Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
What are the characteristics of life? (MORE MARE)
|
1) organization 2) Energy requirement 3) metabolism 4) movement 5) irritibility/responsivness 6) adaptation 7) repreoduction 8) evolution
|
|
|
How is organization acheived in living things?
|
By use of energy (and heat/entropy output)
|
|
|
What is physiology?
|
The application of physics and chemsitry to living systems
|
|
|
What does life require?
|
Outside energy (the process is non-spontaneous)
|
|
|
How are respiration and photosynthesis related?
|
They are opposite reactions (6 CO2 + 6 H2O + energy <-> C6H12O6 + 6O2)
|
|
|
What is life?
|
Life is a process of work in which the relatively steady state of the living system is produced and maintained at the expense of energy obtained from the surround with consequent increase in the surround's entropy
|
|
|
How are structure and function related?
|
They are merely different aspects of the same thing.
|
|
|
What is the principle of emergent properties?
|
The whole is greater than the sum of its parts; the properties of the whole result from the organizational structure of the parts.
|
|
|
Where does life emerge?
|
At the cellular level.
|
|
|
What is the biological work forestalling entropic doom?
|
biosynthesis, active transport/secretion, movement
|
|
|
What is homeokinesis
|
relatively constant rate of energy/ATP production and utilization for biological work
|
|
|
How do regularotrs achieve homeokinesis?
|
Through homeostasis (consistency of internal milieu), which allows homeokinesis over a wider environmental range
|
|
|
What is disease?
|
The failure of a homeostatic control system
|
|
|
What is the difference b/t stenotherms and eurytherms?
|
Both are poikilotherms, but stenotherms can only live at a fairly constant temp. Eurythems tolerate more temperature variation.
|
|
|
What is an ectotherm?
|
Heat is derived mainly from the environment (majority are poikilotherms)
|
|
|
What is an endotherm?
|
Majority of heat is derived from internal metabolism
|
|
|
What is homeostasis?
|
constancy of internal state (pH, temp, etc)
|
|
|
What requirements must all metabolic systems meet?
|
1) high energy compounds (ATP) mut be produced at a sufficient rate 2) Intermediates needed for biosynthesis must be ingested or synthesized 3) reducing power (e.g. NADH) must be formed 4) biosynthesis of essential macromolecules must occur at rates at least equal to turnover rates.
|
|
|
What is the problem of the eurythermal conformer?
|
It must continue vital processes despire lack of homestasis; Genetic factors influence homeokinesis; control of metabolism is control of rates/types of enzyme function
|
|
|
What are the three time courses of adaptation?
|
1) immediate 2) seasonal 3) evolutionary. Adapation must occur within the appropriate time frame for survival
|
