Biology 121 Unit 1 Exam Questions and Correct Answers
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Course
BIO 121
Institution
BIO 121
Which is the correct sequence of increasing organization?
"Molecule, cell, organelle, organ"
"Organelle, tissue, cell, organ"
"Atom, molecule, tissue, cell"
"Organ, tissue, cell, molecule"
"Cell, tissue, organ, organ system" Cell, tissue, organ, organ system
Choose the correct pathway of info...
Biology 121 Unit 1 Exam Questions and
Correct Answers
Which is the correct sequence of increasing organization?
"Molecule, cell, organelle, organ"
"Organelle, tissue, cell, organ"
"Atom, molecule, tissue, cell"
"Organ, tissue, cell, molecule"
"Cell, tissue, organ, organ system" ✅Cell, tissue, organ, organ system
Choose the correct pathway of information flow in cell
RNA _ DNA _ protein
DNA _ RNA _ protein
ER _ DNA _ RNA _ protein
ER _ DNA _ Golgi _ protein ✅
Membrane-bounded vesicles that contain enzymes for oxidizing small organic
molecules with the
formation of hydrogen peroxide are
vacuoles.
vesicles.
glyoxisomes.
lysosomes.
peroxisomes. ✅peroxisomes.
Which pair of organelles is responsible for supplying energy to eukaryotic cells?
Ribosomes and mitochondria
,Chloroplasts and ribosomes
Golgi apparatus and ribosomes
Mitochondria and lysosomes
Chloroplasts and mitochondria ✅Chloroplasts and mitochondria
The cells that line our respiratory tract, and one-celled paramecia both have these short
hair-like
projections.
flagella
microfilaments
centrioles
cilia
pili ✅cilia
Saturated fatty acids and unsaturated fatty acids differ in:
the number of carbon-to-carbon bonds
the consistency at room temperature
the number of hydrogen atoms present
all of the choices are differences between saturated and unsaturated fatty acid ✅all of
the choices are differences between saturated and unsaturated fatty acid
"Which statement most accurately describes the interactions among ER, ribosomes,
and Golgi bodies in exporting protein from the cell
Golgi bodies manufacture proteins, which travel through the ER to be packaged by the
ribosomes for export."
"ER manufactures proteins, which are carried by ribosomes to the Golgi bodies for
export."
"ER manufactures proteins, which are carried by the Golgi bodies to the ribosomes for
export."
,"Ribosomes manufacture proteins, which travel through the ER and are packaged by
the Golgi bodies for export."
"Ribosomes make proteins that travel through the Golgi bodies to the ER, which exports
them." ✅"Ribosomes manufacture proteins, which travel through the ER and are
packaged by
the Golgi bodies for export.
Which of the followings is not a property of all living organisms?
responding to the environment.
acquisition of materials and energy.
care for their offspring.
reproduction. ✅care for their offspring.
pH of a solution A =3, solution B=6. Which of the following statements is correct?
B is more acidic, by a magnitude of 3x
B is less acidic, by a magnitude of 3x
B is more acidic, by a magnitude of 1000x
B is less acidic, by a magnitude of 1000x ✅B is less acidic, by a magnitude of 1000x
Which of the following reactions requires the removal of water to form a covalent bond
Which of the following features is NOT found in a bacterial cell?
Nucleus and Endoplasmic reticulum
, DNA
Cell wall
Plasma membrane
Ribosomes ✅nucleus and endoplasmic reticulum
Sweating is a useful cooling mechanism for humans because water
takes up a great deal of heat in changing from its liquid state to its gaseous state.
takes up a great deal of heat in changing from its solid state to its liquid state.
can exist in two states at temperatures common on Earth.
is an outstanding solvent.
ionizes readily. ✅takes up a great deal of heat in changing from its liquid state to its
gaseous
state.
The four polypeptides that are joined together to make hemoglobin represent which
level of protein
organization
Primary structure
Secondary structure
Tertiary structure
Quaternary structure ✅Quaternary structure
Some biologists study the complex interactions of animals and plants in forests or
prairies. Such
ecology field research often produces slightly different results for different researchers.
In contrast,
ecology experiments that are run indoors with one organism in a terrarium usually
produce results
that are repeatable. What is the most likely explanation?
The scientific method is only useful in laboratory settings.
It is not possible to establish a control group outside of a laboratory.
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