Which food items can be broken down mostly into amino acids?
Responses
spaghetti noodles
spaghetti noodles
hamburger patties
hamburger patties
apple slices
apple slices
cucumber slices
2
Leucine is one of the amino acids your body needs but cannot make. Which of these happens so that the human body can obtain leucine?
Responses
The body converts other amino acids to leucine.
The body converts other amino acids to leucine.
The body stores carbohydrates containing leucine.
The body stores carbohydrates containing leucine.
The body breaks down fatty acids to obtain leucine.
The body breaks down fatty acids to obtain leucine .
The body digests protein in food to obtain leucine.
3
During digestion, fructose is produced by the breakdown of larger molecules. Which type of molecule could be broken down to increase the body’s fructose levels?
Responses
proteins
proteins
vitamins
vitamins
triglycerides
triglycerides
carbohydrates
4
Which of these statements describes how monomers combine and create macromolecules?
Responses
Amino acids combine to make proteins.
Amino acids combine to make proteins.
Glucose molecules combine to make nucleic acids.
Glucose molecules combine to make nucleic acids.
Nucleic acids combine to make starch.
Nucleic acids combine to make starch.
Proteins combine to make glucose.
5
Which type of molecules combine to make up the protein portion of hemoglobin?
Responses
fatty acids
fatty acids
amino acids
amino acids
monosaccharides
monosaccharides
polysaccharides
6
A biological molecule is analyzed, and it is discovered that the molecule is composed of several amino acids. Which of these identifies the biological molecule?
Responses
It is a lipid.
It is a lipid.
It is a protein.
It is a protein.
It is an unsaturated fat.
It is an unsaturated fat.
It is a monosaccharide.
7
Fats are specialized lipid molecules, and enzymes are specialized protein molecules. How do the functions of fats and enzymes differ?
Responses
Fats are structural building materials, while enzymes are transportation molecules.
Fats are structural building materials, while enzymes are transportation molecules.
Fats provide support for cells, while enzymes lower the pH of gastric fluids.
Fats provide support for cells, while enzymes lower the pH of gastric fluids.
Fats regulate body functions, while enzymes denature invasive bacteria.
Fats regulate body functions, while enzymes denature invasive bacteria.
Fats are storage molecules, while enzymes are catalytic molecules.
8
All organisms contain DNA and RNA. What are the subunits of DNA and RNA?
Responses
simple sugars
simple sugars
amino acids
amino acids
carbohydrates
carbohydrates
nucleotides
9
Which biomolecules are found in all organisms?
Responses
glucose, maltose, fructose, sucrose
glucose, maltose, fructose, sucrose
adenine, cytosine, thymine, guanine
adenine, cytosine, thymine, guanine
chlorophyll, chitin, pepsin, glycogen
chlorophyll, chitin, pepsin, glycogen
cholesterol, phospholipid, cellulose, gibberellin
10
Biomolecules contain a variety of atoms. Which biomolecule maintains a ratio of 1 carbon atom to 2 hydrogen atoms to 1 oxygen atom?
Responses
lipid
lipid
protein
protein
nucleic acid
nucleic acid
carbohydrate
carbohydrate
11
Which statements explain the primary difference between the structure of a nucleic acid and the structure of a protein?
Responses
A nucleic acid has alternating base pairs. A protein has alternating peptides.
A nucleic acid has alternating base pairs. A protein has alternating peptides.
Nitrogen bases form the backbone of a nucleic acid. Peptides form the backbone of a protein.
Nitrogen bases form the backbone of a nucleic acid. Peptides form the backbone of a protein.
Nucleotides link together to form a nucleic acid. Amino acids link together to form a protein.
Nucleotides link together to form a nucleic acid. Amino acids link together to form a protein.
A nucleic acid is held together by the sugar-phosphate complex. A protein is held together by the carbon-carbon bonds.
12
How are the functions of a carbohydrate and a lipid similar?
Responses
Both are a source of energy.
Both are a source of energy.
Both are replicated during meiosis.
Both are replicated during meiosis.
Both lower the activation energy of reactions.
Both lower the activation energy of reactions.
Both dissolve nutrients in the digestive system.
13
Which biomolecule does not have a carbon-nitrogen bond?
Responses
protein
protein
peptide
peptide
nucleic acid
nucleic acid
carbohydrate
14
Which of these has the general chemical formula CH2O?
Responses
proteins
proteins
lipids
lipids
carbohydrates
carbohydrates
steroids
15
Which is the most accurate model to show how amino acids form proteins?
Responses
bees in a hive
bees in a hive
cars on a train
cars on a train
petals on a flower
petals on a flower
pieces in a jigsaw puzzle
pieces in a jigsaw puzzle
16
Which property of proteins best allows them to perform an enormously diverse range of functions?
Responses
their large, chemical-energy reserve
their large, chemical-energy reserve
their large, stored-electric potential
their large, stored-electric potential
the complexity of their folded structure
the complexity of their folded structure
the wide variety of elements they include
17
Which property of proteins best allows them to perform an enormously diverse range of functions?
Responses
their large, chemical-energy reserve
their large, chemical-energy reserve
their large, stored-electric potential
their large, stored-electric potential
the complexity of their folded structure
the complexity of their folded structure
the wide variety of elements they include
18
In organisms, macromolecules are made up of subunits. Which of these pairs correctly describes how a macromolecule is constructed?
Responses
DNA is made up of nucleic acids.
DNA is made up of nucleic acids.
Protein is made up of amino acids.
Protein is made up of amino acids.
Nucleic acids are made up of DNA.
Nucleic acids are made up of DNA.
Amino acids are made up of protein.
Amino acids are made up of protein.
19
The directions for making a protein
Responses
result in DNA.
result in DNA.
are carried by DNA.
are carried by DNA.
result in amino acids.
result in amino acids.
are carried by amino acids.
20 Which of these is part of the description of protein?
Responses
a folded chain of amino acids
a folded chain of amino acids
a folded chain of carbohydrates
a folded chain of carbohydrates
a branched chain of fatty acids
a branched chain of fatty acids
a branched chain of nucleic acids
21
Which of these is part of the description of protein?
Responses
a folded chain of amino acids
a folded chain of amino acids
a folded chain of carbohydrates
a folded chain of carbohydrates
a branched chain of fatty acids
a branched chain of fatty acids
a branched chain of nucleic acids
22
Choose the correct sequence of terms to fill in this sentence correctly:
_______ are subunits of _______, which code for the next _______ in a sequence that makes up _______.
Responses
Amino acids, proteins, nucleotide, a DNA molecule
Amino acids, proteins, nucleotide, a DNA molecule
DNA molecules, nucleotides, protein, an amino acid
DNA molecules, nucleotides, protein, an amino acid
Nucleotides, DNA molecules, amino acid, a protein
Nucleotides, DNA molecules, amino acid, a protein
Proteins, amino acids, DNA molecule, a nucleotide