Ice floats in water because

ice takes up more space than liquid water

Dehydration synthesis involves

anabolic type reactions, water being removed to form a bond

Proteins are the most diverse macromolecule because

they have so many different monomers

dissociation of water molecules

Contain carbon and are made in living things

Water is a polar molecule because

atoms have unequal attractions to electrons in its chemical bonds

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Biochemistry- Keystone

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Questions 89

Answers

1
Long term energy storage is what type of biochemical molecule?
Carbohydrate
Lipid
Protein
Nucleic acid
2
This is a diagram of a(n)
saturated fatty acid (lipid)
unsaturated fatty acid (lipid)
polypeptide/protein
polysaccharide
3
This type of bond occurs between water molecules and accounts for the stickiness of water.
peptide
ionic
covalent
hydrogen
4
Nucleic Acids are polymers that are made of
Nucleotides
Glycerol and Fatty Acids
Amino Acids
Monosaccharides
5
This molecule is a...
Phospholipid
Protein
Nucleic acid
Carbohydrate
6
Identify this molecule...
Protein
Glucose
Lipid
Nucleic Acid
7
Which of the following are NOT carbohydrates?
Cellulose
Glycogen and Starch
Glycerol
Sugars
8
This is a diagram of a
monosaccharide
fatty acid
disaccharide
polysaccharide
9
Hormones and antibodies are made of...
Carbohydrates
Nucleic Acids
Lipids
Proteins
10
Identify this molecule...
Nucleic Acid
Protein
Lipid
Carbohydrate
11
The reaction below is an example of...
Dehydration Synthesis
Hydrolysis
12
Carbon is important in Biology because of
its ability to bond with hydrogen
its 4 valence electrons
its ability to form ring structures
its heat capacity
13
Water acts as the universal solvent and easily dissolves
nonpolar solutes
ionic compounds
nonpolar solvents
polar solutes
14
Organic compound that prevents the cell membrane from dissolving in water.
lipid
nucleic acid
carbohydrate
protein
15
Which monomer contains an "R" group?
Amino Acids
Glycerol
Mosaccharides
Fatty Acids
16
Glycogen, Starch, and Cellulose are...
Monosaccharides
Disaccharides
Polysaccharides
17
Ice floats in water because
ice is more dense than liquid water
ice takes up more space than liquid water
hydrogen bonds break in ice
water is less dense than ice
18
Which type of lipid contains glycerol, 2 fatty acids, and a phosphate group?
Phospholipid
Triglyceride
19
Dehydration synthesis involves
anabolic type reactions
catabolic type reactions
water being removed to form a bond
water being added to form a bond
20
Cohesion and adhesion working together to move water in plants
Capillary Action
Surface Tension
High Specific Heat
Solvent
21
Proteins are the most diverse macromolecule because
they contain nitrogen
they can form covalent bonds
they have so many different monomers
they are larger than other macromolecules
22
Water exhibits surface tension because of
cohesion
adhesion
density
heat capacity
23
This is a diagram of a
polypeptide/protein
unsaturated fatty acid
saturated fatty acid
polysaccharide
24
The monomer unit of this organic compound is a simple sugar such as glucose or fructose.
carbohydrate
lipid
protein
nucleic acid
25
Plant polysaccharides include
starch and chitin
starch and cellulose
chitin and glycogen
starch and glycogen
26
Carhohydrates function in
enzymes and transport
energy and storage
storage and structure
energy and structure
27
Unsaturated fatty acids contain carbon to carbon double bonds while saturated don't.
True
False
28
pH measures the
alkalinity of acids
hydrogen bonding that occurs in water
acidity of bases
dissociation of water molecules
29
Internal balance in living things is called...
Activation energy
Dehydration synthesis
Hydrolysis
Homeostasis
30
What type of bond occurs between the H and O in this water molecule?
ionic bond
peptide bond
hydrogen bond
covalent bond
31
What is the quickest energy carb?
Monosaccharide
Polysaccharide
Disaccharide
32
Identify this molecule...
Carbohydrate
Lipid
Nucleic Acid
Protein
33
The chemicals that enter a chemical reaction are called..
monomers
products
polymers
reactants
34
Organic compound that contains the elements C - H - O - N - P
lipid
nucleic acid
carbohydrate
protein
35
Which pH represents the strongest acid?
6
3
13
8
36
Building block of muscles, tissues, bones, and skin.
proteins
carbohydrates
nucleic acids
lipids
37
Organic molecules...
Contain water
Contain carbon and are made in living things
Contain nitrogen
Are found in non-living things
38
Which of the following choices is not a polymer?
carbohydrates
nucleic acids
lipids
proteins
39
Water is a polar molecule because
its hydrogen bonds are relatively weak
atoms have unequal attractions to electrons in its chemical bonds
it contains hydrogen and oxygen
it absorbs a lot of energy with little temperature change
40
Which of the following is NOT a use of lipids in living things?
Stores energy
Compose muscle, hair, skin
Cell membranes
Insulation and cushioning
41
Lipids can be made of
Monosaccharides
Glycerol and Fatty Acids
Nucleotides
Amino Acids
42
Water resists temperature change, helping organisms maintain homeostasis. This is water's...
High Specific Heat
Surface Tension
Cohesion
Polarity
43
