CORRECT ANSWERS
List two organs contained in the abdominal cavity. The abdominal cavity contains the stomach, intestines, spleen and liver
True or False? a. True
a. Cellular respiration occurs in the mitochondria. (T or F) b. True
b. The purpose of cellular respiration is to produce ATP. (T c. False
or F) d. False
c. Integral proteins are only found on the inner surface of e. False
a cell membrane. (T or F)
d. Endocytosis is the process that occurs to eject
biomacromolecules from the cell. (T or F)
e. Pinocytosis uses a signaling molecule from another
cell, binding to the cell membrane to bring about
changes within the cell proteins. (T or F)
You are observing two cells under the microscope. They I believe it is the smaller cell that will breathe at a more active rate because in
are the same type of eukaryotic cell but one appears order for respiration to occur efficiently and more actively the surface area to
much larger. Based on appearance alone, which one volume ratio is very critical; also, if the larger surface area is present then the
would you expect to be carrying out respiration at a diffusion of gases occur at a higher rate; so, larger cells will have a smaller surface
more active rate, the larger or smaller cell? Explain why. to volume ratio and diffusion that will occur at a slower rate creating a less active
respiration; and, on the other hand smaller cells will have a larger surface area to
volume ratio and an improved diffusion rate, so the higher rate and more active
respiration.
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.
, Note: Essay answers must clearly be in your own words. During swallowing the epiglottis moves inferiorly to close off and prevent
aspiration by covering the trachea and creating a passage for liquid, food, or
Explain what happens to the epiglottis during swallowing. bolus into the esophagus; and, preventing these things from entering into the
Why? lungs.
Air and food pass in which one of the following areas: Oropharynx
Label the following five items from the diagram: B - Oral Cavity
Label B- ___________ D - Epiglottis
Label D- __________ E - Glottis
Label E- __________ F - Trachea
Label F- __________ G - Esophagus
Label G- __________
From widest to narrowest, the branches of the bronchial Primary bronchi, secondary bronchi, tertiary bronchi, bronchioles
tree are:
Explain why someone who has hypergastrinemia Hypergastrinemia leads to excess secretion of the gastrin hormone, which
(excessive secretion of gastrin) might develop induces excess secretion of hydrochloric acid in the stomach; and, the excess
gastric/stomach ulcers. acid then acts as a protective mucousa layer causing disruption that can lead to
those ulcers.
Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess
amounts would lead to erosion of the stomach lining.
Look carefully at the diagram below. Label the following 3. Stomach
5 organs of the digestive system. 4. Gallbladder
To receive credit for the intestines you must label the 7. Jejunum
specific region. 9. Appendix
3: ___________ 10. Rectum
4: ___________
7: ___________
9: ___________
10: ___________