WorksheetsAP Biology Unit 1 Review
Total questions: 65
Worksheet time: 42mins
Which of the following does not result from hydrogen bonding in water molecules?
Cohesion
Adhesion
Surface Tension
Dissolving fats
Why is water considered polar?
Nonpolar covalent bonds in structure
Ionic bonds in structure
Polar covalent bonds in structure
Hydrophobic interaction in structure
Which macromolecule(s) have nitrogen?
Carbohydrates
Proteins
Nucleic Acids
Nucleic Acids & Proteins
Which macromolecule(s) have phosphorus?
Carbohydrates
Proteins
Nucleic Acids
Fats
Which macromolecule(s) have sulfur?
Carbohydrates
Proteins
Nucleic Acids
Fats
Describes the forming of a bond between monomers with the removal of a water molecule.
Hydrolysis
Dehydration
Describes the breaking of a bond within a polymer using water.
Hydrolysis
Dehydration
Which of the following is NOT in the monomer of a nucleic acid?
pentose sugar
nitrogenous base
phosphate
amino acid
Which of the following is NOT in the monomer of a protein?
Amine Group
R Group
Carboxyl Group
Nitrogenous Base
Describe the orientation of the phospholipids in the membrane.
Phospholipids orient in bilayer with hydrophilic heads on exterior
Phospholipids orient in monolayer with hydrophilic head on extracellular
Phospholipids orient in bilayer with hydrophobic tails on exterior
Phospholipids orient in monolayer with hydrophobic tails on extracellular
How is DNA/RNA synthesis directionally oriented?
new nucleotides are added to 5' phosphate
new nucleotides are added to 3' phosphate
new nucleotides are added to 5' hydroxyl
new nucleotides are added to 3' hydroxyl
Identify the pairing and number of bonds in DNA double helix
A pairs with T (2 bonds) & G pairs with C (3 bonds)
A pairs with G (2 bonds) & T pairs with C (3 bonds)
A pairs with T (3 bonds) & G pairs with C (2 bonds)
A pairs with G (3 bonds) & T pairs with C (2 bonds)
What component of the polypeptide is the next amino acid added forming the peptide bond?
amino group
hydrogen
carboxyl group
R groups
Which protein involves R group bonding to form the final three dimensional structure?
primary
secondary
tertiary
quaternary
Which protein structure involves the peptide bonds between amino acids?
primary
secondary
tertiary
quaternary
DNA and RNA differ on many qualities, which of the following is NOT a difference?
Sugar
Nitrogenous Base
Phosphate Group
Strandedness
What type of bond is found BETWEEN water molecules?
Hydrogen bonds
Ionic bonds
Nonpolar covalent bonds
Polar covalent bonds
Surface tension of water is the cohesive force between water molecules and other molecules.
True
False
Cohesive force between water molecules and adhesive force between water molecules and other molecules enable this phenomenon to occur.
Surface tension
Capillary action
Float on water
Photosynthesis
Which end of the water molecule has a slightly positive charge?
The hydrogen end
The oxygen end
Both ends are slightly positive
Neither end is positive
What word describes when water is attracted to other substances?
Cohesion
Adhesion
Capillary action
Surface tension
When water molecules stick easily to other water molecules, this is called what?
Cohesion
Adhesion
Solution
Polar molecule
Water beads up on the surface of a penny because of what property?
Adhesion
High surface tension
Universal solvent
Changes in density
The fact that ice floats on liquid water is due to the fact that water's solid form is _____________ than its liquid form.
Less polar
More polar
Less dense
More dense
The tightness across the surface of water that enables insects to walk on it is
Adhesion
Capillary action
Surface tension
Polarity
Which statement explains why water molecules stick together?
Both sides are negative
One side has a positive charge and the other side has a negative charge
One side has a negative charge and the other side has a neutral charge
Both sides are positive
Large bodies of water help to keep nearby climates from being too hot or too cold because they
Absorb heat in the spring and slowly release that heat in the fall
Absorb heat in the fall and slowly release that heat in the spring
Absorb heat in the summer and slowly release that heat in the winter
Absorb heat in the winter and slowly release that heat in the summer
A difference between RNA and DNA
The sugar involved
No pyrimidines
No purines
Different phosphates
A difference between RNA and DNA
Ionic bonding
Covalent bonding
Thymine and Uracil
Guanine and Cytosine
The ratio of carbon, hydrogen, and oxygen in carbohydrates
2:1:1
1:2:1
1:2:2
1:1:1
Why is the bottom part of this triglyceride bent?
