EXSC 223 Final (Dr. Thompson, USC)
Exam with Actual Answers 2025-2026
Updated.
Positive feedback mechanisms tend to increase the original stimulus. - Answer true
Imaging is useful in discovering obstructed blood supplies in organs and tissues. - Answer
true
The anatomical position means the body is standing at attention with the palms facing forward
and the thumbs pointing away from the body. - Answer true
The elbow is proximal to the shoulder. - Answer false
The serous membrane that lines the peritoneal cavity wall is called visceral peritoneum. -
Answer false
A major function of serous membranes is to decrease friction. - Answer true
The right hypochondriac region contains the majority of the stomach. - Answer false
Lungs carry out an excretory function. - Answer true
Embryology concerns the structural changes that occur in an individual from conception
through old age. - Answer false
A tissue consists of groups of similar cells that have a common function. - Answer true
It is important for any organism to maintain its boundaries, so that its internal environment
remains distinct from the external environment surrounding it. - Answer true
Without some sort of negative feedback mechanism, it would be impossible to keep our boy
chemistry in balance. - Answer true
Regardless of the variable being regulated, all homeostatic control mechanisms have at least
three independent components. - Answer true
,The epigastric region is located superior to the umbilical region. - Answer true
The atomic weight is only an average of relative weights of an atom and its isotopes, and it may
vary from the weight of a specific isotope. - Answer true
Emulsions and colloids are the same thing. - Answer true
Chemical properties are determined primarily by neutrons. - Answer false
A charged particle is generally called an ion. - Answer true
Isotopes differ from each other only in the number of electrons contained. - Answer false
About 60% to 80% of the volume of most living cells consists of organic compounds. - Answer
false
Lipids are a poor source of stored energy. - Answer false
Current information theorizes that omega-3 fatty acids decrease the risk of heart disease. -
Answer true
Glucose is an example of a monosaccharide. - Answer true
A molecule consisting of one carbon atom and two oxygen atoms is correctly written as CO2. -
Answer true
The lower the pH, the higher the hydrogen ion concentration. - Answer true
Covalent bonds are generally less stable than ionic bonds. - Answer false
Hydrogen bonds are comparatively strong bonds. - Answer false
The fact that no chemical bonding occurs between the components of a mixture is the chief
difference between mixtures and compounds. - Answer true
Alpha particles, although relatively weak energy particles, are second only to smoking as a cause
of lung cancer. - Answer true
, No chemical bonding occurs between the components of a mixture. - Answer true
All organic compounds contain carbon. - Answer true
A dipeptide can be broken into two amino acids by dehydration synthesis. - Answer false
The pH of body fluids must remain fairly constant for the body to maintain homeostasis. -
Answer true
Mixtures are combinations of elements or compounds that are physically blended together but
are not bound by chemical bonds. - Answer true
Buffers resist abrupt and large changes in the pH of the body by releasing or binding ions. -
Answer true
Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the
parent cell. - Answer true
Apoptosis is programmed cell suicide, but cancer cells fail to undergo apoptosis. - Answer
true
DNA contains "dark matter" that codes for specific structural proteins. - Answer false
Final preparation for cell division is made during the cell life cycle subphase called G2. - Answer
true
Chromatin consists of DNA and RNA. - Answer false
In osmosis, movement of water occurs toward the solution with the lower solute concentration.
- Answer false
The genetic information is coded in DNA by the regular alternation of sugar and phosphate
molecules. - Answer false
A process by which large particles may be taken into the cell for food, protection of the body, or
for disposing of old or dead cells is called phagocytosis. - Answer true
Exam with Actual Answers 2025-2026
Updated.
Positive feedback mechanisms tend to increase the original stimulus. - Answer true
Imaging is useful in discovering obstructed blood supplies in organs and tissues. - Answer
true
The anatomical position means the body is standing at attention with the palms facing forward
and the thumbs pointing away from the body. - Answer true
The elbow is proximal to the shoulder. - Answer false
The serous membrane that lines the peritoneal cavity wall is called visceral peritoneum. -
Answer false
A major function of serous membranes is to decrease friction. - Answer true
The right hypochondriac region contains the majority of the stomach. - Answer false
Lungs carry out an excretory function. - Answer true
Embryology concerns the structural changes that occur in an individual from conception
through old age. - Answer false
A tissue consists of groups of similar cells that have a common function. - Answer true
It is important for any organism to maintain its boundaries, so that its internal environment
remains distinct from the external environment surrounding it. - Answer true
Without some sort of negative feedback mechanism, it would be impossible to keep our boy
chemistry in balance. - Answer true
Regardless of the variable being regulated, all homeostatic control mechanisms have at least
three independent components. - Answer true
,The epigastric region is located superior to the umbilical region. - Answer true
The atomic weight is only an average of relative weights of an atom and its isotopes, and it may
vary from the weight of a specific isotope. - Answer true
Emulsions and colloids are the same thing. - Answer true
Chemical properties are determined primarily by neutrons. - Answer false
A charged particle is generally called an ion. - Answer true
Isotopes differ from each other only in the number of electrons contained. - Answer false
About 60% to 80% of the volume of most living cells consists of organic compounds. - Answer
false
Lipids are a poor source of stored energy. - Answer false
Current information theorizes that omega-3 fatty acids decrease the risk of heart disease. -
Answer true
Glucose is an example of a monosaccharide. - Answer true
A molecule consisting of one carbon atom and two oxygen atoms is correctly written as CO2. -
Answer true
The lower the pH, the higher the hydrogen ion concentration. - Answer true
Covalent bonds are generally less stable than ionic bonds. - Answer false
Hydrogen bonds are comparatively strong bonds. - Answer false
The fact that no chemical bonding occurs between the components of a mixture is the chief
difference between mixtures and compounds. - Answer true
Alpha particles, although relatively weak energy particles, are second only to smoking as a cause
of lung cancer. - Answer true
, No chemical bonding occurs between the components of a mixture. - Answer true
All organic compounds contain carbon. - Answer true
A dipeptide can be broken into two amino acids by dehydration synthesis. - Answer false
The pH of body fluids must remain fairly constant for the body to maintain homeostasis. -
Answer true
Mixtures are combinations of elements or compounds that are physically blended together but
are not bound by chemical bonds. - Answer true
Buffers resist abrupt and large changes in the pH of the body by releasing or binding ions. -
Answer true
Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the
parent cell. - Answer true
Apoptosis is programmed cell suicide, but cancer cells fail to undergo apoptosis. - Answer
true
DNA contains "dark matter" that codes for specific structural proteins. - Answer false
Final preparation for cell division is made during the cell life cycle subphase called G2. - Answer
true
Chromatin consists of DNA and RNA. - Answer false
In osmosis, movement of water occurs toward the solution with the lower solute concentration.
- Answer false
The genetic information is coded in DNA by the regular alternation of sugar and phosphate
molecules. - Answer false
A process by which large particles may be taken into the cell for food, protection of the body, or
for disposing of old or dead cells is called phagocytosis. - Answer true
