Physiology Exam 1 Practice Quiz
Questions With Complete Solutions
Place the following in correct sequence from simplest to most complex:
| | | | | | | | | | |
1) molecules, 2) atoms, 3) tissues, 4) cells, 5) organs - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-2-1-4-3-5
Choose the correct feedback mechanism controlling blood clotting:
| | | | | | | |
Positive feedback |
Negative feedback - CORRECT ANSWER✔✔-Positive feedback
| | | | |
Which of these is not a function of the plasma membrane?:
| | | | | | | | | |
-It is selectively permeable.
| | |
-It encloses the cell contents.
| | | |
-It acts as a site of cell-to-cell interaction and recognition.
| | | | | | | | |
-It prevents potassium ions from leaking out and sodium ions from
| | | | | | | | | | |
crossing into the cell. - CORRECT ANSWER✔✔-It prevents potassium
| | | | | | | | |
ions from leaking out and sodium ions from crossing into the cell.
| | | | | | | | | | |
A structure that is composed of two or more tissues would be a(n)
| | | | | | | | | | | | |
________.
,-complex tissue |
-complex cell |
-organ system |
-organ - CORRECT ANSWER✔✔-Organ
| | |
The four elements that make up about 96% of body matter are
| | | | | | | | | | | |
________.
-sodium, potassium, hydrogen, oxygen
| | |
-carbon, oxygen, hydrogen, nitrogen
| | |
-carbon, oxygen, phosphorus, calcium
| | |
-nitrogen, hydrogen, calcium, sodium - CORRECT ANSWER✔✔-carbon,
| | | | | | |
oxygen, hydrogen, nitrogen
| |
Passive membrane transport processes include ________.
| | | | |
-the use of transport protein pumps when moving substances from
| | | | | | | | | |
areas of low to high concentration
| | | | |
-movement of water from an area of low concentration to an area of
| | | | | | | | | | | | |
high concentration
|
-consumption of ATP | |
-movement of a substance down its concentration gradient - CORRECT
| | | | | | | | | |
ANSWER✔✔-movement of a substance down its concentration gradient | | | | | | |
,Which of the following statements is the most correct regarding
| | | | | | | | | |
homeostatic imbalance? |
-Negative feedback mechanisms are functioning normally.
| | | | |
-The internal environment is becoming more stable.
| | | | | |
-It is considered the cause of most diseases.
| | | | | | |
-Positive feedback mechanisms are overwhelmed. - CORRECT
| | | | | | |
ANSWER✔✔-It is considered the cause of most diseases | | | | | | |
If you consider your home air conditioner in terms of homeostasis, then
| | | | | | | | | | | |
the wall thermostat would be the ________.
| | | | | |
-control center |
-effector
-variable
-receptor - CORRECT ANSWER✔✔-control center
| | | |
In a DNA molecule, the phosphate serves ________.
| | | | | | |
-as nucleotides
|
-as a code
| |
-to bind the sugars to their bases
| | | | | |
-to hold the molecular backbone together - CORRECT ANSWER✔✔-to
| | | | | | | | |
hold the molecular backbone together
| | | |
, It is important for any organism to maintain its boundaries, so that its
| | | | | | | | | | | | |
internal environment remains distinct from the external environment
| | | | | | | |
surrounding it. |
-True
-False - CORRECT ANSWER✔✔-True
| | |
Which of the following statements is true concerning feedback
| | | | | | | | |
mechanisms?
-Positive feedback mechanisms always result in excessive damage to the
| | | | | | | | |
host.
|
-Blood glucose levels are regulated by positive feedback mechanisms.
| | | | | | | |
-Negative feedback mechanisms work to prevent sudden severe
| | | | | | | |
changes within the body. | | |
-Negative feedback mechanisms tend to increase the original stimulus. -
| | | | | | | | | |
CORRECT ANSWER✔✔-Negative feedback mechanisms work to prevent
| | | | | | |
sudden severe changes within the body.
| | | | |
What is the main, general purpose of negative feedback?
