During which stage of wastewater treatment are methanogenic microbes most important?
A) Primary treatment
B) Secondary treatment
C) Disinfection
D) Sludge digestion
E) Biological oxidation
D
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Which statement does NOT support the cohesion-tension theory of water transport?
A. Water molecules are strongly cohesive B. The interior surface of a xylem cell is strongly hydrophobic C. Water evaporates from the walls of the mesophyll D. Water molecules are adhesive E. Transpiration allows the escape of water vapor from a plant through stomata in the leaf surface
A molecule moves down its concentration gradient using a transport protein in the plasma membrane. This is an example of
a. active transport b. facilitated diffusion c. diffusion d. exocytosis e. endocytosis
In Escherichia coli, the cytoplasmic heat shock response is facilitated by ?32 (RpoH), which at high temperatures
a. binds to DnaK and degrades proteases. b. binds to unfolded proteins, acting as a chaperone. c. evades protease degradation and functions to induce heat shock gene expression. d. remains unbound and acts as a negative regulator to synthesize DnaK.
Substrate phosphorylation occurs when protons pass through ATP synthase and combine with oxygen to make water.
Answer the following statement true (T) or false (F)