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Question 1 (5 points)
A scientist discovers a putative new life form and notes
that the creature’s body is bilaterally symmetrical and consequently satisfies
the criteria for defining life in which of the following categories?
Question 1 options:
evolution
growth
and development
order
none,
symmetry is not a basic characteristic of life
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Question 2 (5 points)
Which of the following lists correctly presents levels of
organization from most complex to simplest?
Question 2 options:
ecosystem,
community, organelle, cell
macromolecule,
population, community, ecosystem
biosphere,
community, organism, organ system
cell,
organelle, atom, molecule
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Question 3 (5 points)
Which of the following statements must be *FALSE*?
Question 3 options:
Species
A and B belong to different phylum, but the same domain
Species
A and B belong to the same kingdom, but different phylum
Species
A and B belong to different classes, but the same kingdom
Species
A and B belong to the same class, but different phylum
Species
A and B belong to the same kingdom, but different orders
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Question 4 (5 points)
What is the difference between prokaryotes and eukaryotes?
Question 4 options:
Eukaryotic
cells have a nucleus; prokaryotic cells do not.
Prokaryotes
belong to either the plant or the animal kingdom; eukaryotes belong to the
bacteria kingdom.
Prokaryotic
cells have a nucleus; eukaryotic cells do not.
Eurkarytoes
belong to either the plant or the animal kingdom; prokarytoes belong to the
fungi kingdom.
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Question 5 (5 points)
What is an integrated explanation of numerous hypotheses
known as?
Question 5 options:
A
scientific fact
A
scientific law
A
control group
A
scientific theory
An
educated guess
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Question 6 (5 points)
A scientist observes that when she opens the back door of
her house to let her cat out, the songs of a certain species of bird abruptly
change. She wants to follow up on her observations with an informal experiment.
Which of the following is the best hypothesis for explaining the birds’ song
changes?
Question 6 options:
The
bird species switches from song to warning call whenever it sees a potential
predator.
The
bird species has a variety of songs that it sings, regardless of what is
happening in its environment.
Why
does the bird song change when I let the cat out?
The
birds stop singing because they are afraid of the cat.
Question 7 (5 points)
A scientist wants to determine whether a new chemical she
isolated can cure a certain disease. To test her hypothesis that the new
chemical cures the disease more effectively than current treatments, she
infects mice with the disease and gives them the new chemical. She then
assesses how many mice were cured of the disease. What is missing from her
experimental design?
Question 7 options:
She is
not missing anything—her experimental design is adequate to test her
hypothesis.
She is
missing an experimental group of mice that received a half dose of the new
chemical.
There
are no variables in the experiment
She is
missing a control group of mice that did not receive the new chemical.
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Question 8 (5 points)
The attempt to disprove a hypothesis is accomplished by
which of the following tasks?
Question 8 options:
conducting
experiments
making
initial observations
proposing
a theory
making
an educated guess
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Question 9 (5 points)
Order the steps of the scientific method from the first step
(1) to the last ().
Question 9 options:
State
Hypothesis
Conduct
Experiment
Report
Results
Make
Observation
Analyze
Data
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Question 10 (5 points)
A nutritionist would like to test whether green coffee
extract will impact weight loss in middle-aged women. Which of the following is
the best hypothesis for the experiment?
Question 10 options:
Will
green coffee extract help middle-aged women lose weight?
Middle-aged
women taking green coffee extract pills daily will lose more weight than
middle-aged women not taking green coffee extract pills.
Green
coffee extract helps people lose weight
Women
drinking coffee will most likely lose weight.
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Question 11 (5 points)
You have formulated a hypothesis: “Blueberries contain
more vitamin C than raspberries.” To test your hypothesis you measure
vitamin C levels in 20 blueberries and 20 raspberries from bushes that were
grown in the same area under the same environmental conditions (temperature,
rain, sunlight). What is the independent variable in this experiment?
Question 11 options:
The
type of soil and the amount of rain
Vitamin
C levels
The
type of fruit
The
amount of sun
The
large sample size and repeated experiment
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Question 12 (5 points)
What is the atomic number of an element that has 33 protons
and 30 neutrons?
Question 12 options:
33
30
63
Not
enough information to tell
100
Question 13 (5 points)
Consider the following chemical equation which depicts the
mechanism by which humans maintain an acid-base balance in the blood:
H+ + HCO3- ? H2CO3
? H20 + CO2
What happens if the carbon dioxide on the right is not
removed from the blood via the lungs?
Question 13 options:
The
reaction will be driven toward the left, resulting in the blood becoming more
acidic.
The
reaction will be driven toward the left, resulting in the blood becoming more
basic.
The
reaction will be driven toward the center, and the pH of the blood will remain
neutral.
The
reaction will be driven towards the right, and the pH of the blood will become
more acidic.
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Question 14 (5 points)
Which of the following statements correctly identifies and
describes the type of covalent bond found between oxygen and hydrogen in water
molecules?
Question 14 options:
polar
covalent bonds because hydrogen is more electronegative than oxygen
hydrogen
bonds because hydrogen is more electronegative than oxygen
polar
covalent bonds because oxygen is more electronegative than hydrogen
hydrogen
bonds because oxygen is more electronegative than hydrogen
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Question 15 (5 points)
What type of chemical bond is responsible for the 3
dimensional structure of nucleic acids and proteins?
Question 15 options:
covalent
bonds
ionic
bonds
hydrogen
bonds
non-polar
covalent bonds
Question 16 (5 points)
Which type of chemical bond connect amino acids together?
Question 16 options:
phosphodiester
hydrogen
peptide
ionic
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Question 17 (5 points)
Neon has an atomic number of 10 and an atomic mass of
approximately 20. How many neutrons does neon have?
Question 17 options:
30
10
5
20
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Question 18 (5 points)
Which of the following statements about this atom are FALSE?
Select all that apply.
Question 18 options:
This
atom has a full outer shell
This
atom has 10 electrons total
This
atom has 6 electrons in the outer shell
This electron
has 4 electrons in the inner shell
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