| | | | | | | |
-to maintain homeostasis
| |
-to control all body system tissues
| | | | |
-to regulate excretion
| |
-to keep the body's sugar high - CORRECT ANSWER✔✔-to maintain
| | | | | | | | | |
homeostasis
Questions With Complete Solutions
Place the following in correct sequence from simplest to most complex:
| | | | | | | | | | |
1) molecules, 2) atoms, 3) tissues, 4) cells, 5) organs - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-2-1-4-3-5
Choose the correct feedback mechanism controlling blood clotting:
| | | | | | | |
Positive feedback |
Negative feedback - CORRECT ANSWER✔✔-Positive feedback
| | | | |
Which of these is not a function of the plasma membrane?:
| | | | | | | | | |
-It is selectively permeable.
| | |
-It encloses the cell contents.
| | | |
-It acts as a site of cell-to-cell interaction and recognition.
| | | | | | | | |
-It prevents potassium ions from leaking out and sodium ions from
| | | | | | | | | | |
crossing into the cell. - CORRECT ANSWER✔✔-It prevents potassium
| | | | | | | | |
ions from leaking out and sodium ions from crossing into the cell.
| | | | | | | | | | |
A structure that is composed of two or more tissues would be a(n)
| | | | | | | | | | | | |
________.
,-complex tissue |
-complex cell |
-organ system |
-organ - CORRECT ANSWER✔✔-Organ
| | |
The four elements that make up about 96% of body matter are
| | | | | | | | | | | |
________.
-sodium, potassium, hydrogen, oxygen
| | |
-carbon, oxygen, hydrogen, nitrogen
| | |
-carbon, oxygen, phosphorus, calcium
| | |
-nitrogen, hydrogen, calcium, sodium - CORRECT ANSWER✔✔-carbon,
| | | | | | |
oxygen, hydrogen, nitrogen
| |
Passive membrane transport processes include ________.
| | | | |
-the use of transport protein pumps when moving substances from
| | | | | | | | | |
areas of low to high concentration
| | | | |
-movement of water from an area of low concentration to an area of
| | | | | | | | | | | | |
high concentration
|
-consumption of ATP | |
-movement of a substance down its concentration gradient - CORRECT
| | | | | | | | | |
ANSWER✔✔-movement of a substance down its concentration gradient | | | | | | |
,Which of the following statements is the most correct regarding
| | | | | | | | | |
homeostatic imbalance? |
-Negative feedback mechanisms are functioning normally.
| | | | |
-The internal environment is becoming more stable.
| | | | | |
-It is considered the cause of most diseases.
| | | | | | |
-Positive feedback mechanisms are overwhelmed. - CORRECT
| | | | | | |
ANSWER✔✔-It is considered the cause of most diseases | | | | | | |
If you consider your home air conditioner in terms of homeostasis, then
| | | | | | | | | | | |
the wall thermostat would be the ________.
| | | | | |
-control center |
-effector
-variable
-receptor - CORRECT ANSWER✔✔-control center
| | | |
In a DNA molecule, the phosphate serves ________.
| | | | | | |
-as nucleotides
|
-as a code
| |
-to bind the sugars to their bases
| | | | | |
-to hold the molecular backbone together - CORRECT ANSWER✔✔-to
| | | | | | | | |
hold the molecular backbone together
| | | |
, It is important for any organism to maintain its boundaries, so that its
| | | | | | | | | | | | |
internal environment remains distinct from the external environment
| | | | | | | |
surrounding it. |
-True
-False - CORRECT ANSWER✔✔-True
| | |
Which of the following statements is true concerning feedback
| | | | | | | | |
mechanisms?
-Positive feedback mechanisms always result in excessive damage to the
| | | | | | | | |
host.
|
-Blood glucose levels are regulated by positive feedback mechanisms.
| | | | | | | |
-Negative feedback mechanisms work to prevent sudden severe
| | | | | | | |
changes within the body. | | |
-Negative feedback mechanisms tend to increase the original stimulus. -
| | | | | | | | | |
CORRECT ANSWER✔✔-Negative feedback mechanisms work to prevent
| | | | | | |
sudden severe changes within the body.
| | | | |
What is the main, general purpose of negative feedback?
| | | | | | | |
-to maintain homeostasis
| |
-to control all body system tissues
| | | | |
-to regulate excretion
| |
-to keep the body's sugar high - CORRECT ANSWER✔✔-to maintain
| | | | | | | | | |
homeostasis
