Which of these is considered a potentially dangerous heavy metal contaminant in soil?
A. cadmium
B. iron
C. copper
D. molybdenum
E. zinc
A. cadmium
Cadmium is a metal that is toxic to animals in small quantities. Phytoremediation is a process used to help remove contaminants like cadmium from the soil.
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The central dogma describes the flow of information of gene expression as ____
a. DNA ® RNA ® protein b. RNA ® DNA c. RNA ® DNA ® protein d. protein ® DNA ® RNA e. DNA ® protein ® RNA
The human immunodeficiency virus (HIV) is an example of a retrovirus. In order to prevent incorporation of the viral DNA into the host genome, antiretroviral drugs could
A) inhibit the viral reverse transcriptase. B) inhibit retro-RNA polymerase. C) inhibit polyadenine removal. D) inhibit the viral reverse transcriptase and polyadenine removal. E) None of these are good antiretroviral strategies.
By the end of the eighth week of development, all organ systems are developed in the embryo.
Answer the following statement true (T) or false (F)
Patients who have type 2 diabetes no longer express genes when exposed to insulin. How might this phenomenon be explained?
A. Insulin can no longer bind to the insulin receptor because the receptor is mutated. B. The nucleus of their cells are altered so that insulin can not bind. C. Transcription factors normally activated by insulin remain off. D. The signal transduction pathways in the cells no longer exist. E. The insulin signal transduction pathway becomes permanently activated.