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WorksheetsAP Bio Unit 1
Total questions: 55
Worksheet time: 28mins
Which element(s) make up about 96% of living matter?
carbon
hydrogen
nitrogen
oxygen
all of these
True or False. All life requires the same essential elements
True
False
True or False. Iron is needed by all humans
True
False
Which option contains only compounds
H2O, O2 & CH4
H2O & & O2
O2 & CH4
H2O & CH4 but not O2
Elements in the same column of the periodic table all have the same number of
protons
neutrons
valence electrons
electrons
Why is the average atomic mass on the periodic table usually a decimal?
it includes electrons
it is a weighted average mass
neutrons weigh part of a dalton
Oxygen has an atomic mass of 8. Oxygen-18 has...
8 protons, 8 neutrons
8 neutrons, 10 protons
4 protons, 4 neutrons
8 protons, 10 neutrons
Van der Waals interactions help lizards grip to walls, this works best on
surfaces with equal electron distribution
surfaces with unequal electron distribution
How many bonds can oxygen make?
1
2
3
4
A molecular formula shows
the type and number of atoms in a molecule
valence electrons
the number of neutrons
Which of the following is true about the reaction (ignore the endothermic word)
it is nonreversible
NH3 is the product of the reverse reaction
NH3 is being formed and decomposed simultaneously
only one reaction occurs at a time
True or False. At chemical equilibrium the rate of the forward reaction is the same as the rate of the reverse reaction
True
False
The attraction between an oxygen of one water molecule and the hydrogen of another is called a
ionic bond
covalent bond
hydrogen bond
Van der Waals interaction
What would happen if Oxygen had similar electronegativity to carbon?
it would form stronger hydrogen bonds
it would not form hydrogen bonds
it would have a higher evaporation temperature
it would be a lipid
Liquid water
has a low specific heat
is nonpolar
is less dense than ice
has a high specific heat compared to other substances
Why do cities by the sea experience less extreme temperatures?
fresh water is more likely to freeze than salt water
cyclones regulate the weather
the ocean moderates the temperature
What would happen to the reaction if more NH3 was added?
the rate of the reverse reaction would increase (more N2 & H2 produced)
the rate of the forward reaction would increase (more NH3 produced)
nothing
the reaction would stop
Alkalis (bases) have more of which ions?
H+
OH-
Na+
Cl-
All organic molecules contain
Hydrogen
Oxygen
Carbon
Nitrogen
True or False. The current approach assumes that living organisms can be understood in the same way as other natural phenomena
True
False
Stanley Miller's 1953 experiment found support that
life can only arise from other life
bacteria generate sponatneously
the first life forms were inorganic
simple organic molecules and energy from violent weather conditions can make molecules conducive to life
Carbon is the best because
it can form many bonds
it is the lightest element
it is highly electronegative
it is the most common element on Earth
Cis-Trans isomers
are mirror images of each other
have the exact same chemical properties as each other
have variations in arrangement around a double bond
have different chemical formulas
What functional groups are present in all amino acids? (You can pick more than 1)
Amino group
Carbonyl group
Hydroxyl group
Carboxyl group
Sulfhydryl
Which functional group is found in alcohols (e.g. ethanol)?
Carboxyl
Carbonyl
Hydroxyl
Amino
Which functional group is acidic and can dissociate to form H+ ions?
Carboxyl
Carbonyl
Hydroxyl
Amino
How many molecules of water would be needed to hydrolyze a polymer that is 5 monomers long?
3
4
5
6
C6H12O6 is a glucose molecule. If this monomer made a polymer with 10 glucose monomers, what would the formula be?
C6H12O6
C12H24O12
C60H120O60
C16H112O16
Glycosidic bonds happen in
carbohydrates
lipids
proteins
nucleic acids
Peptide bonds happen in
carbohydrates
lipids
proteins
nucleic acids
Phospholipids and triglycerides are both
carbohydrates
lipids
proteins
nucleic acids
Phospholipids have ___ fatty acids, whereas triglycerides have ____
1 ; 2
2 ; 3
3 ; 2
3 ; 3
Which of the following is FALSE. Saturated fatty acids
have double bonds
are solid at room temperature
are lipids
are more common in animals
True or False. Steroids are soluble in water
True
False
True or False. Protein structure and function are correlated because denatured enzymes do not function properly
True
False
A list of amino acids in the order they appear in a protein is its
primary structure
secondary structure
tertiary structure
quaternary structure
A single, fully folded protein chain is its
primary structure
secondary structure
tertiary structure
quaternary structure
Multiple, fully folded protein chains interacting with each other is a
primary structure
secondary structure
tertiary structure
quaternary structure
RNA molecules
help synthesize proteins
store genes
transmit genetic information to offspring
Nucleotides have (you can pick more than 1)
nitrogenous base
5 carbon sugar
an amino acid
a phosphate group
glycerol
Feedback inhibition is when
the product of a reaction inhibits an earlier step in the reaction
a molecule binds to an allosteric site
chemical equilibrium changes the rate of the reaction
students are reluctant to work because of feedback
If you unplugged a freezer then opened the door,
cold energy would transfer to the room to cool it
warmer air molecules would collide with cool air molecules and the collision would average their kinetic energy
a calorie of heat energy is transferred
the specific heat of the freezer increases
Ifn there are 1 x 10-7 moles of H+ and 1 x 10-7 moles of OH- in a solution, it is
acidic
basic
neutral
a buffer
Dehydration synthesis is the
splitting of a polymer by adding water
splitting of a polymer by taking away water
joining of two monomers by adding water
joining of two monomers by taking away water
Hydrolysis is the
splitting of a polymer by adding water
splitting of a polymer by taking away water
joining of two monomers by adding water
joining of two monomers by taking away water
Starch and cellulose are both polymers of glucose monomers, but they differ in
the configuration of the glycosidic bonds
the type of sugar
the types of bonds (covalent/ ionic)
An enzyme with more than one subunit is probably regulated by
feedback inhibition
activation energy
allosteric regulation
DNA
Adhesion happens when
covalent bonds occur
ionic bonds occur
hydrogen bonds occur
you use superglue instead of eyelash glue
Enzymes are specialized for
nothing
1 function
2-3 functions
at least 5 functions
Enantiomers are _____
Identical in every way
Made Up of different atoms
polar covalent bonds
mirror images
Isomers are ________
Mirror Images resulting in a break in the space time continuum causing the British to never colonize America and henceforth not creating a new nation.
Molecules with the same # of Atoms but a different structure and properties
Carbon can form single, double, and triple bonds
True
False
What does Thymine bond with?
Guanine
Cytosine
Adenine
Uracil
In a phospholipid (found in cell membranes), which part is hydrophobic?
the phosphate head
the fatty acid tail
whats a phospholipid?
is Mrs. A looking? Can I play 20-48 cupcakes yet?
Mrs. A made this review so long because
she cares about us and wants us to do well
the test is about 50 questions, so the review should be
she was up late watching Dr. Pimple popper re-runs and got carried away
She saw Matt looking at weird photos yesterday and wanted to make it into a question
