Biology 122 - Introduction to Biology » Summer 2021 » Exam 1
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Question #1
A cell has a diameter of 0.02 centimeters. This is the equivalent to ____________ millimeters.
A.
200
B.
20
C.
2
D.
0.2
Question #2
The total magnification for an objective with 40x magnification is ___________.
A.
4x
B.
0.4x
C.
40x
D.
400x
Question #3
_________________is a complex of the cell’s DNA and proteins.
A.
Chlorphyll
B.
Cellulose
C.
Chromatin
D.
Cytoplasm
Question #4
Unlike prokaryotic cells, eukaryotic cells have a ________.
A.
ribosomes
B.
DNA
C.
plasma membrane
D.
nucleus
Question #5
Science is ________.
A.
the inquiry-based effort to describe and explain nature
B.
an organized set of principles for how to behave ethically and morally
C.
the philosophical search for truth
D.
the philosophical search for truth, an organized set of principles for how to behave ethically and morally, and the inquiry-based effort to describe and explain nature
Question #6
Which of the following are the correct order of the scientific method?
A.
hypothesis, conclusion, experiment, observation
B.
observation, hypothesis, experiment, conclusion
C.
conclusion, observation, experiment, hypothesis
D.
experiment, hypothesis, conclusion, experiment
Question #7
________ is an example of an element.
A.
Carbon
B.
Glucose
C.
Salt
D.
Water
Question #8
All atoms of an element have the same number of ________.
A.
shoes
B.
protons
C.
toes
D.
neutrons
Question #9
An atom's electrons are found in its nucleus.
A.
FALSE
B.
TRUE
Question #10
Isotopes of an element have the same number of ________ and different numbers of ________.
A.
protons... electrons
B.
protons... neutrons
C.
electrons... protons
D.
neutrons... protons
Question #11
This bond formed involves exchanging electrons and results in oppositely charged ions.
A.
polar
B.
covalent
C.
hydrogen
D.
ionic
Question #12
What name is given to bonds that involve the sharing of electrons?
A.
polar
B.
hydrogen
C.
covalent
D.
ionic
Question #13
Water molecules next to each other are joined by ________ bonds.
A.
polar and covalent
B.
ionic
C.
hydrogen
D.
covalent only
Question #14
As water freezes, ___________. Thus, becoming less dense and allowing ice to float and insulating the liquid water below.
A.
it loses its polarity
B.
it gives off a laser light show
C.
its covalent bonds break apart
D.
its molecules move farther apart
Question #15
What name is given to a substance that resists changes in pH?
A.
buffer
B.
water
C.
base
D.
acid
Question #16
Which of the following is an example of a polysaccharide?
A.
maltose
B.
sucrose
C.
glucose
D.
starch
Question #17
Phospholipids are ___________molecules with a polar head group and fatty acid tails.
A.
ionic
B.
excited
C.
amphipathic
D.
charged
Question #18
________ is NOT a lipid.
A.
Olive Oil
B.
Estrogen
C.
Sucrose
D.
Butter
Question #19
Proteins are polymers made up of ________ monomers.
A.
fatty acid
B.
amino acid
C.
hydrocarbon
D.
nucleotide
Question #20
Glucose is an example of an organic molecule.
A.
TRUE
B.
FALSE
Question #21
Eukaryotic cells contain DNA in the Nucleus but NOT in the Mitochodria.
A.
FALSE
B.
TRUE
Question #22
Nucleic acids are polymers made up of ________ monomers.
A.
monosaccharide
B.
fatty acid
C.
nucleotide
D.
aphid
Question #23
How does RNA differ from DNA?
A.
RNA is rubber; DNA is glue.
B.
RNA is a polymer of amino acids; DNA is a polymer of nucleotides.
C.
RNA is found on Cybertron; DNA is found in The Upside Down.
D.
RNA is single-stranded; DNA is double-stranded.
Question #24
Which of the following is a feature of prokaryotic cells that is involved in adhesion to a surface?
A.
flagella
B.
pili
C.
ribosomes
D.
DNA
Question #25
Proteins are modified and prepared for export in this organelle.
A.
Golgi apparatus
B.
Nucleus
C.
Plasma membrane
D.
Lysosomes
Question #26
Which of the following is not a function of the plasma membrane of a eukaryotic cell?
A.
removal of wastes
B.
regulation of heat change
C.
photosynthesis
D.
sensing the environment
Question #27
During a race such as a marathon, the skeletal muscle cells in your legs use a lot of energy (ATP) to continually contract and power your muscles. What organelle is responsible for providing this energy?
A.
rough ER
B.
chloroplast
C.
golgi apparatus
D.
mitochondria
Question #28
This organelle produces lipids and helps liver cells detoxify circulating drugs.
A.
smooth ER
B.
nucleus
C.
ribosomes
D.
nucleolus
Question #29
Lysosomes are responsible for ________.
A.
lipid synthesis
B.
cellular respiration
C.
digestion of organic matter inside the cell
D.
protein synthesis
Question #30
Plant cells, unlike animal cells, are characterized by the presence of a ________.
A.
nucleus
B.
mitochondria
C.
plasma membrane
D.
cell wall
Question #31
Which plant organelle is responsible for photosynthesis?
A.
smooth endoplasmic reticulum
B.
mitochondrion
C.
chloroplast
D.
ribosome
Question #32
In Active Transport, cells rely on diffusion to move small molecules into and out of the cell.
A.
TRUE
B.
FALSE
Question #33
A cell that neither gains nor loses a net amount of water is immersed in a ________solution.
A.
hypertonic
B.
isotonic
C.
hypotonic
D.
metabolically inactive
Question #34
In a hypertonic solution, an animal cell will ________.
A.
dubstep
B.
stay the same
C.
expand
D.
shrink
Question #35
Mechanism for transport of a large particle or a large number of molecules in which the cell membrane wraps around a target and then forms a vesicle to bring those materials into the cell.
A.
ion channels
B.
endocytosis
C.
exocytosis
D.
hydrogenation
Question #36
A pH of 14 is considered acidic
A.
FALSE
B.
TRUE
Question #37
A.
FALSE
B.
TRUE
Question #38
The statement below is an example of a Null Hypothesis. There is an increase in the thickness of hair that is shaved relative to hair that is not shaved.
A.
FALSE
B.
TRUE
Question #39
The purpose of the control group is to serve as a comparison for experimental group.
A.
FALSE
B.
TRUE
Question #40
In a double-blind study both the scientists and the test subjects know what group they have been assigned to.
A.
TRUE
B.
FALSE
Question #41
An enzyme acts as a catalyst by lowering the activation energy of a reaction.
A.
TRUE
B.
FALSE
Question #42
Only salts like NaCl contribute to the Tonicity of an aqueous solution.
A.
TRUE
B.
FALSE
Question #43
The Cell Theory states that all cells spontaneously arise from abiotic components such as crystals and minerals.
A.
FALSE
B.
TRUE
Question #44
A red blood cell is placed in a test tube with pure distilled water. The overall volume of the cell will ______________.
A.
decrease
B.
not change
C.
increase
Question #45
Which of the types of proteins below would you expect to play a critical role in preventing stomach acid (damaging to tissues outside of the stomach) from leaking in between the epithelial cells that form the lining of the stomach
A.
gap junctions
B.
tight junctions
C.
demosomes
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