WorksheetsUnit 4 Exam Review
Total questions: 62
Worksheet time: 1hrs 2mins
Using the element tag on the left:
What is the symbol of the element?
C
A
6
Carbon
Using the element tag on the left:
What is the name of the element?
C
A
6
Carbon
Using the element tag on the left:
What is the atomic number of the element?
C
12.011
6
Carbon
Using the element tag on the left:
What is the atomic mass of the element?
C
12.011
6
Carbon
Using the element tag on the left:
How many protons does the element have?
2
4
6
12
Using the element tag on the left:
How many electrons does the element have?
2
4
6
12
Using the element tag on the left:
How many neutrons does the element have?
2
4
6
12
Protons have a ________ charge
positive
negative
neutral
Neutrons have a ________ charge
positive
negative
neutral
Electrons have a ________ charge
positive
negative
neutral
Which of the following is the correct shell diagram (Bohr's model) for the element:
Carbon (6 electrons)
Which of the following is the correct shell diagram (Bohr's model) for the element:
Oxygen (8 electrons)
Which of the following is the correct shell diagram (Bohr's model) for the element:
Hydrogen (1 electrons)
A lewis dot structure shows the...
Which of the following is the correct lewis structure for carbon?
Cohesion is the ability of water molecules to join ("stick") to...
other water molecules
non polar molecules
polar molecules
Adhesion is the ability of water molecules to join ("stick") to...
other water molecules
non polar molecules
polar molecules
A water molecules is considered to be polar because...
the oxygen has a slightly positive charge and the hydrogen has a slightly negative charge
the oxygen has a slightly negative charge and the hydrogen has a slightly positive charge
the oxygen and hydrogens have neutral charges
Oil is an example of a _________ molecule
polar
non polar
Because oil is non polar...
it can mix with water
it can not mix with water
The ability of water to travel up other substances, against gravity (such as in the roots of plants), is known as...
fusion
capillary action
surface tension
vaporization
The oxygen and hydrogens in a single water molecule are joined through _______ bonds
ionic
covalent
hydrogen
Different water molecules are joined together through _______ bonds
ionic
covalent
hydrogen
The _______ of one water molecule is attracted to the hydrogen of another water molecule
oxygen
hydrogen
How are macromolecules formed?
by the joining of polymers to create monomers
by the joining of monomers to create polymers
What do all "organic" molecules have in common?
They all contain oxygen
They all contain sodium
They all contain carbon
They all contain nitrogen
What is the function of carbohydrates?
short term, immediate energy
tissue growth and repair, cellular processes
long term energy storage
stores genetic information
What is the function of lipids?
short term, immediate energy
tissue growth and repair, cellular processes
long term energy storage
stores genetic information
What is the function of nucleic acids?
short term, immediate energy
tissue growth and repair, cellular processes
long term energy storage
stores genetic information
What is the function of proteins?
short term, immediate energy
tissue growth and repair, cellular processes
long term energy storage
stores genetic information
Which elements are found in proteins?
just carbon
CHNO(S)
CHNOP
CHO
Which elements are found in carbohydrates?
just carbon
CHNO(S)
CHNOP
CHO
Which elements are found in lipids?
just carbon
CHNO(S)
CHNOP
CHO
Which elements are found in nucleic acid?
just carbon
CHNO(S)
CHNOP
CHO
What is the general structure of lipids?
central carbon bonded to an amino group and a carboxyl group (N-C-C in the middle)
central sugar bonded to a phosphate group and nitrogenous base
ring like structure of carbon and hydrogens
long chain of hydrocarbons
What is the general structure of nucleic acid?
central carbon bonded to an amino group and a carboxyl group (N-C-C in the middle)
central sugar bonded to a phosphate group and nitrogenous base
ring like structure of carbon and hydrogens
long chain of hydrocarbons
What is the general structure of protein?
central carbon bonded to an amino group and a carboxyl group (N-C-C in the middle)
central sugar bonded to a phosphate group and nitrogenous base
ring like structure of carbon and hydrogens
long chain of hydrocarbons
What is the general structure of carbohydrates?
central carbon bonded to an amino group and a carboxyl group (N-C-C in the middle)
central sugar bonded to a phosphate group and nitrogenous base
ring like structure of carbon and hydrogens
long chain of hydrocarbons
What is the monomer of carbohydrates?
monosaccharide
fatty acid
amino acid
nucleotide
What is the monomer of protein?
monosaccharide
fatty acid
amino acid
nucleotide
What is the monomer of lipid?
monosaccharide
fatty acid
amino acid
nucleotide
What is the monomer of nucleic acid?
monosaccharide
fatty acid
amino acid
nucleotide
What is the polymer of nucleic acid?
polypeptide
triglyceride
polysaccharide
polynucleotide
What is the polymer of carbohydrates?
polypeptide
triglyceride
polysaccharide
polynucleotide
What is the polymer of lipids?
polypeptide
triglyceride
polysaccharide
polynucleotide
What is the polymer of protein?
polypeptide
triglyceride
polysaccharide
polynucleotide
What is an example of a carbohydrate?
DNA, RNA, and ATP
Sugars and starches
Enzymes and hormones
Fats and oils
What is an example of a protein?
DNA, RNA, and ATP
Sugars and starches
Enzymes and hormones
Fats and oils
What is an example of nucleic acid?
DNA, RNA, and ATP
Sugars and starches
Enzymes and hormones
Fats and oils
What is an example of a lipid?
DNA, RNA, and ATP
Sugars and starches
Enzymes and hormones
Fats and oils
When monomers join together to form polymers, a water molecule is...
removed
added
When polymers are broken down into individual monomers, a water molecule is...
removed
added
Enzymes are made of which macromolecule?
carbohydrate
lipid
nucleic acid
protein
What is the function of an enzyme?
to slow down chemical reactions
to speed up chemical reactions
How does an enzyme speed up a chemical reaction?
In a chemical reaction, the reactants are on the _____ side of the arrow
left
right
In a chemical reaction, the products are on the _____ side of the arrow
left
right
When a chemical reaction occurs, atoms can be destroyed completely
true
false
Enzymes can be reused after a chemical reaction
true
false
How does temperature influence enzyme activity?
Higher temperatures cause more enzyme activity
Lower temperatures cause more enzyme activity
High temperatures denature the enzymes, causing little activity
How does the concentration of an enzyme influence a chemical reaction?
The higher the concentration the slower the reaction
The higher the concentration the faster the reaction
The concentration of enzyme has no effect on a chemical reaction
pH has no effect on enzyme activity
true
false
