BIO 152 EXAM 1 WITH CORRECT
ANSWERS 2025
As a general rule of thumb, water diffuses across membranes
from __________ content to _________ content. correct answers
>> low solute; high solute
Which of the following best describes when a molecule moves
across a plasma membrane, from high concentration to low
concentration, through a protein transporter? correct answers
>> facilitated diffusion
A cation has no membrane transporters for it to cross a cell's
plasma membrane. However, there is a concentration gradient.
The ion has a high concentration on the outside and a low
concentration on the inside of the cell. Based on this information,
we can predict that the cation will: correct answers >> not
be able to cross the membrane at this time
A graduate student is studying a new lineage of eukaryote, and
doesn't know how to tell if the lineage is simple multicellular or
complex multicellular. Knowing you just completed the BIO 152
lectures on the origin and evolution of multicellularity, he turns to
you for advice. What would you tell him to look for, that would
definitively identify the lineage as complex multicellular and not
simple multicellular? correct answers >> look for the
presence of different specialized cells in a multicellular body form
Which of the following organisms have plasma membranes made
of phospholipid bilayers? Select all that apply. correct answers
>>
, In the endomembrane system, a protein produced by the
endoplasmic reticulum may then be directed to the __________ for
processing and sorting. correct answers >> golgi
Which class of biological molecule is not found in the plasma
membrane of a cell? correct answers >> nucleic acids
Suppose a scientist were to remove all the water from the
intracellular and extracellular spaces of an artificial cell
membrane made of only phospholipids. She then replaced the
aqueous solvent with oil (lipid). Finally, she agitated (shook) the
cells so that the cells could adjust to the new solvent. What would
this likely do to the structure of the phospholipid bilayer?
correct answers >> the phospholipids would invert themselves.
Thus, the phosphate heads would face towards the interior of the
bilayer, and the fatty acid tails would face outwards towards the
intracellular and extracellular spaces.
Eukaryotes include: Select all that apply. correct answers >>
unicellular forms, complex multicellular forms, simple
multicellular forms.
Metabolic pathways are often controlled through the process of
_______________. correct answers >>
A single-celled amoeba is placed in an aquarium in a lab, and
immediately begins shriveling up. This change in volume of the
amoeba tells you that the aquarium water is __________ compared
to the fluid inside the cell. correct answers >> hypertonic
ANSWERS 2025
As a general rule of thumb, water diffuses across membranes
from __________ content to _________ content. correct answers
>> low solute; high solute
Which of the following best describes when a molecule moves
across a plasma membrane, from high concentration to low
concentration, through a protein transporter? correct answers
>> facilitated diffusion
A cation has no membrane transporters for it to cross a cell's
plasma membrane. However, there is a concentration gradient.
The ion has a high concentration on the outside and a low
concentration on the inside of the cell. Based on this information,
we can predict that the cation will: correct answers >> not
be able to cross the membrane at this time
A graduate student is studying a new lineage of eukaryote, and
doesn't know how to tell if the lineage is simple multicellular or
complex multicellular. Knowing you just completed the BIO 152
lectures on the origin and evolution of multicellularity, he turns to
you for advice. What would you tell him to look for, that would
definitively identify the lineage as complex multicellular and not
simple multicellular? correct answers >> look for the
presence of different specialized cells in a multicellular body form
Which of the following organisms have plasma membranes made
of phospholipid bilayers? Select all that apply. correct answers
>>
, In the endomembrane system, a protein produced by the
endoplasmic reticulum may then be directed to the __________ for
processing and sorting. correct answers >> golgi
Which class of biological molecule is not found in the plasma
membrane of a cell? correct answers >> nucleic acids
Suppose a scientist were to remove all the water from the
intracellular and extracellular spaces of an artificial cell
membrane made of only phospholipids. She then replaced the
aqueous solvent with oil (lipid). Finally, she agitated (shook) the
cells so that the cells could adjust to the new solvent. What would
this likely do to the structure of the phospholipid bilayer?
correct answers >> the phospholipids would invert themselves.
Thus, the phosphate heads would face towards the interior of the
bilayer, and the fatty acid tails would face outwards towards the
intracellular and extracellular spaces.
Eukaryotes include: Select all that apply. correct answers >>
unicellular forms, complex multicellular forms, simple
multicellular forms.
Metabolic pathways are often controlled through the process of
_______________. correct answers >>
A single-celled amoeba is placed in an aquarium in a lab, and
immediately begins shriveling up. This change in volume of the
amoeba tells you that the aquarium water is __________ compared
to the fluid inside the cell. correct answers >> hypertonic