A nitrogen is added
It just is
Deformed
Double bond
Which of the following element(s) are the main components in lipids?
Carbon and Hydrogen
Nitrogen
Oxygen
Sulfur
Which of the following describes why lipids are hydrophobic?
Lipids are composed mostly of hydrocarbons which are nonpolar
Lipids have hydrogen bonds that repel the hydrogen bonds in water
Lipids have more neutrons in their atoms, making the compound neutral
Lipids are gaseous materials that do not dissolve in water
Which of the following functional groups would you always find in an amino acid?
-OH
-NH2
-CO
CH3
Which of the following is true of RNA?
Double stranded helix
Single stranded
Has the base Thymine
Has the sugar deoxyribose
Amino acids are classified according to
Sequence of amino acids
If they are single stranded or double stranded
The properties of the R group
The properties of the carboxyl group
The tertiary structure of a protein is dependent on
the sequence of amino acids
interactions between the amino acid backbone
the interactions of the R groups
Binding of two or more polypeptides together
Which molecules would contain the element phosphorus?
Carboyhydrates and lipids
Nucleic acids and lipids
Proteins and carbohydrates
Proteins and nucleic acids
Which statement describes an ionic bond?
Two atoms share a pair or electrons equally
Two atoms share a pair of electrons unequally
One atom gives up an electron to another, and oppositely charged atoms form a bond
One atom shares a proton equally
Why is ice less dense than liquid water?
Partial charges of water molecules repel each other
Water has a high surface tension, keeping ice on the surface
As water cools the hydrogen bonds keep molecules separate from each other
As water cools the hydrogen bonds draw the molecules more closely together
What is the monomer of proteins?
Fatty acids
Amino Acids
Monosaccharides
Nucleotides
What is the monomer of carbohydrates?
Fatty acids
Amino Acids
Monosaccharides
Nucleotides
What is the monomer of nucleic acids?
Fatty acids
Amino Acids
Monosaccharides
Nucleotides
What type of reaction is shown in the image?
Dehydration synthesis
Hydrolsis
DNA replication
RNA translation
In an experiment testing the effect of fertilizer on plant height, what is the dependent variable?
Amount of fertilizer
Amount of sunlight
Amount of water
Plant height
Which of the following might denature proteins?
Increased temperature
Change in pH
Ultraviolet light
All of these would denature proteins
In an experiment looking at the effects of supplemental growth hormone on the weight of rats, what would go on the y axis?
amount of growth hormone
weight of rats
time of rats in a maze
temperature of the rats' environment
Which of the following is correctly defined as the attraction of the hydrogen from one molecule to the oxygen of a different molecule?
amphipathic
hydrophobic
hydrogen bonding
adhesion
In DNA, Thymine bonds with
Adenine
Cytosine
Guanine
Uracil
Structures of carbohydrates are
monomers
chains of monomers
branched structures
all of the options
The process in the picture is called
Dehydration synthesis
Hydrolysis
Glyosidic linking
Atomic bonding
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
Water is an acid
Water has a high heat capacity.
Water acts as a buffer.
Water is a versatile solvent.
Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together
The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet
The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
What functional group is -OH
Amino
Hydroxyl
Methyl
Carboxyl
What functional group is shown?
Methyl
Hydroxyl
Carbonyl
Carboxyl
What functional group is shown?
Methyl
Hydroxyl
Carbonyl
Carboxyl
Atoms in molecules share pairs of electrons when they form
Covalent bonds
Ionic Bonds
Polymers
Hydrogen bonds
A scientist grew Chlorella, a single-celled photosynthetic algae, for three weeks in a laboratory culture. The culture medium contained dissolved carbon and other nutrients.
Scientists measured the beginning and the end of the three week period. Based on the results of the graph which nutriets were absent from the culture medium?
phosphorus
nitrogen
oxygen
sulfur
DNA and RNA have the same 5-carbon sugar and the same nucleotides.
True
False
Substitution of amino acids in primary struture does not affect subsequent levels of protein folding.
True
False
Which protein structure involves the peptide bonds between amino acids?
primary
secondary
tertiary
quaternary
