Began in 2009, the first human trials using embryonic stem cells were used:
A) in patients with Crohn's disease
B) in patients with debilitating spinal cord injuries
C) to treat teratomas
D) to regenerate cardiac muscle cells in patients who had suffered heart attacks
E) to treat leukemias and lymphomas
Answer: B) in patients with debilitating spinal cord injuries
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What type of cladogenesis occurs when a new species arises in the same habitat as the species from which it was derived?
A. Parapatric speciation B. Allopatric speciation C. Sympatric speciation
The release of factors by cells that influence the activity of nearby cells is referred to as
A. autocrine signaling. B. paracrine signaling. C. pheromonal signaling. D. electrical signaling. E. exocrine signaling.
Which of the following two enzymes are needed to construct a cDNA library?
A. Reverse transcriptase and Taq polymerase B. DNA ligase and Taq polymerase C. Reverse transcriptase and DNA ligase D. Taq polymerase and RNA polymerase
The development of hypertension in humans is associated with obesity, smoking, age, and kidney disease.
Answer the following statement true (T) or false (F)