According to the evidence collected so far, the animal kingdom is _____
A) monophyletic
B) paraphyletic
C) polyphyletic
D) euphyletic
E) multiphyletic
Answer: A
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Eukaryotes originated after the rise in atmospheric oxygen
Indicate whether the statement is true or false.
The restriction enzyme EcoRI recognizes the sequence GAATTC; therefore, it will ____ whenever it encounters this
sequence.
a. paste the DNA molecule b. cut the DNA molecule
c. break the hydrogen bonds holding the two DNA strands together d. replicate the DNA e. transcribe the DNA
Analysis of a certain polymer shows that it contains phosphate groups, ribose groups, and pyrimidines
Based on this information, which of the following is the best description of this compound? a. It is most likely ribonucleic acid. b. It is DNA. c. It is an inorganic compound. d. It contains thymine. e. It is a polypeptide
In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately
transferred to: a. carbon in a series of steps. b. oxygen in a series of steps. c. NADH in a series of steps. d. the mitochondrial membranes. e. hydrogen ions.