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Biological Molecules and the Chemistry of Life Flashcards | StudBud
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Biological Molecules and the Chemistry of Life
Biological Molecules and the Chemistry of Life
45 terms
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A review of introductory biochemistry concepts
Flashcards
45 cards
F
Practice quiz
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Host live
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Questions
45
Answers
1
Acids are compounds that form H+ ions in solution.
True
False
2
Hydrolysis
only metabolizes lipids
needs H2O as a reactant
occurs only in plants
combines short polymers/monomers to make a longer polymer
3
What is found in the space surrounding the nucleus of an atom?
electrons
protons
neutrons
none of these are choices are correct
4
A chain of amino acids
Eukaryotes
Central dogma of biology
Polypeptide
Structural component of ribosomes
5
What does dehydration synthesis mean?
I don't know
To join together two molecules
To put together while losing water.
Hold together Fatty acids and glycerol
6
Oil is ___ and water is ____, therefore, oil and water do not mix.
nonpolar; polar
polar; nonpolar
7
Animals store glucose in the form of
glycogen
cellulose
lipids
wax
8
Activation Energy is......
energy needed to live
energy needed for pretzelase
energy needed to start chemical reaction
energy needed for substrates
9
The oxygen side of a water molecule is slightly positive
False
True
10
What is so special about carbon?
It has four valence electrons that can bond with other atoms
It is polar.
It has two valence (outer electrons) that can bond.
Isotopes of carbon exist in nature.
11
What can denature an enzyme?
water
high temperatures
pH changes
electricity
12
This polymer is produced from nucleotides and it stores genetic information.
Protein
Lipid
Nucleic Acid
Carbohydrate
13
Glycogen is a
plant starch
indigestible polysaccharide also called cellulose
polysaccharide that is the storage form of glucose
alcohol, an end product of fat digestion
14
hydrolysis is to...
break chemical bonds
make something
break chemical bonds by adding water
make chemical bonds
15
Cholesterol is an example of a
nucleic acid
carbohydrate
protein
lipid
16
Monosaccharides and polysaccharides provide energy for organisms.
True
False
17
Amino acids are a monomer of nucleic acids.
True
False
18
Atoms are made up of which of the following?
protons
all of these
electrons
neutrons
19
Which water property is defined as ¨water molecules attracted to other types of substances¨?
heat capacity
cohesion
pH
adhesion
20
What does ATP do?
makes food
stores enery
21
Water is polar.
True
False
22
Solutions that release more OH- than H+ are classified as a
acid.
buffer.
suspension
base.
23
RNA stands for:
re-nucelotide acid
ribonic acid
Ribonucleic acid
ribulose nucleotide
24
What is an ENZYME?????
energy needed to get the reaction started
substance that speeds up the chemical reaction
lowers a reactions activation energy
biological catalysts, a type of protein within a cell
25
Boiling can denature an enzyme.
true
false
26
A substance that speeds up the rate of a reaction is
an inhibitor.
a sugar.
a catalyst.
an acid.
27
How many amino acids are there?
15
25
10
20
28
In sweet tea, water is the
solution.
suspension.
solute.
solvent.
29
Which force does the feet of a gecko use?
gravitational
Van der Waals
tension
hydrogen
30
Which of the following monomers makes up carbohydrates?
amino acids
fatty acids
simple sugars
nucleotides
31
What does an enzyme do?
Lowers product
Gives reactant potential energy
Makes more reactant
Lowers reaction energy
32
Proteins are polymers that are made up of monomers called
fatty acids.
nucleotides.
amino acids.
simple sugars.
33
This molecule is DNA. It is a type of
carbohydrate.
lipid.
nucleic acid.
protein.
34
In seawater, salt is the
suspension.
solute.
solution.
solvent.
35
The pH of lemon juice is
above 7
14
7
below 7
36
Blood cells do not dissolve in plasma, therefore blood is a
base.
suspension.
solvent.
solution.
37
This polymer is made up of monomers that are mostly of chains of carbon & hydrogen.
Proteins
Carbohydrates
Lipids
Nucleic Acids
38
Amino Acids are made of...
Titanium, Steel
Hydrogen, Oxygen,
Sulfur, Nirtogen, Carbon
Charazard, Yoshi.
39
Product of a dehydration synthesis reaction?
Polysaccharide
Glucose
Monosaccharide
Carbon Dioxide
40
Deoxyribose is the sugar in RNA.
True
False
41
An enzyme is a type of
protein.
lipid.
carbohydrate.
nucleic acid.
42
Testosterone is a Steroid.
False
True
43
DNA and RNA are...
nucleic acids
proteins
carbohydrates
lipids
44
Seawater is a solution with a pH of 8.1 and means that it is
a buffer.
a base.
neutral.
an acid.
45
A _____ will fit into the active site of an enzyme.
A base
An inhibitor
A substrate
An acid
