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.
0.2
B.
2
C.
200
D.
20
Question #2
The total magnification for an objective with 40x magnification is ___________.
A.
400x
B.
4x
C.
0.4x
D.
40x
Question #3
_________________is a complex of the cell’s DNA and proteins.
A.
Chlorphyll
B.
Cytoplasm
C.
Chromatin
D.
Cellulose
Question #4
Unlike prokaryotic cells, eukaryotic cells have a ________.
A.
DNA
B.
ribosomes
C.
plasma membrane
D.
nucleus
Question #5
Science is ________.
A.
an organized set of principles for how to behave ethically and morally
B.
the philosophical search for truth
C.
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
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.
experiment, hypothesis, conclusion, experiment
C.
hypothesis, conclusion, experiment, observation
D.
observation, hypothesis, experiment, conclusion
Question #7
________ is an example of an element.
A.
Carbon
B.
Salt
C.
Water
D.
Glucose
Question #8
All atoms of an element have the same number of ________.
A.
toes
B.
neutrons
C.
protons
D.
shoes
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.
protons... neutrons
D.
neutrons... protons
Question #11
This bond formed involves exchanging electrons and results in oppositely charged ions.
A.
polar
B.
ionic
C.
hydrogen
D.
covalent
Question #12
What name is given to bonds that involve the sharing of electrons?
A.
covalent
B.
hydrogen
C.
polar
D.
ionic
Question #13
Water molecules next to each other are joined by ________ bonds.
A.
polar and covalent
B.
ionic
C.
covalent only
D.
hydrogen
Question #14
As water freezes, ___________. Thus, becoming less dense and allowing ice to float and insulating the liquid water below.
A.
its covalent bonds break apart
B.
it gives off a laser light show
C.
its molecules move farther apart
D.
it loses its polarity
Question #15
What name is given to a substance that resists changes in pH?
A.
acid
B.
buffer
C.
water
D.
base
Question #16
Which of the following is an example of a polysaccharide?
A.
sucrose
B.
maltose
C.
glucose
D.
starch
Question #17
Phospholipids are ___________molecules with a polar head group and fatty acid tails.
A.
ionic
B.
excited
C.
charged
D.
amphipathic
Question #18
________ is NOT a lipid.
A.
Olive Oil
B.
Butter
C.
Estrogen
D.
Sucrose
Question #19
Proteins are polymers made up of ________ monomers.
A.
fatty acid
B.
hydrocarbon
C.
amino acid
D.
nucleotide
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.
aphid
B.
monosaccharide
C.
nucleotide
D.
fatty acid
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 rubber; DNA is glue.
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.
DNA
B.
ribosomes
C.
pili
D.
flagella
Question #25
Proteins are modified and prepared for export in this organelle.
A.
Lysosomes
B.
Nucleus
C.
Plasma membrane
D.
Golgi apparatus
Question #26
Which of the following is not a function of the plasma membrane of a eukaryotic cell?
A.
sensing the environment
B.
photosynthesis
C.
regulation of heat change
D.
removal of wastes
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.
golgi apparatus
B.
chloroplast
C.
rough ER
D.
mitochondria
Question #28
This organelle produces lipids and helps liver cells detoxify circulating drugs.
A.
nucleolus
B.
nucleus
C.
smooth ER
D.
ribosomes
Question #29
Lysosomes are responsible for ________.
A.
protein synthesis
B.
cellular respiration
C.
digestion of organic matter inside the cell
D.
lipid synthesis
Question #30
Plant cells, unlike animal cells, are characterized by the presence of a ________.
A.
cell wall
B.
mitochondria
C.
plasma membrane
D.
nucleus
Question #31
Which plant organelle is responsible for photosynthesis?
A.
ribosome
B.
chloroplast
C.
mitochondrion
D.
smooth endoplasmic reticulum
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.
isotonic
B.
metabolically inactive
C.
hypertonic
D.
hypotonic
Question #34
In a hypertonic solution, an animal cell will ________.
A.
shrink
B.
dubstep
C.
expand
D.
stay the same
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.
hydrogenation
C.
exocytosis
D.
ion channels
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.
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.
FALSE
B.
TRUE
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.
not change
B.
increase
C.
decrease
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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