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WorksheetsAP Bio Unit 1 Chemistry of Life
Total questions: 17
Worksheet time: 9mins
Cohesive forces between water molecules and adhesive forces between water molecules enable ______ to occur
surface tension
capillary action
photosynthesis
ice floating on water
Describe the bonds in water
covalent bonds connect H and O of one water molecule; hydrogen bonds connect different water molecules
ionic bonds connect H and O of one water molecule; covalent bonds different water molcules
hydrogen bonds connect H and O of one water molecule; hydrogen bonds connect different water molcules
hydrogen bonds connect H and O of one water molecule; covalent bonds connect different water molcules
Large bodies of water help to keep nearby climates from being too hot or too cold because they
absorb heat in the fall and slowly release heat in the spring
absorb heat in the spring and slowly release that heat in the fall
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
The fact that ice floats on water is due to the fact that water's solid form ____ than its liquid form
is more dense
is less dense
is more polar
has less surface tension
Which statement correctly describes hydrolysis reactions?
Hydrolysis adds water to build a larger molecule
Hydrolysis removes water to build a larger molecule
Hydrolysis adds water to split a molecule
hydrolysis removes water to split a molecule
Which of the following are the strongest interactions?
Covalent bonds
ionic bonds
hydrogen bonds
Van der Waals forces
Mammals sweat to regulate body temperature (evaporative cooling). What property of water is responsible?
water's change in density when it condenses
water's ability to dissolve molecules in air
the release of heat by the formation of hydrogen bonds
the absorption of heat by during a phase change
Which describes the bonds in a DNA molecule?
covalent bonds in the backbone and hydrogen bonds holding the bases together
covalent bonds in the backbone and ionic bonds holding the bases together
hydrogen bonds in the backbone and ionic bonds holding the bases together
hydrogen bonds in the backbone and ionic bonds holding the bases together
A protein made of only one polypeptide is heated to a high temperature, breaking Hydrogen bonds. What level(s) of protein structure would be affected?
all - primary, secondary, tertiary, quaternary
primary, secondary, tertiary
secondary and tertiary
secondary, tertiary, and quaternary
In what ways do DNA and RNA differ?
DNA is double stranded and RNA contains deoxyribose
DNA contains thymine and RNA contains ribose
DNA contains ribose and RNA is single-stranded
DNA contains uracil and RNA contains ribose
A molecule is found that contains only C, H, O, and P. What type of macromolecule could it be?
carbohydrate
lipid
protein
nucleic acid
Hemoglobin protein contains 2 polypeptides. If there is a mutation in DNA that substitutes an amino acid to produce sickle cell anemia hemoglobin, what level(s) of protein structure are affected?
all - primary, secondary, tertiary, quaternary
primary, secondary, tertiary
secondary and tertiary only
secondary, tertiary, and quaternary
Which of the stream types had a statistically lower macroscopic invertebrate species diversity than the seasonal streams?
transitional streams only
intermitten streams only
perennial and intermittent streams only
transitional and intermittent streams only
Marchesini's biomed class is testing diameter of blood spatter dropped from different heights. What is the dependent variable?
the height from which the blood is dropped
the diameter of the blood spatter
the type of blood
the temperature of the blood
Which of the following is NOT in a nucleotide?
5-carbon sugar
nitrogenous base
phosphate group
R group
Which matches the monomer with the polymer?
nucleic acids are made up of amino acids
carbohydrates are made up of monosaccharides
proteins are made up of nitrogenous bases
lipids are made up of triglycerides
A scientist is testing the effect of pH on bacteria growth over 1 hour. What type of graph should the scientist use?
bar graph
line graph
pie chart
scatterplot
