The difference between water purification and sewage treatment is
A. the types of microorganisms used for the treatment.
B. whether the water source is residential or commercial.
C. the amount of air pumped into the water for treatment.
D. there is microbial degradation in sewage treatment, but not in water purification.
Answer: D
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Which of the following describes the focus of Mendel’s work in genetics?
a. inherited traits that appeared to be a blending of two genes b. inherited traits with distinct, distinguishable patterns c. inherited traits that were no longer recessive d. inherited traits with only minor differences
If a couple is planning on having three children, what is the probability that only one will be male?
a. 0 b. 1/4 c. 3/8 d. 1/2 e. 3/4
All of the following processes occur in the nephron of the kidney EXCEPT __________.
a. tubular secretion b. capsular filtration c. blood cell formation d. cellular respiration e. selective reabsorption
If the difference in pH across a membrane is 0.60 and the membrane potential is -0.10 V, about what percent of the Gibbs free energy change, ?G, is from the pH difference at 37 oC? (R = 8.315 J K-1 mol-1; F = 96,485 J V-1 mol-1)
A) 15% B) 27% C) 73% D) 85%