C190 WGU-Introduction to Biology:Unit 3: The Cell
questions with verified answers
A five-year-old child is not growing at a normal rate. The child is also developing
hearing and vision loss as well as stiff joints.
You order a number of diagnostic tests. These indicate the following:
- Urine tests reveal the presence of excessive stores of glycosaminoglycans (a
carbohydrate) in various tissues throughout the body. The excess stores of this
carbohydrate are pushing against and damaging nearby cells.
- Enzyme tests reveal that the patient is missing a particular cellular digestive
enzyme.
- Genetic tests confirm that the patient has a mutated version of this enzyme
gene. Therefore, the patient is unable to produce this enzyme.
What is the link between cellular digestion and excess stores of carbohydrates?
A.) Cellular digestion produces these carbohydrates. If digestion occurs too
rapidly, these carbohydrates will build up.
B.) Cellular digestion breaks down these carbohydrates. If digestion doesn
Ans✓✓✓-B
A framework of filaments that act as structural support and provide a way to
move things around the cytoplasm.
A.) Ribosomes
B.) Nucleus
C.) Cytoskeleton
,D.) Organelles Ans✓✓✓-C
A porous structure that protects, supports, and gives shape to the cell.
A.) Golgi apparatus
B.) Flagellum
C.) Chloroplast
D.) Cell Wall Ans✓✓✓-D
A researcher contacts you because she is interested in finding patients for a
recently funded study. The researcher is looking for patients with polycystic
kidney disease. This is a genetic disorder that produces cysts in the kidneys, which
inhibits kidney function. Current evidence indicates that this disease may be
linked to cilia malformation in the kidneys.
What are cilia?
A.) Membrane folds inside the mitochondria that assist with aerobic respiration
B.) Enzymes in the nucleolus that are responsible for the production of ribosomes
C.) Appendages that project outward from the cell and helps the cell move or
helps materials move across the cell surface
D.) Proteins laid out like railroad tracks throughout the cell that move vesicles to
their proper location Ans✓✓✓-C
A specialized compartment found in eukaryotic cells for holding DNA.
, A.) Ribosomes
B.) Nucleus
C.) Cytoskeleton
D.) Organelles Ans✓✓✓-B
An antibiotic might target the nucleus.
A.) Unlikely
B.) Likely Ans✓✓✓-A
Antibiotic resistance can arise if bacteria have mutations in their DNA that allows
them to produce proteins which interfere with the antibiotics.
Where do these mutations happen (that is, where is the DNA)?
A.) In the cell wall
B.) In the cytoplasm
C.) In the nucleus Ans✓✓✓-B
Antibiotic use can lead to yeast infections. This happens because the antibiotics
kill both mutualistic bacteria as well as the bacteria causing the infections. The
yeast cells, however, are not killed. Without the bacteria keeping the yeast in
check, the yeast cells grow too much and cause a "yeast infection."
Based on the information above, what might you conclude about yeast?
A.) They are prokaryotic.
B.) They are eukaryotic. Ans✓✓✓-B
questions with verified answers
A five-year-old child is not growing at a normal rate. The child is also developing
hearing and vision loss as well as stiff joints.
You order a number of diagnostic tests. These indicate the following:
- Urine tests reveal the presence of excessive stores of glycosaminoglycans (a
carbohydrate) in various tissues throughout the body. The excess stores of this
carbohydrate are pushing against and damaging nearby cells.
- Enzyme tests reveal that the patient is missing a particular cellular digestive
enzyme.
- Genetic tests confirm that the patient has a mutated version of this enzyme
gene. Therefore, the patient is unable to produce this enzyme.
What is the link between cellular digestion and excess stores of carbohydrates?
A.) Cellular digestion produces these carbohydrates. If digestion occurs too
rapidly, these carbohydrates will build up.
B.) Cellular digestion breaks down these carbohydrates. If digestion doesn
Ans✓✓✓-B
A framework of filaments that act as structural support and provide a way to
move things around the cytoplasm.
A.) Ribosomes
B.) Nucleus
C.) Cytoskeleton
,D.) Organelles Ans✓✓✓-C
A porous structure that protects, supports, and gives shape to the cell.
A.) Golgi apparatus
B.) Flagellum
C.) Chloroplast
D.) Cell Wall Ans✓✓✓-D
A researcher contacts you because she is interested in finding patients for a
recently funded study. The researcher is looking for patients with polycystic
kidney disease. This is a genetic disorder that produces cysts in the kidneys, which
inhibits kidney function. Current evidence indicates that this disease may be
linked to cilia malformation in the kidneys.
What are cilia?
A.) Membrane folds inside the mitochondria that assist with aerobic respiration
B.) Enzymes in the nucleolus that are responsible for the production of ribosomes
C.) Appendages that project outward from the cell and helps the cell move or
helps materials move across the cell surface
D.) Proteins laid out like railroad tracks throughout the cell that move vesicles to
their proper location Ans✓✓✓-C
A specialized compartment found in eukaryotic cells for holding DNA.
, A.) Ribosomes
B.) Nucleus
C.) Cytoskeleton
D.) Organelles Ans✓✓✓-B
An antibiotic might target the nucleus.
A.) Unlikely
B.) Likely Ans✓✓✓-A
Antibiotic resistance can arise if bacteria have mutations in their DNA that allows
them to produce proteins which interfere with the antibiotics.
Where do these mutations happen (that is, where is the DNA)?
A.) In the cell wall
B.) In the cytoplasm
C.) In the nucleus Ans✓✓✓-B
Antibiotic use can lead to yeast infections. This happens because the antibiotics
kill both mutualistic bacteria as well as the bacteria causing the infections. The
yeast cells, however, are not killed. Without the bacteria keeping the yeast in
check, the yeast cells grow too much and cause a "yeast infection."
Based on the information above, what might you conclude about yeast?
A.) They are prokaryotic.
B.) They are eukaryotic. Ans✓✓✓-B
