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WorksheetsAP Biology Unit 1 Review
Total questions: 73
Worksheet time: 5hrs 46mins
The hypothesis that two groups are the same.
Alternative hypothesis
Experimental hypothesis
Null hypothesis
Statistical hypothesis
Which of the following is NOT a null hypothesis?
Cats are no smarter than dogs
Americans enjoy hot dogs twice as much as hamburgers
There is no difference in test scores of students who drink coffee and those that don't
Students spend as much time on TikTok as on Instagram
The most frequently occurring score in a distribution is known as the
Range
Mean
Median
Mode
If the findings of the research showed that the difference between the experimental and control group was relatively large, it would be said that it is
randomized
had confounding variables
statistically significant
had a standard deviation
In an experiment, the variable that changes in response to independent variable is known as
Independent variable
Dependent variable
Changing variable
Control variable
The middle score in a distribution, half scores are above it and half are below it, is known as what?
Standard deviation
Mean
Mode
Median
The measure of how much scores vary around the mean is known as the
Standard deviation
Scatter plot
Median
Range
The symbol σ or s refers to
the mean
the standard deviation
the standard error of the mean
the chi square
SE refers to the...
mean
standard deviation
standard error of the mean
chi square
The symbol Σ means
sample mean
square root of all values
sum of all values
sample size
The middle number in a set of data is called the...
mean
standard deviation
median
mode
What is the standard error of the optimum soil temperature for germination rate?
1.78
0.91
2.89
5.34
A farmer is told the average banana tree takes 12 months from the time the rhizome is planted until it yields fruit. His fields take 11, 14, 16, and 14 months. Is the null hypothesis of 12 months accepted?
accepted at 2.08
accepted at 1.44
accepted at 8.33
rejected at 8.33
Which of the following statements is true pertaining to the graph given?
There are more Rainbow Pitta than Cockatoo
There are 17.5 million Guildian Finch
Guildian Finch have the least accurate population measurement.
Cockatoo and Rainbow Pitta have no statistical difference in population.
Which of the following scenarios would lead to a large standard deviation, but a low standard error of the mean?
1,650 students at FHC are surveyed on how much they like Genetics on a scale form 1 - 100.
450 doctors across the country were surveyed on the number of hours they spend at work.
The length of 12 roly-poly bugs is taken for St. Charles County.
Steve Prefontaine 1,200 meter time is recorded for 5 trials on different days.
What does a large standard deviation indicate?
The data is clustered closely to the mean.
The data is spread widely around the mean.
The data is normally distrubuted.
The data is not normally distributed.
What does standard deviation represent?
Deviation of negative values from a mean.
Deviation of positive values from a mean.
Spread of the variability of data around a mean.
Statistical significance of variation around a mean.
What percentage of the normal distribution lies within +/- 1 standard deviation of the mean?
98%
65%
95%
68%
What do the error bars in the graph say about data?
The data for Group 1 has a lower mean value.
The data for Group 2 has a higher degree of variability.
The data for Group 1 has a higher degree of accuracy.
The data for Group 1 and 2 has the same degree of coefficient of variation.
Which of the following molecules would contain a polar covalent bond?
Cl2
NaCl
H2O
CH4
Which of the following is most closely related to the secondary structure of proteins?
lipids
peptide bonds
alpha helix
cellulose
The process by which protein conformation is lost or broken down is
dehydration synthesis
translation
denaturation
hydrolysis
Which of the macromolecules below could be structural parts of the cell, enzymes, or involved in cell movement or communication?
nucleic acids
proteins
lipids
carbohydrates
The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?
a polar covalent bond
an ionic bond
a hydration shell
a hydrogen bond
Which two functional groups are always found in amino acids?
amine and sulfhydryl
hydroxyl and carboxyl
carboxyl and amine
phosphate group and nitrogenous base
The tremendous variation and unique properties of proteins are most likely a result of
interactions between R groups of the amino acids
hydrogen bonds lining amino acids
the sequence of amino acids in the primary structure of the protein
peptide bonds lining amino and carboxyl groups
Water is an excellent solvent. Select the property that justifies this statement.
