WGU C190- intro to biology, Unit 3 questions with
verified answers
A virus that recognized only adhesion proteins would infect which type of human
cell?
a) blood cell
b) skin cell
c) nerve cell Ans✓✓✓-B) skin cell
active transport Ans✓✓✓-Energy-requiring process that moves material across a
cell membrane against a concentration difference.
Antibiotics are medications that are used to fight bacterial infections in humans
and other eukaryotes. Consider the following statements; which one is probably
true about antibiotics?
A) Antibiotics are only poisonous to prokaryotic cells.
B) Antibiotics are only poisonous to eukaryotic cells.
C) Antibiotics are poisonous to all cells. This is why you shouldn't take antibiotics
very often. Ans✓✓✓-A) Antibiotics are only poisonous to prokaryotic cells.
As you know, water is a small, polar molecule. Glucose, on the other hand, is a
large, polar molecule. Which statement do you think is true about water and
glucose?
a)Water can easily pass through the cell membrane, but glucose cannot.
b)Both molecules can pass through the cell membrane because they are polar.
c)Glucose can easily pass through the cell membrane, but water cannot.
, d)Neither molecule can pass through the cell membrane because both are polar.
Ans✓✓✓-a)Water can easily pass through the cell membrane, but glucose
cannot.
Cell Membrane Ans✓✓✓-provides a barrier between the interior and exterior of
the cell and it regulates the flow of substances in and out of the cell.
Cells can maintain different oxygen concentrations in different organelles by using
phospholipid bilayers.
True or False Ans✓✓✓-False
Chloroplasts Ans✓✓✓-Capture energy from sunlight and use it to produce food
for the cell. only found in plant cells.
Cytoplasm Ans✓✓✓-A jellylike fluid inside the cell in which the organelles are
suspended.
Cytoplasm Ans✓✓✓-the space in which the chemical reactions that enable life
take place. it is the fluid that occupies the space inside the cell.
endocytosis Ans✓✓✓-material is engulfed within an infolding of the membrane
and then brought into the cell within a cytoplasmic vesicle.
Endoplasmic Reticulum (ER) Ans✓✓✓-An extensive membranous network in
eukaryotic cells, continuous with the outer nuclear membrane and composed of
ribosome-studded (rough) and ribosome-free (smooth) regions.
verified answers
A virus that recognized only adhesion proteins would infect which type of human
cell?
a) blood cell
b) skin cell
c) nerve cell Ans✓✓✓-B) skin cell
active transport Ans✓✓✓-Energy-requiring process that moves material across a
cell membrane against a concentration difference.
Antibiotics are medications that are used to fight bacterial infections in humans
and other eukaryotes. Consider the following statements; which one is probably
true about antibiotics?
A) Antibiotics are only poisonous to prokaryotic cells.
B) Antibiotics are only poisonous to eukaryotic cells.
C) Antibiotics are poisonous to all cells. This is why you shouldn't take antibiotics
very often. Ans✓✓✓-A) Antibiotics are only poisonous to prokaryotic cells.
As you know, water is a small, polar molecule. Glucose, on the other hand, is a
large, polar molecule. Which statement do you think is true about water and
glucose?
a)Water can easily pass through the cell membrane, but glucose cannot.
b)Both molecules can pass through the cell membrane because they are polar.
c)Glucose can easily pass through the cell membrane, but water cannot.
, d)Neither molecule can pass through the cell membrane because both are polar.
Ans✓✓✓-a)Water can easily pass through the cell membrane, but glucose
cannot.
Cell Membrane Ans✓✓✓-provides a barrier between the interior and exterior of
the cell and it regulates the flow of substances in and out of the cell.
Cells can maintain different oxygen concentrations in different organelles by using
phospholipid bilayers.
True or False Ans✓✓✓-False
Chloroplasts Ans✓✓✓-Capture energy from sunlight and use it to produce food
for the cell. only found in plant cells.
Cytoplasm Ans✓✓✓-A jellylike fluid inside the cell in which the organelles are
suspended.
Cytoplasm Ans✓✓✓-the space in which the chemical reactions that enable life
take place. it is the fluid that occupies the space inside the cell.
endocytosis Ans✓✓✓-material is engulfed within an infolding of the membrane
and then brought into the cell within a cytoplasmic vesicle.
Endoplasmic Reticulum (ER) Ans✓✓✓-An extensive membranous network in
eukaryotic cells, continuous with the outer nuclear membrane and composed of
ribosome-studded (rough) and ribosome-free (smooth) regions.
