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WorksheetsUnit 2 Bio Chemistry Review
Total questions: 35
Worksheet time: 17mins
The monomers of nucleic acids are called....
Amino Acids
Nucleotides
Polymers
Fatty Acids
What is the function of a nucleotide?
stores genetic information
short term energy storage
breaks down sugars
long term energy storage
Substrates bind to the _____________ on the enzyme?
key site
active site
lock and key site
allosteric site
Which of the following can affect the rate at which enzymes can operate?
pH
substrate concentration
temperature
all of these
Which of these properties of water helps prevent permanent freezing of lakes?
Water freezes at 0 degrees C.
Water becomes a solid as it freezes.
Ice floats when it freezes.
Ice loses heat when it melts.
The monomer of a protein ...........
fatty acids
DNA
amino acids
lipids
The function of a protein is....
building blocks of carbs
building blocks of cells
building blocks of fatty acids
building blocks of atoms
Lactase breaks down lactose. Amylase breaks down amylose. Sucrose is broken down by sucrase. This model set supports which of the follow statements about enzymes?
Enzymes are specific for a substrate
Enzymes can be denatured with heat
Enzymes lower activation energy
Enzymes speed up reaction
This image represents the structure of a...
Lipid
Protein
Carb
Nucleic Acid
Polysaccharides like breads and pastas are examples of...
Carbs
Lipids
Nucleic Acids
DNA
Which is an example of protein?
Potatoes
DNA
Steak
Oil
True or False: Lipids mix with water.
True
False
Which is NOT a function of lipids?
long term energy
quick energy
insulation
An example of an acid would be
ammonia
water
vinegar
bleach
Which is the negatively charged particle located outside the nucleus of an atom?
electrons
neutrons
silicon
protons
A single carbon atom can form a maximum of how many covalent bonds?
2
4
6
8
The charge of a neutron is
positive
negative
neutral
polar
What subatomic particles are located inside the nucleus?
neutrons only
protons only
protons and electrons
protons and neutrons
Number of electrons that fills the first outer shell?
16
2
8
18
What are the reactants in this equation?
Water and Carbon Dioxide
Glucose and Oxygen
Glucose and Water
Carbon Dioxide
The bond formed when two atoms share a pair of electrons is called a(n)
ionic bond
hydrogen bond
covalent bond
friendship bond
Oxygen has ____ protons.
6
16
2
8
Bases have a pH of ..... on the pH scale.
7
8-14
0-6
Acids turn litmus paper ______.
blue
green
red
none
Which pH value indicates the most acidic condition?
1.6
7.3
2.1
11.1
What property is responsible for salt not being able to dissolve in oil?
polarity
adhesion
cohesion
density
Acids produce __________ ions.
OH-
H+
When an endothermic chemical reaction takes place, heat is released into the environment.
True
False
The property of water that allows water bugs to "walk" on water is..
cohesion
adhesion
surface tension
specific heat
Catalysts (enzymes) ______________ reactions
speed up
slow down
What elements are found in Carbohydrates?
C-H-O-N
C-H-O-N-P
C-H-O
C-H-O-M-P
If the substrate is maltose, then the enzyme to help break it down would be ....
lactose
maltase
lactase
galactose
An organic compound is a compound that contains
nitrogen
hydrogen
oxygen
carbon
In living things, smaller substances are linked to make up larger substances. Which of the following correctly describes a larger substance made by linking smaller substances?
Nucleotides are linked to make up DNA
Amino acids are linked to make up DNA
Proteins are linked to make up nucleotides
Nucleic acids are linked to make up proteins
During digestion, fructose (sugar) is produced by the breakdown of larger molecules. Which type of molecule could be broken down to increase the body’s fructose levels?
protein
lipids
carbohydrates
