The transitional fossil Archaeopteryx shows a combination of traits consistent with the hypothesis that it shared a common ancestor with ________
A) dinosaurs and bats
B) hippos and whales
C) reptiles and birds
D) dinosaurs and birds
D
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What respiratory structure produces sound?
a. Pharynx b. Nasal cavity c. Trachea d. Epiglottis e. Larynx
Which of the following statements is true of eukaryotic DNA?
a. A promoter is part of an intron b. An intron is part of a promoter c. Introns are sequences of DNA d. Exons are edited out of pre-mRNA
Match the function of DNA on the left with the appropriate description on the right
i. expression a. stable maintenance and passage of information ii. variation b. duplication of genetic material iii. replication c. potential for alteration iv. storage d. production of a phenotype Which of the choices below is correct? A) i = b; ii = d; iii = a; iv = c B) i = d; ii = c; iii = b; iv = a C) i = d; ii = b; iii = c; iv = a D) i = d; ii = b; iii = a; iv = c E) i = c; ii = a; iii = b; iv = d
Repeated attacks of amoebiasis may occur because:
a. diagnostic methods are very poor b. there are not effective treatments c. the body's immune system does not respond d. the protists remain in the body as cysts