Of the three diseases caused by Yersinia pestis, only (bubonic/black/pneumonic) plague is communicable between humans
What will be an ideal response?
pneumonic
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Figure 15.1 shows the three alleles for the beta-globin gene. Which of the following statements best describes the effect of having the S allele, which codes for sickle-cell anemia?
A. Having the allele is always harmful. B. Having the allele is always beneficial. C. The effect depends on whether the allele occurs in its homozygous or heterozygous form. D. The effect depends on the environment (i.e., whether malaria is present). E. The effect depends on whether the allele occurs in its homozygous or heterozygous form, and the environment (i.e., whether malaria is present).
Discuss the dangers of placing too much emphasis on the genetic basis of personality and behavior
What will be an ideal response?
What important metabolic intermediate does not cross the inner membrane of the mitochondria?
A. ATP B. Acetyl-CoA C. Pyruvate D. Oxygen
Mercury in mercurochrome inhibits growth
A. through competitive inhibition. B. through a reversible action. C. by oxidizing the sulfhydryl groups in cysteine. D. by changing the shape of proteins. E. by oxidizing the sulfhydryl groups in cysteine AND by changing the shape of proteins.