as a polar molecule, it can surround and dissolve ionic and polar molecules
it forms ionic bonds with ions, hydrogen bonds with polar molecules, and hydrophobic interactions with non polar molecules
it forms hydrogen bonds with itself so cohesion is possible
it is liquid and will adhere to many substances
An organic compound that is composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio is known as a
lipid
carbohydrate
protein
nucleic acid
If the pH of a solution is decreased from 7 to 6, it means that the concentration of
H+ has decreased to 1/10 of what it was at pH 7
H+ has increased 10 times what it was at pH 7
OH- has increased 10 times what it was at pH 7
OH- has increased by 1/7 of what it was
Describe COHESION.
Water molecules attracted to other substances.
Water molecules climbing upwards against the force of gravity.
Water molecules dissolving many substances because of its polarity.
Water molecules attracted to other water molecules.
A water droplet sticking to a glass is an example of...
Cohesion
Adhesion
Surfactant
Meniscus
Because of the unique properties of water associated with hydrogen bonding, water evaporates from pores on leaves of plants and draws water molecules in a continuous chain from the roots up through the vascular tissues of plants. Which of these groups of terms describes the process and properties of water that explain this?
adhesion, cohesion, and translocation
adhesion, cohesion, and transcription
cohesion, hybridization, and transpiration
cohesion, adhesion, and transpiration
Which list of compounds characterizes RNA?
a phosphate group, deoxyribose, and uracil
a phosphate group, ribose, and uracil
a phosphate group, ribose, and thymine
an amino group, deoxyribose, and uracil
Hydrolysis is involved in which of the following?
formation of starch, a polysaccharide, from monomers of glucose
hydrogen bond formation between nitrogen bases of nucleic acids
peptide bond formation between amino acids to form proteins
the digestion of sucrose, a disaccharide to its monomers of glucose and fructose
Polymers of carbohydrates and proteins are all synthesized from monomers by which of the following processes?
the joining of monosaccharides
hydrolysis
dehydration synthesis
signal transduction
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
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
Polymer's split apart to form ________, by __________.
monomers, hydrolysis
monomers, dehydration synthesis
amino acids, hydrolysis
amino acids, dehydration synthesis
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.
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.
The difference of DNA and RNA is the presence of
Uracil
Guanine
Adenine
Cytosine
This is the macromolecule that contains the elements: C, H, O, N, and P
nucleic acid
lipid
protein
carbohydrate
What element is the basis for all organic molecules?
nitrogen
hydrogen
oxygen
carbon
What process is happening that splits the sucrose molecule into one glucose and one fructose molecule?
dehydration synthesis
hydrolysis
capillary action
carbon cycle
This is the monomer of a nucleic acid
nucleotide
glycerol
monosaccharide
amino acid
What sets different amino acids apart from each other?
amine group
carboxyl group
central carbon atom
R group
Which lipid molecule is an unsaturated fat?
top
bottom
Which lipid molecule is a saturated fat?
top
bottom
A growing strand of DNA bonds with new nucleotides at what end?
3' end
5' end
What level of protein structure is in the image?
primary
secondary
tertiary
quarternary
What level of protein structure is in the image?
primary
secondary
tertiary
quarternary
What level of protein structure is in the image?
primary
secondary
tertiary
quarternary
This type of carbohydrate is made by autotrophs, like plants, for long term energy storage
glycogen
cellulose
starch
This carbohydrate is used for when extra glucose is needed quickly in animals. It's also stored in muscles and our liver
starch
glycogen
cellulose
This carbohydrate is made by plants for use in their cell wall for protection and support
starch
glycogen
cellulose
The macromolecule that has amino acids as its monomer is...
lipid
carbohydrate
nucleic acid
protein
