Which one of the following stages in the catabolism of glucose involves the splitting of glucose into two three-carbon molecules?
A) conversion of pyruvate to acetyl CoA
B) movement of NADH to the electron transport system
C) glycolysis
D) movement of electrons through the electron transport system
E) the citric acid cycle
C
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The mechanism of DNA synthesis differs between the two new daughter strands during replication. This is due to the fact that
A. the DNA strands run antiparallel to each other and the DNA polymerase can only add nucleotides to the 3' end of the growing strand. B. both daughter strands can't extend toward the replication fork because there would not be room for two DNA polymerase enzymes. C. one RNA primer attaches to the 5' end of the parent strand and the other primer to the 3' end. D. both RNA primers attach to the 3' end of the template strands, which are at opposite ends from each other.
Knowing the ion concentrations on both sides of the plasma membrane makes it possible to calculate the membrane potential (Vm), because at equilibrium
A) the Faraday constant is 0. B) ?G is 1. C) ?G is 0. D) the Vm is always -60 mV. E) It is not possible to calculate Vm without also knowing the uncharged solute distribution across the membrane.
Evolutionary fitness is measured by
a. physical strength b. reproductive success c. length of life d. resistance to disease e. competitiveness
Which statement is true?
(a) Roots gain length primarily through cell division (b) Roots gain length primarily through elongation growth