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Unit 2 Test Review Biochemistry
Which of the major macromolecules is polar?
What are bonds made of?
Unit 2 Test Review Biochemistry
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Biology Biochemistry basics
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Answers
1
What are bonds made of?
valence electrons
molecules
compounds
peptides
2
Which of the major macromolecules is polar?
carbohydrate
protein
nucleic acid
lipid
3
In chocolate milk, the powdered chocolate would be the
Soylent Green
Solvent
Solution
Solute
4
Polypeptides with multiple subunits show what level of structure?
primary
secondary
quarternary
tertiary
5
Oils and waxes are examples of
proteins
lipids
carbohydrates
nucleic acids
6
pH is the measurement of what?
Concentration of H+
Concentration of acids
Concentration of bases
Concentration of water
7
Lipids are made of all of the following except...
Hydrogen
Nonpolar bonds
Carbon
Nitrogen
8
The place an enzyme and substrate binds is called the...
substrate
active site
enzyme
product
9
A reaction has water as a product. What type of reaction could this be?
cohesion
adhesion
hydrolysis
dehydration synthesis
10
What does 2 represent in the graph?
the total energy released in the reaction
the energy of the reactants
the activation energy of the reaction
the energy of the products
11
Something that lowers the activation energy so a reaction can happen faster is called a/an...
protein
molecule
product
catalyst
12
Which of the following is NOT true about an ionic bonds
They are found typically in salts or between metals and nonmetals.
They create molecules with positive or negative charges
They involve electrons.
They create a different number of protons
13
Water sticking to glass molecules is an example of what special force?
capillary action
cohesion
adhesion
surface tension
14
This is an image of a/an
Carbohydrate
Protein
Amino Acid
Lipid
15
The water molecule is referred to as "polar" because
The oxygen is more negatively charged than hydrogen
It is cold
It has ionic bonds
It has no electrons
16
Which of the following is a carbohydrate polymer?
glycogen
triglyceride
starch
glucose
17
When the temperature or pH gets too high, what happens to an enzyme?
The activation energy changes.
It becomes denatured.
It competes with other enzymes.
The amount of substrate goes down.
18
Water sticking to other water molecule is an example of what special force?
adhesion
surface tension
capillary action
cohesion
19
What type of bond holds amino acids together?
peptide bonds
glycosidic bonds
amino bonds
hydrogen bonds
20
Choose the strongest acid.
pH 6
pH 14
pH 8
pH 3
21
All organic substances contain
carbon
oxygen
water
nitrogen
22
Where is a product located?
To the right of the arrow
Above the arrow
After the arrow
To the left of the arrow
23
Which of the following is not a subatomic particle?
Molecule
Neutron
Electron
Proton
24
What does denaturing mean?
To change shape
To form bonds/bind
To dance around in the woods
To alter the pH
25
The macromolecule shown is a
Nucleic Acid
Carbohydrate
Lipid
Protein
26
The macromolecule shown in the image is made of simple sugars, so it is a
Monosaccharide
Nucleic Acid
Lipid
Starch
27
What does the following graph show?
Activation energy of a cold vs a warm reaction
Enzyme raising the activation energy
Activation energy of an enzyme vs no enzyme reaction
Enzyme slowing the reaction down
28
The thing an enzyme binds to is called the...
enzyme
substrate
active site
product
29
Which of the following is true of this image?
It is used for long term energy storage
It is nucleic acid
It is a macromolecule
It is carbohydrate
30
A chemical compound is best described as a
Elemet with more neutrons
A mixture of solutes and solvents
Two or more elements combined by bonds
An element with a charge
31
How do you know where a peptide bond is?
between the two C's in a fatty acid
between the amino acids
between a carbonyl and an alpha carbon
between two monosaccharides
32
The type of bond where two elements share and electron pair is called
Covalent
Van der Waals
Hydrogen
Ionic
33
The small molecules that make up a polymer are called
Bimers
Lipids
Monomers
Starches
34
Neutral on the pH scale is
6
8
7
1
35
Choose the strongest base.
pH 9
pH 1
pH 10
pH 7
36
The water molecules shown are stuck together with
Ionic Bonds
Super Glue
Hydrogen Bonds
Adhesion
37
Which type of macromolecule includes enzymes?
Nucleic Acids
Proteins
Carbohydrates
Lipids
38
What is the monomer that makes up nucleic acids?
Monosaccharides
Nucleotides
Amino Acids
Magic
39
The most common elements in living organisms can be remembered with the acronym:
pogba
snapsc
schnops
chnops
40
What type of reaction creates multiple monomers from one polymer?
hydrolysis
adhesion
dehydration synthesis
cohesion
41
How prepared do you feel for this test?
Imma make an A!
I know like 80% of this
Yeah, I have a LOT of studying to do.
I know maybe half?
42
The molecule being shown in the image is a
Molecule
Nucleotide
All the others are correct
Monomer
43
Which of the following has the correct ending?
-ose for sugars
-ol for carboxyls
-ate for enzymes
-ase for lipids
44
The folding of the protein backbone into alpha helixes and beta pleated sheets is what level?
Quarternary
Teritiary
Primary
Secondary
45
Enzymes are examples of...
products
reactants
polar catalysts
nonpolar catalysts
46
What does 4 represent in the graph?
the energy of the reactants
the total energy released in the reaction
the activation energy of the reaction
the energy of the products
47
What types of molecules can dissolve in water?
elements
electrons
polar
nonpolar
48
This is an image of a/an
lipid
carbohydrate
nucleic acid
protein
49
Which macromolecule is used for short term energy?
Lipid
Nucleic Acid
Protein
Carbohydrate
50
What is the difference between the saturated and unsaturated fatty acids shown?
Unsaturated has more hydrogen
Saturated has less hydrogen
Unsaturated has a double bond
Saturated has all double bonds
51
Which of the following is true of enzymes?
They are sensitive to pH.
They are sensitive to temperature.
They are sensitive to substrates.
They are sensitive to concentrations of enzymes.
52
The monomer shown in the image is
A nucleotide
An amino acid
A monosaccharide
A simple sugar
53
Which of the following is not true about DNA?
It is a macromolecule
It is made up of nucleotides
It is a protein
It has the sugar deoxyribose
