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.
2
B.
0.2
C.
20
D.
200
Question #2
The total magnification for an objective with 40x magnification is ___________.
A.
40x
B.
0.4x
C.
400x
D.
4x
Question #3
_________________is a complex of the cell’s DNA and proteins.
A.
Chlorphyll
B.
Chromatin
C.
Cytoplasm
D.
Cellulose
Question #4
Unlike prokaryotic cells, eukaryotic cells have a ________.
A.
ribosomes
B.
nucleus
C.
plasma membrane
D.
DNA
Question #5
Science is ________.
A.
the philosophical search for truth
B.
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
C.
an organized set of principles for how to behave ethically and morally
D.
the inquiry-based effort to describe and explain nature
Question #6
Which of the following are the correct order of the scientific method?
A.
conclusion, observation, experiment, hypothesis
B.
observation, hypothesis, experiment, conclusion
C.
hypothesis, conclusion, experiment, observation
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.
neutrons
C.
protons
D.
toes
Question #9
An atom's electrons are found in its nucleus.
A.
TRUE
B.
FALSE
Question #10
Isotopes of an element have the same number of ________ and different numbers of ________.
A.
protons... electrons
B.
electrons... protons
C.
neutrons... protons
D.
protons... neutrons
Question #11
This bond formed involves exchanging electrons and results in oppositely charged ions.
A.
polar
B.
covalent
C.
ionic
D.
hydrogen
Question #12
What name is given to bonds that involve the sharing of electrons?
A.
ionic
B.
covalent
C.
hydrogen
D.
polar
Question #13
Water molecules next to each other are joined by ________ bonds.
A.
covalent only
B.
ionic
C.
hydrogen
D.
polar and covalent
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.
its covalent bonds break apart
C.
its molecules move farther apart
D.
it gives off a laser light show
Question #15
What name is given to a substance that resists changes in pH?
A.
buffer
B.
water
C.
acid
D.
base
Question #16
Which of the following is an example of a polysaccharide?
A.
starch
B.
maltose
C.
sucrose
D.
glucose
Question #17
Phospholipids are ___________molecules with a polar head group and fatty acid tails.
A.
excited
B.
ionic
C.
amphipathic
D.
charged
Question #18
________ is NOT a lipid.
A.
Sucrose
B.
Butter
C.
Olive Oil
D.
Estrogen
Question #19
Proteins are polymers made up of ________ monomers.
A.
fatty acid
B.
amino acid
C.
nucleotide
D.
hydrocarbon
Question #20
Glucose is an example of an organic molecule.
A.
FALSE
B.
TRUE
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.
nucleotide
B.
monosaccharide
C.
fatty acid
D.
aphid
Question #23
How does RNA differ from DNA?
A.
RNA is a polymer of amino acids; DNA is a polymer of nucleotides.
B.
RNA is found on Cybertron; DNA is found in The Upside Down.
C.
RNA is single-stranded; DNA is double-stranded.
D.
RNA is rubber; DNA is glue.
Question #24
Which of the following is a feature of prokaryotic cells that is involved in adhesion to a surface?
A.
DNA
B.
flagella
C.
ribosomes
D.
pili
Question #25
Proteins are modified and prepared for export in this organelle.
A.
Nucleus
B.
Plasma membrane
C.
Golgi apparatus
D.
Lysosomes
Question #26
Which of the following is not a function of the plasma membrane of a eukaryotic cell?
A.
regulation of heat change
B.
removal of wastes
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.
mitochondria
D.
golgi apparatus
Question #28
This organelle produces lipids and helps liver cells detoxify circulating drugs.
A.
smooth ER
B.
ribosomes
C.
nucleolus
D.
nucleus
Question #29
Lysosomes are responsible for ________.
A.
lipid synthesis
B.
digestion of organic matter inside the cell
C.
protein synthesis
D.
cellular respiration
Question #30
Plant cells, unlike animal cells, are characterized by the presence of a ________.
A.
nucleus
B.
plasma membrane
C.
mitochondria
D.
cell wall
Question #31
Which plant organelle is responsible for photosynthesis?
A.
chloroplast
B.
smooth endoplasmic reticulum
C.
mitochondrion
D.
ribosome
Question #32
In Active Transport, cells rely on diffusion to move small molecules into and out of the cell.
A.
FALSE
B.
TRUE
Question #33
A cell that neither gains nor loses a net amount of water is immersed in a ________solution.
A.
hypotonic
B.
isotonic
C.
hypertonic
D.
metabolically inactive
Question #34
In a hypertonic solution, an animal cell will ________.
A.
dubstep
B.
stay the same
C.
shrink
D.
expand
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.
endocytosis
B.
ion channels
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.
TRUE
B.
FALSE
Question #39
The purpose of the control group is to serve as a comparison for experimental group.
A.
TRUE
B.
FALSE
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.
FALSE
B.
TRUE
Question #42
Only salts like NaCl contribute to the Tonicity of an aqueous solution.
A.
FALSE
B.
TRUE
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.
increase
C.
not change
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.
demosomes
B.
tight junctions
C.
gap junctions
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