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WorksheetsAP Bio Unit 1 Review
Total questions: 26
Worksheet time: 13mins
Which element(s) make up about 96% of living matter?
carbon
hydrogen
nitrogen
oxygen
all of these
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
Glycosidic bonds happen in
carbohydrates
lipids
proteins
nucleic acids
Peptide bonds happen in
carbohydrates
lipids
proteins
nucleic acids
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. 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
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
Adhesion happens when
covalent bonds occur
ionic bonds occur
hydrogen bonds occur
you use superglue instead of eyelash glue
What does Thymine bond with?
Guanine
Cytosine
Adenine
Uracil
Nitrogen (N) is more electronegative than hydrogen (H). Which of the following is a correct statement about the atoms in ammonia (NH3)?
Each hydrogen atom has a partial positive charge; the nitrogen atom has a partial negative charge.
Ammonia has an overall positive charge.
Ammonia has an overall negative charge.
The nitrogen atom has a partial positive charge; each hydrogen atom has a partial negative charge.
A covalent bond is likely to be polar when ________.
the two atoms sharing electrons are of the same elements
one of the atoms sharing electrons is more electronegative than the other atom
carbon is one of the two atoms sharing electrons
the two atoms sharing electrons are equally electronegative
Which of the following is broken when water evaporates?
polar covalent bonds
nonpolar covalent bonds
hydrogen bonds
ionic bonds
Van der Waals interactions may result when ________.
a hydrogen atom loses an electron
electrons are not symmetrically distributed in a molecule
two polar covalent bonds react
molecules held by ionic bonds react with water
A solution with a pH of 2 has how many more protons in it than a solution with a pH of 4?
1000 times more
5 times more
100 times more
10 times more
Which of the following statements is true about buffer solutions?
They maintain a relatively constant pH when either acids or bases are added to them.
They maintain a constant pH of 7.
They fluctuate in pH when either acids or bases are added to them.
They maintain a constant pH when acids are added to them but not when bases are added to them.
How many molecules of water are released during the polymerization of a 30 monomer-long cellulose molecule?
60
19
30
29
Polymer's split apart to form ________, by __________.
monomers, hydrolysis
monomers, dehydration synthesis
amino acids, hydrolysis
amino acids, dehydration synthesis
What makes lipids/fats hydrophobic?
presence of relatively nonpolar C—H bonds
their long carbon skeleton
the glycerol moiety
the carboxyl group at one end of the molecule
How do phospholipids interact with water molecules?
Phospholipids dissolve in water.
The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract).
The polar heads interact with water; the nonpolar tails do not.
Phospholipids do not interact with water because water is polar and lipids are nonpolar.
Which of the following best describes a model organism?
It has been chosen for study by early biologists.
It is often pictured in textbooks and is easy for students to imagine.
It is small, inexpensive to raise, and lives a long time.
It is well studied, it is easy to grow, and results are widely applicable.
