Which of the following is not a structural motif associated with transcriptional regulation?
A) CpG motif
B) helix-turn-helix
C) zinc finger
D) leucine zipper
E) helix-loop-helix
Answer: A
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Which of the following cells is a granulocyte?
A) eosinophil B) lymphocyte C) macrophage D) monocyte
You have conducted an Ames test on a given compound. Which of the following would be classified as a positive result on the Ames test?
A) his – strain grows on an his – plate. B) his – strain grows on an his+ plate. C) his+ strain grows on an his – plate. D) his+ strain grows on an his+ plate. E) his+ strain grows on either an his – or an his+ plate.
Which of the following domains are the MOST closely related, in that they share a unique common ancestor?
a. Archaea and Bacteria b. Bacteria and Eukarya c. Archaea and Eukarya
Leah is looking at her culture of Micrococcus luteus under the microscope and is dismayed to see the cells have stained pink when she expected them to be purple. What could have gone wrong? Select all that apply.
> Decolorizer left on too long > Decolorizer not left on long enough > Crystal violet left on too long > Crystal violet not left on long enough > Iodine left on too long > Iodine not left on long enough