Lecture 19

Digestive and Urinary Systems and Metabolism

14 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Essentially, the first law of thermodynamics says that
Energy can be neither created nor destroyed
The second law of thermodynamics states that
Energy tends to become increasingly more disorganized
A molecule that gives up an electron becomes
Both ionized and oxidized
In simple diffusion
A. the rate of movement of molecules is controlled by temperature and pressure.
b. the movement of individual molecules is random.
c. the movement of molecules of one substance is independent of the movement of any other substance.
d. the net movement is away from the region of highest concentration.
e. all of these
The formation of large molecules from small repeating units is known as what kind of reaction?
Condensation
Hydrolysis is a (an) _____ reaction.
Cleavage
Although it its too simple an explanation, the concept of a key fitting into a lock is descriptive of the
Matching of enzyme with substrate
During enzyme-catalyzed reactions, substrate is a synonym for
Reactants
Enzymes
A. are very specific.
b. act as catalysts.
c. are organic molecules.
d. have special shapes that control their activities.
e. all of these
Enzymes increase the rate of a given reaction by lowering what kind of energy?
Activation
Allosteric inhibition is generally a result of
Binding regulatory molecules to another site
The basic functional unit of the mammalian kidney filters the blood and actively secretes and resorbs specific solute molecules. What is the name of this unit?
Nephron
In the nephron, the glomerulus filters blood, after which the filtrate - water and solutes - enters Bowman/s capsule. From Bowman's capsule, the filtrate passes through several regions of a long tubule. Out of which region are most of the solutes and water removed from the tubule?
Proximal convoluted tubule
Does the loop of henle concentrate urine?
No