acidic is that substance?
a) substance A, 10 times
b) substance A, 100 times
c) substance B, 10 times
d) substance B, 100 times

Most of the unique properties of water result from the fact that water molecules:
a) are held together by covalent bonds
b) are polar and form hydrogen bonds
c) easily separate from one another
d) form ionic bonds

When a pair of electrons is shared unequally between two atoms, the bond formed is called a/an:
a) hydrogen bond
b) ionic bond
c) polar covalent bond
d) nonpolar covalent bond

How is it possible for an atom to have no charge even though it is made up of protons, neutrons and electrons?
a) The number of electrons and neutrons are equal, so the charge is zero
b) The number of protons and electrons are equal, therefore the charge is equal
c) The number of protons and electrons are equal, therefore the charge is equal
d) None of these

In the shell model, the first shell can hold up to _____ electrons.
a) 2
b) 3
c) 4
d) 8

When an atom loses an electron, it becomes a:
a) negative ion
b) neutral ion
c) positive ion
d) none of these

The atomic number of an element is based on the:
a) number of protons in its nucleus.
b) number of electrons.
c) number of neutrons in its nucleus.
d) mass of the atom.

What is the most stable number of valence electrons? Note: except for hydrogen and helium.
a) 0
b) 4
c) 8
d) 12

The substance being dissolved in solutions is known as the
a) acid
b) solvent
c) solute
d) suspension

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