The lumbar and cervical curves of the vertebral column are called
A) secondary curves.
B) primary curves.
C) quaternary curves.
D) tertiary curves.
E) None of the answers are correct.
A) secondary curves.
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Which of the following is true of introns?
A. RNA II polymerase transcribes the intronsequences along with exon sequences. B. More DNA of the human genome is devoted to exons than to introns. C. Introns are not found in bacteria or archaea, only eukaryotes. D. When annealing mature mRNA to corresponding chromosomal DNA sequences, the mRNA will form loops with intron sequences looped out.
The taxonomic category that includes species of apes, humans, and their ancestors is the ___________
A. hominids D. hominanies B. hominins E. homanities C. hominoids
Which one of the following ions outside the neuron would make it very difficult for a depolarization to occur?
A) potassium B) sodium C) chloride D) manganese
Osteoporosis may result if the activity of osteoclasts outstrips the activity of osteoblasts
Indicate whether the statement is true or false