Mass number is defined as

the sum of protons and neutrons

evenly distributed mixture of two or more substances

Water is a polar molecule because

there is an uneven dist. of electrons between O and H atoms

Changing the pH of a solution from 7.0 to 4.0

results in a 1000x increase in hydrogen ion concentration

Which statement is true?

RNA molecules are made of nucleotides

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Miller & Levine Ch. 2 #1 v.9/2019

30 termsStudBud Administration200 plays

Quiz corresponds to Ch 2 of the Prentice Hall Biology text by Miller & Levine (dragonfly edition)

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Questions 30

Answers

1
Mass number is defined as
the sum of neutrons and electrons
the sum of protons and neutrons
the sum of electrons and protons
the sum of electrons and protons
2
When salt is dissolved in water, water is the
solvent
solute
solution
reactant
3
Chemical reactions that release energy
will always absorb energy
will always explode
will not occur
often occur spontaneously
4
Water that will not stick to a newly waxed automobile is due to
capillary action
adhesion
coenzyme action
prohesion
5
A solution is a(an)
evenly distributed mixture of two or more substances
chemical reaction
combination of two or more solids
breaking of a chemical bond
6
Water is a polar molecule because
there is an uneven dist. of electrons between O atoms only
there is an uneven dist. of electrons between O and H atoms
there is an even dist. of electrons between O and H atoms
there is an uneven dist. of electrons between H atoms only
7
A monosaccharide is a
protein
carbohydrate
lipid
nucleic acid
8
Of the following what is NOT a nucleotide of nucleic acids?
Guanine
Adenine
Cytosine
Promine
9
What type of electrons are available to form bonds?
covalent
nucleus
ionic
valence
10
The study of the chemistry of living things is called
biochemistry
physical chemistry
analytical chemistry
biogeochemistry
11
In a chemical reaction, a reactant binds to an enzyme at a region known as the
product
catalyst
active site
substrate
12
Isotopes are atoms of the same element with the same number of protons and
a different number of molecules
a different number of neutrons
a different number of electrons
the same number of neutrons
13
The structure of lipids include
glycerine and fatty acids
glycerol and fatty acids
glycine and fatty acids
glycerol and lean acids
14
Which of the following is NOT a function of proteins?
build tissues such as bone and muscle
store and transmit heredity
control the rate of reactions and regulate cell processes
help to fight disease
15
A covalent bond is formed as the result of
sharing an electron pair
transferring electrons
transferring protons
sharing a proton pair
16
The monomer of nucleic acids are referred to as
Neutratides
Laurentides
Nucleotides
Electrotides
17
Ice floats on water because
water expands when it freezes
water shrinks when it freezes
of prohesion
ice has a higher density than water
18
An atom of magnesium (atomic number 12) with a mass number of 24 has how many neutrons?
12
13
11
10
19
Of the following acidic substances which is the weakest acid?
rainwater (pH 6.2)
sulfuric acid (pH 1.2)
hydrochloric acid (pH 1.0)
tomatoes (pH 4.2)
20
What term describes a substance formed by two or more elements in definite proportions?
nucleus
compound
isotope
enzyme
21
The ability of water to stick to itself is called
collation
prohesion
adhesion
cohesion
22
The space surrounding the nucleus of an atom contains
ions
electrons
neutrons
protons
23
What is the term used to describe the energy needed to get a reaction started?
chemical energy
cohesion energy
adhesion energy
activation energy
24
Changing the pH of a solution from 7.0 to 4.0
results in a 1000x decrease in hydrogen ion concentration
results in a 100x decrease in the hydrogen ion concentration
results in a 100x increase in hydrogen ion concentration
results in a 1000x increase in hydrogen ion concentration
25
What type of ion forms when an atom loses electrons?
possibly positive or negative
positive
neutral
negative
26
Which statement is true?
RNA molecules are made of nucleotides
Glycerol is made of fatty acids
Simple sugars are made of polysaccharides
Amino acids are made of proteins
27
Enzymes affect the reactions in living cells by changing the
temperature of the reaction
pH of the reaction
products of the reaction
speed of the reaction
28
Enzymes can be regulated by all of the following EXCEPT
changes in pH
changes in density
changes in temperature
other proteins
29
Which element is NOT considered essential to life?
nitrogen
carbon
helium
phosphorous
30
These biological molecules are used for long term energy storage
Carbohydrates
Lipids
Proteins
Nucleic Acids

Miller & Levine Ch. 2 #1 v.9/2019 Flashcards | StudBud