The paramecium swims by way of using a flagella
a. true
b. false
Ans: b. false
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The process by which plant parts are shed is ________
a. photoperiodism b. senescence c. dormancy d. abscission
The equation A ? PO4 + B ? A + B ? PO4 would be catalyzed by which of the following classes of enzymes?
A) transferases B) oxidoreductases C) hydrolases D) ligases E) isomerases
Which of the following statements would be true of Figure 46-4?
a. Hemoglobin would be 50% saturated at a of 30 mm Hg at the highest pH. b. Hemoglobin would be 50% saturated at a of 25 mm Hg at the lowest pH. c. At a of 40 mm Hg, the hemoglobin for the pH 2 line would be 80% saturated. d. At a lower pH, the oxygen dissociation curve is shifted to the right. e. At a higher pH, the oxygen dissociation curve is shifted to the right.
In DNA replication, RNA primer is necessary because
A. DNA synthesis starts and stops many times before completed. B. DNA synthesis begins at multiple origins of replication. C. the two strands of a replicating helix must make a full rotation to unwind. D. DNA polymerase is unable to initiate a new polynucleotide chain.