Unit 1- Biol 230 Athabasca EXAM QUESTIONS WITH ANSWERS

Unit 1- Biol 230 Athabasca EXAM
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QUESTIONS WITH ANSWERS |\ |\




Integration: - CORRECT ANSWERS ✔✔The process in |\ |\ |\ |\ |\ |\ |\



which the bodies systems work together to accomplish a
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unified/common task |\




emergent properties - CORRECT ANSWERS ✔✔In a
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complex hierarchy such as the body's organizational plan,
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as
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each level gives rise to the next highest level, new
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properties emerge |\




that are not present at the levels below
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Metabolism: - CORRECT ANSWERS ✔✔The sum of all the |\ |\ |\ |\ |\ |\ |\ |\ |\



chemical reactions that occur in the body (catabolism
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"breakdown" eg fat breakdown by the gall bladder,
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anabolism "build up" eg amino acids |\ |\ |\ |\ |\




Responsiveness: - CORRECT ANSWERS ✔✔: Is the bodies |\ |\ |\ |\ |\ |\ |\ |\



ability to detect and respond to changes. Eg the body
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regulates body temperature, which Is why you shiver
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when you get cold (Internal). External factor would be
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protecting your face when you see a ball coming at you
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(external)

,Movement: - CORRECT ANSWERS ✔✔Includes motion of |\ |\ |\ |\ |\ |\ |\



the whole body, organs, single cells, and tiny structures
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inside of cell |\ |\




Growth: - CORRECT ANSWERS ✔✔Is an increase in body
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size that results from an increase in the size of existing
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cells, an increase in the number of cells or both.
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Differentiation: - CORRECT ANSWERS ✔✔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
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(red blood cells) and several types of leukocytes all arise
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from the same unspecialized precursor cells in bone
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marrow.


Stem cells : - CORRECT ANSWERS ✔✔Precursor cells that
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can divide and give rise to cells that undergo
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differentiation.


Reproduction: - CORRECT ANSWERS ✔✔Refers to the |\ |\ |\ |\ |\ |\ |\



formation of new cells for tissue growth, repair, or
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replacement. Or the production of a new individual |\ |\ |\ |\ |\ |\ |\

,Homeostasis - CORRECT ANSWERS ✔✔The maintenance |\ |\ |\ |\ |\ |\



of relatively stable conditions in the body's internal
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environment


Intracellular fluid: - CORRECT ANSWERS ✔✔The fluid |\ |\ |\ |\ |\ |\ |\



within cells compromises 2/3 of total body fluid
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Extracellular fluid: - CORRECT ANSWERS ✔✔The fluid that |\ |\ |\ |\ |\ |\ |\ |\



is outside of the cells which compromises the other 1/3 of
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the body and is composed 80% intercellular fluid
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(inbetween cells) and 20 % plasma |\ |\ |\ |\ |\




Interstitial fluid: - CORRECT ANSWERS ✔✔The fluid the
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fills the narrow spaces between the cells
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Plasma: - CORRECT ANSWERS ✔✔The fluid portion of
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blood


Homeostasis: - CORRECT ANSWERS ✔✔The maintenance |\ |\ |\ |\ |\ |\



of relatively stable conditions in the body's internal
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environment


Steady state: - CORRECT ANSWERS ✔✔energy is needed
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to keep the regulated parameter at a relatively constant
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level

, Equilibrium: - CORRECT ANSWERS ✔✔conditions remain |\ |\ |\ |\ |\ |\



constant without the expenditure of energy
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Feedback system - CORRECT ANSWERS ✔✔: is a cycle of
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events in which a parameter of the internal environment
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is monitored, evaluated,changed, remonitored,
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reevaluated, and so on. |\ |\ |\




Stimulus: - CORRECT ANSWERS ✔✔Any disruption that
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changes a controlled variable is called a stimulus.
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Receptor: - CORRECT ANSWERS ✔✔: a body structure that
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monitors changes in a controlled variable and sends
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input to a control center.
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Negative feed back system: - CORRECT ANSWERS
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✔✔Reverses a change in a controlled variable |\ |\ |\ |\ |\ |\




Baroreceptors: - CORRECT ANSWERS ✔✔the receptors), |\ |\ |\ |\ |\ |\



pressure sensitive neurons located in the walls of certain
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blood vessels, detect the higher pressure. These neurons
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send action potentials (input) to the brain (control center)
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