Portage BIOD 151 Final Exam Questions
with Correct Answers
List two organs contained in the abdominal cavity. - Answer-The abdominal cavity
contains the stomach, intestines, spleen and liver
a. The purpose of cellular respiration is to produce ADP. (T or F) - Answer-a. False-
(ATP is produced, not ADP)
b. Peripheral proteins are found on the outer surface of a cell membrane. (T or F) -
Answer-b. True
c. Exocytosis is the process that occurs to bring biomacromolecules inside the cell. (T or
F) - Answer-c. False- (This process is called endocytosis)
d. Receptor mediated endocytosis uses a signaling molecule from another cell, binding
to the cell membrane to bring about changes within the cell proteins. (T or F) - Answer-
d. True
e. Endocytosis is a passive process. It does not require cellular energy expenditure.(T
or F) - Answer-e. False- (Endocytosis is an active process and requires cellular energy)
In your own words, discuss Tay Sachs disease. What organelle within the cell is
impacted? What are the symptoms of the disease and why do they occur? - Answer-
(1)Lysosomes (2) buildup of toxic lipids inside the cell (biomacromolecules) (3) disability
and death, In the genetic disease known as Tay Sachs, one of the normally present
digestive enzymes inside lysosomes is lacking. Thus, a toxic lipid in the brain cells
cannot be broken down. The resulting buildup of lipids in these cells can cause
intellectual disability and death.
You are observing two cells under the microscope. They are the same type of
eukaryotic cell but one appears much larger. Based on appearance alone, which one
would you expect to be carrying out respiration at a more active rate, the larger or
smaller cell? Explain why. - Answer-The smaller cell. Cells need to remain relatively
small because as a cell expands the amount of surface area relative to the volume of
the cell decreases. The smaller cell is more active because relative to its volume, its
surface area is larger than a bigger cell. With a larger surface area (relative to its
volume) this allows the metabolic processes to occur faster.
Explain what happens to the soft palate during swallowing. Why? - Answer-The upward
movement of the soft palate prevents food or liquid from entering the nasal passages
during swallowing.
with Correct Answers
List two organs contained in the abdominal cavity. - Answer-The abdominal cavity
contains the stomach, intestines, spleen and liver
a. The purpose of cellular respiration is to produce ADP. (T or F) - Answer-a. False-
(ATP is produced, not ADP)
b. Peripheral proteins are found on the outer surface of a cell membrane. (T or F) -
Answer-b. True
c. Exocytosis is the process that occurs to bring biomacromolecules inside the cell. (T or
F) - Answer-c. False- (This process is called endocytosis)
d. Receptor mediated endocytosis uses a signaling molecule from another cell, binding
to the cell membrane to bring about changes within the cell proteins. (T or F) - Answer-
d. True
e. Endocytosis is a passive process. It does not require cellular energy expenditure.(T
or F) - Answer-e. False- (Endocytosis is an active process and requires cellular energy)
In your own words, discuss Tay Sachs disease. What organelle within the cell is
impacted? What are the symptoms of the disease and why do they occur? - Answer-
(1)Lysosomes (2) buildup of toxic lipids inside the cell (biomacromolecules) (3) disability
and death, In the genetic disease known as Tay Sachs, one of the normally present
digestive enzymes inside lysosomes is lacking. Thus, a toxic lipid in the brain cells
cannot be broken down. The resulting buildup of lipids in these cells can cause
intellectual disability and death.
You are observing two cells under the microscope. They are the same type of
eukaryotic cell but one appears much larger. Based on appearance alone, which one
would you expect to be carrying out respiration at a more active rate, the larger or
smaller cell? Explain why. - Answer-The smaller cell. Cells need to remain relatively
small because as a cell expands the amount of surface area relative to the volume of
the cell decreases. The smaller cell is more active because relative to its volume, its
surface area is larger than a bigger cell. With a larger surface area (relative to its
volume) this allows the metabolic processes to occur faster.
Explain what happens to the soft palate during swallowing. Why? - Answer-The upward
movement of the soft palate prevents food or liquid from entering the nasal passages
during swallowing.
