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Unit 1- Biol 230 Athabasca Questions with Detailed Verified
Answers
Integration:
Ans: The process in which the bodies systems work together to accomplish a
unified/common task
emergent properties
Ans: 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
Metabolism:
Ans: 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
Responsiveness:
Ans: : 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)
Movement:
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Ans: Includes motion of the whole body, organs, single cells, and tiny structures inside
of cell
Growth:
Ans: 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.
Differentiation:
Ans: 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 differs 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.
Stem cells :
Ans: Precursor cells that can divide and give rise to cells that undergo differentiation.
Reproduction:
Ans: Refers to the formation of new cells for tissue growth, repair, or replacement. Or
the production of a new individual
Homeostasis
Ans: The maintenance of relatively stable conditions in the body's internal
environment
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Intracellular fluid:
Ans: The fluid within cells compromises 2/3 of total body fluid
Extracellular fluid:
Ans: 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
Interstitial fluid:
Ans: The fluid the fills the narrow spaces between the cells
Plasma:
Ans: The fluid portion of blood
Homeostasis:
Ans: The maintenance of relatively stable conditions in the body's internal
environment
Steady state:
Ans: energy is needed to keep the regulated parameter at a relatively constant level
Equilibrium:
Ans: conditions remain constant without the expenditure of energy
Feedback system
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Ans: : is a cycle of events in which a parameter of the internal environment is
monitored, evaluated,changed, remonitored, reevaluated, and so on.
Stimulus:
Ans: Any disruption that changes a controlled variable is called a stimulus.
Receptor:
Ans: : a body structure that monitors changes in a controlled variable and sends input
to a control center.
Negative feed back system:
Ans: Reverses a change in a controlled variable
Baroreceptors:
Ans: 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)
Positive Feedback system:
Ans: 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 affects the controlled variable.
Control Center
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Unit 1- Biol 230 Athabasca Questions with Detailed Verified
Answers
Integration:
Ans: The process in which the bodies systems work together to accomplish a
unified/common task
emergent properties
Ans: 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
Metabolism:
Ans: 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
Responsiveness:
Ans: : 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)
Movement:
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Ans: Includes motion of the whole body, organs, single cells, and tiny structures inside
of cell
Growth:
Ans: 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.
Differentiation:
Ans: 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 differs 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.
Stem cells :
Ans: Precursor cells that can divide and give rise to cells that undergo differentiation.
Reproduction:
Ans: Refers to the formation of new cells for tissue growth, repair, or replacement. Or
the production of a new individual
Homeostasis
Ans: The maintenance of relatively stable conditions in the body's internal
environment
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,Click here for more: Scholars nexus
Intracellular fluid:
Ans: The fluid within cells compromises 2/3 of total body fluid
Extracellular fluid:
Ans: 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
Interstitial fluid:
Ans: The fluid the fills the narrow spaces between the cells
Plasma:
Ans: The fluid portion of blood
Homeostasis:
Ans: The maintenance of relatively stable conditions in the body's internal
environment
Steady state:
Ans: energy is needed to keep the regulated parameter at a relatively constant level
Equilibrium:
Ans: conditions remain constant without the expenditure of energy
Feedback system
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Ans: : is a cycle of events in which a parameter of the internal environment is
monitored, evaluated,changed, remonitored, reevaluated, and so on.
Stimulus:
Ans: Any disruption that changes a controlled variable is called a stimulus.
Receptor:
Ans: : a body structure that monitors changes in a controlled variable and sends input
to a control center.
Negative feed back system:
Ans: Reverses a change in a controlled variable
Baroreceptors:
Ans: 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)
Positive Feedback system:
Ans: 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 affects the controlled variable.
Control Center
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