Biol 230 Athabasca Unit 1 Exam
Complete Questions and Guide Answers
100% Verified Graded A+
1. Integration
Answer: The process in which the bodies systems work together to accomplish a unified/common task
2. emergent properties
Answer: In a complex hierarchy such as the body's organizational plan, as each level gives
rise to the next highest level, new properties emerge
that are not present at the levels below
3. Metabolism
Answer: The sum of all the chemical reactions that occur in the body (catabolism "breakdown" eg fat
breakdown by the gall bladder, anabolism "build up" eg amino acids
4. Responsiveness:
Answer: Is the bodies ability to detect and respond to changes. Eg the body regulates body temperature, which
Is why you shiver when you get cold (Internal). External factor would be protecting your face when you see a ball coming
at you (external)
,5. Movement
Answer: Includes motion of the whole body, organs, single cells, and tiny structures inside of cell
6. Growth
Answer: Is an increase in body size that results from an increase in the size of existing cells, an increase in the
number of cells or both.
7. Differentiation
Answer: Is the development of a cell from an unspecialized to a specialized state. Each type of cell in the body
has a specialized structure and function that ditters from that of its precursor (ancestor) cells. For example,
erythrocytes (red blood cells) and several types of leukocytes all arise from the same unspecialized precursor cells in
bone marrow.
8. Stem cells
Answer: Precursor cells that can divide and give rise to cells that undergo ditterentiation.
9. Reproduction
Answer: Refers to the formation of new cells for tissue growth, repair, or replacement. Or the produc- tion of a
new individual
10. Homeostasis
Answer: The maintenance of relatively stable conditions in the body's internal environment
11. Intracellular fluid
Answer: The fluid within cells compromises 2/3 of total body fluid
,12. Extracellular fluid
Answer: The fluid that is outside of the cells which compromises the other 1/3 of the body and is composed
80% intercellular fluid (inbetween cells) and 20 % plasma
13. Interstitial fluid
Answer: The fluid the fills the narrow spaces between the cells
14. Plasma
Answer: The fluid portion of blood
15. Homeostasis
Answer: The maintenance of relatively stable conditions in the body's internal environment
16. Steady state
Answer: energy is needed to keep the regulated parameter at a relatively constant level
17. Equilibrium
Answer: conditions remain constant without the expenditure of energy
18. Feedback system:
Answer: is a cycle of events in which a parameter of the internal environment is monitored,
evaluated,changed, remonitored, reevaluated, and so on.
19. Stimulus
Answer: Any disruption that changes a controlled variable is called a stimulus.
20. Receptor
, Answer: a body structure that monitors changes in a controlled variable and sends input to a control center.
21. Negative feed back system
Answer: Reverses a change in a controlled variable
22. Baroreceptors
Answer: the receptors), pressure sensitive neurons located in the walls of certain blood vessels, detect the
higher pressure. These neurons send action potentials (input) to the brain (control center)
23. Positive Feedback system
Answer: strengthens or reinforces a change in a controlled variable. A positive feedback system operates
similarly to a negative feedback system except for theway the response attects the controlled variable.
24. Control Center
Answer: determines the narrow range or set point within which a controlled variable should be maintained,
output from the control center typically occurs as action potentials, or hormones or other chemical signals.
25. Effector
Answer: a body structure that receives output from the control center and produces a response or ettect that
changes the controlled variable. Nearly every organ or tissue in the body can behaveas an ettector
26. Feedforward control
Answer: Events occur in anticipation of a change in a controlled variable
27. Disorder
Complete Questions and Guide Answers
100% Verified Graded A+
1. Integration
Answer: The process in which the bodies systems work together to accomplish a unified/common task
2. emergent properties
Answer: In a complex hierarchy such as the body's organizational plan, as each level gives
rise to the next highest level, new properties emerge
that are not present at the levels below
3. Metabolism
Answer: The sum of all the chemical reactions that occur in the body (catabolism "breakdown" eg fat
breakdown by the gall bladder, anabolism "build up" eg amino acids
4. Responsiveness:
Answer: Is the bodies ability to detect and respond to changes. Eg the body regulates body temperature, which
Is why you shiver when you get cold (Internal). External factor would be protecting your face when you see a ball coming
at you (external)
,5. Movement
Answer: Includes motion of the whole body, organs, single cells, and tiny structures inside of cell
6. Growth
Answer: Is an increase in body size that results from an increase in the size of existing cells, an increase in the
number of cells or both.
7. Differentiation
Answer: Is the development of a cell from an unspecialized to a specialized state. Each type of cell in the body
has a specialized structure and function that ditters from that of its precursor (ancestor) cells. For example,
erythrocytes (red blood cells) and several types of leukocytes all arise from the same unspecialized precursor cells in
bone marrow.
8. Stem cells
Answer: Precursor cells that can divide and give rise to cells that undergo ditterentiation.
9. Reproduction
Answer: Refers to the formation of new cells for tissue growth, repair, or replacement. Or the produc- tion of a
new individual
10. Homeostasis
Answer: The maintenance of relatively stable conditions in the body's internal environment
11. Intracellular fluid
Answer: The fluid within cells compromises 2/3 of total body fluid
,12. Extracellular fluid
Answer: The fluid that is outside of the cells which compromises the other 1/3 of the body and is composed
80% intercellular fluid (inbetween cells) and 20 % plasma
13. Interstitial fluid
Answer: The fluid the fills the narrow spaces between the cells
14. Plasma
Answer: The fluid portion of blood
15. Homeostasis
Answer: The maintenance of relatively stable conditions in the body's internal environment
16. Steady state
Answer: energy is needed to keep the regulated parameter at a relatively constant level
17. Equilibrium
Answer: conditions remain constant without the expenditure of energy
18. Feedback system:
Answer: is a cycle of events in which a parameter of the internal environment is monitored,
evaluated,changed, remonitored, reevaluated, and so on.
19. Stimulus
Answer: Any disruption that changes a controlled variable is called a stimulus.
20. Receptor
, Answer: a body structure that monitors changes in a controlled variable and sends input to a control center.
21. Negative feed back system
Answer: Reverses a change in a controlled variable
22. Baroreceptors
Answer: the receptors), pressure sensitive neurons located in the walls of certain blood vessels, detect the
higher pressure. These neurons send action potentials (input) to the brain (control center)
23. Positive Feedback system
Answer: strengthens or reinforces a change in a controlled variable. A positive feedback system operates
similarly to a negative feedback system except for theway the response attects the controlled variable.
24. Control Center
Answer: determines the narrow range or set point within which a controlled variable should be maintained,
output from the control center typically occurs as action potentials, or hormones or other chemical signals.
25. Effector
Answer: a body structure that receives output from the control center and produces a response or ettect that
changes the controlled variable. Nearly every organ or tissue in the body can behaveas an ettector
26. Feedforward control
Answer: Events occur in anticipation of a change in a controlled variable
27. Disorder