Which of the following are not monomers of an organic compound?
nucleotide
amino acid
simple sugar
enzyme
44
Water sticking to glass is an example of
the universal solvent
cohesion
adhesion
density
45
Biological monomers are joined together in...
Catalyzation
Dehydration synthesis
Hydrolysis
Capillary Action
46
Organic compound that provides insulation for warmth
nucleic acid
carbs
lipids
protein
47
Which organic compounds are responsible for transmitting genetic information?
proteins
nucleic acids
lipids
carbohydrates
48
Which characteristic of water allows fish to survive through the winter?
Capillary Action
density
Surface Tension
Universal solvent
49
When monomers combine to form polymers, ________________ reactions are necessary.
dehydration synthesis
endothermic
decomposition
hydrolysis
50
This molecule is a building block for...
Carbohydrates
Proteins
Nucleic Acids
Lipids
51
Water has a slight charge on each side. This makes the molecule...
Solvent
Cohesive
Adhesive
Polar
52
Since water is polar and cohesive, insects can walk across the top of it due to its...
Adhesion
Capillary action
Surface tension
High Specific Heat
53
This atom can form up to 4 bonds with other atoms creating large stable macromolecules
Oxygen
Nitrogen
Carbon
Hydrogen
54
Since water is a polar molecule it tends to stick to itself. This property is called...
Adhesion
Capillary Action
Cohesion
High Specific Heat
55
Lipids include
cellulose
glucose monomers
fats and oils
enzymes
56
The addition of a monomer to a chain of simple sugars via dehydration synthesis is
universal solvent
capillary action
hydrolysis
polymerization
57
This is a portion of a
polypeptide
saturated fatty acid
unsaturated fatty acid
polysaccharide
58
Water forms hydrogen bonds to other water molecules because
hydrogen is strongly attracted to electrons
it experiences dramatic temperature change
it has regions of slight positive or negative charge
it can attract to many nonpolar hydrophobic surfaces
59
Steroids like hormones and cholesterol belong to which macromolecule category?
Carbohydrate
Protein
Lipid
Nucleic Acids
60
Oil and Water don't mix because...
Water is polar, oil is also polar
Water is non-polar, oil is polar
Water is polar, oil is non-polar
Water is non-polar, oil is also non-polar
61
Hydrolysis is summarized as
water being added to break a bond
water being removed to form a bond
water being added to form a bond
water being removed to break a bond
62
Which macromolecule stores the most energy?
Nucleic Acids
Lipids
Proteins
Carbohydrates
63
This is a diagram of a
unsaturated fatty acid (Lipid)
polysaccharide
polypeptide/protein
saturated fatty acid (lipid)
64
This macromolecule stores genetic information.
Nucleic Acids
Proteins
Lipids
Carbohydrates
65
How many valence electrons does carbon contain?
2
4
3
1
66
Which of the following elements does protein contain that carbohydrates and lipids do not?
hydrogen
nitrogen
carbon
oxygen
67
Proteins are polymers that are made of
Nucleotides
Glycerol and Fatty Acids
Monosaccharides
Amino Acids
68
Which type of organic compound composes enzymes?
nucleic acids
proteins
carbohydrates
lipids
69
Polymers are broken down into monomers in...
Hydrolysis
Capillary Action
Polymerization
Dehydration synthesis
70
Lipids are
all of these
nonpolar
hydrophobic
not true polymers
71
Organic compounds that act as enzymes, hormones, antibodies, and form muscle, skin, & bone
carbs
nucleic acids
lipids
proteins
72
What is the energy storage carb in humans?
Glucose
Sucrose
Starch
Glycogen
73
Glucose, Fructose, and Galactose are examples of...
Monosaccharides
Polysaccharides
Disaccharides
74
Which of the following is NOT a use of proteins in living things?
Energy
Carrier molecules in the plasma membrane
Enzymes
compose muscles, skin, hair
75
The reaction below is an example of...
Dehydration Synthesis
Hydrolysis
76
Carbohydrates are polymers that are made of
Glycerol and Fatty Acids
Nucleotides
Monosaccharides
Amino Acids
77
The monomers of nucleic acids are
glucose
amino acids
glycerol and fatty acid chains
nucleotides
78
Which of the following is considered the universal solvent?
lipids
enzymes
catalysts
water
79
Polymerization is best described as
monomers breaking away from polymers
polymers joining polymers to become complex
monomers joining to form polymers
polymers joining to form monomers
80
What type of sugar does DNA contain?
Ribose
Deoxyribose
81
This molecule is part of a...
Lipid
Protein
Carbohydrate
Nucleic acid
82
Complex carbohydrates
all of these are true
are aka polysaccharides
have C, H, and O in them
have monosaccharide monomers
83
Nucleic acids are made up of this monomer
Nucleotides
Fatty acids
Saccharides
Amino acids
84
Organic compound below that is found in the nucleus of our cells
nucleic acid
lipids
carbs
protein
85
The nucleic acids
contain sulfur
include DNA and RNA
have nucleotide monomers
form via hydrolysis
86
This is a diagram of a
amino acid
polysaccharide
monosacchride
disaccharide
87
This molecule is a building block for...
Lipids
Carbohydrates
Nucleic Acids
Proteins
88
What type of bonds form between amino acids?
Ionic
Peptide
Hydrogen
89
Water sticking to other water molecules is an example of
cohesion
capillary action
adhesion
heat capacity

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