A laboratory recipe lists sucrose, an ammonia compound, calcium salts and a buffer as the ingredients for a microbiologic medium. These are added to water and autoclaved. What type of medium does this protocol produce?
A) defined agar
B) defined broth
C) complex broth
D) reducing agar
E) complex enrichment broth
B
Bloom's Taxonomy: Analysis
Section: Growth Requirements
Learning Outcome: 6.10
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In the accompanying figure, why does the curve sharply drop after approximately 45°C instead of mirroring the slope
of the line going from 0-40°C?
a. At high temperatures, the reactions proceed so quickly that enzymes are no longer helpful or required. b. This is true of all catalysts and is not due to any special features of enzymes.
c. The kinetic energy of the reactants is so great that it destabilizes the enzyme and diminishes the enzyme's activity. d. The kinetic energy of the reactants is lower than that of the products, forcing a change in enzyme activity. e. The enzyme begins to denature above a certain temperature, eliminating all catalytic activity of the protein.
In the garden peas example above, a tall plant with white flowers crossed with a dwarf plant with
purple flowers produces all tall offspring with purple flowers. What is the genotype of the parents? What will be an ideal response?
The glycolysis pathway is basically .
a. catabolic b. amphibolic c. anabolic d. cyclical
Identify the correct flow of blood through a one-circuit system.
A. ventricle - gill capillaries - systemic capillaries - sinus venosus - atrium B. ventricle - systemic capillaries - gill capillaries - sinus venosus - atrium C. ventricle - pulmonary capillaries - atrium - aorta - systemic capillaries D. ventricle - gill capillaries - systemic capillaries - atrium - sinus venosus