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Biology 121 Unit 1 Exam Questions and Correct Answers
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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...

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  • August 13, 2024
  • 42
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • biology 121 unit 1 exam questions and correct answ
  • which is the correct sequence of increasing organi
  • cell tissue organ organ system cell tissue

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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

Glycogen _ glucose subunits

Peptide _ alanine + glycine

Cellulose _ glucose

Glucose + galactose _ lactose

Fat _ fatty acids + glycerol ✅Glucose + galactose _ lactose

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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