An animal that effects changes to make itself look larger is exhibiting
A) a desire to fight.
B) an aggressive display.
C) a submissive posture.
D) a readiness to mate.
E) dominance in a social group.
B
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Which of the following viruses can cause cancer?
A. Rous sarcoma virus B. hepatitis B C. papillomavirus D. Epstein-Barr virus E. All of the choices are correct.
In addition to the senses of vision, taste, smell, hearing, and touch, we also have a sense called proprioception. It tells us the position of our bodies, based in part on stretch receptors in muscles. Proprioceptors are part of the ______________ nervous system.
A. peripheral B. central C. neuroglial D. motor
One way in which small viruses package more information into a very small genome is to use overlapping genes so that the same base sequence is read in more than one reading frame.
Answer the following statement true (T) or false (F)
Which of the following describes the Lac operon in E. coli when lactose, but not glucose, is present in the culture medium?
A. CAP and the Lac repressor are both bound to the Lac operon's regulatory DNA, and the Lac operon is not expressed. B. Neither CAP nor the Lac repressor is bound to the Lac operon's regulatory DNA, and the Lac operon is expressed. C. Neither CAP nor the Lac repressor is bound to the Lac operon's regulatory DNA, and the Lac operon is not expressed. D. CAP, but not the Lac repressor, is bound to the Lac operon's regulatory DNA, and the Lac operon is expressed. E. The Lac repressor, but not CAP, is bound to the Lac operon's regulatory DNA, and the Lac operon is not expressed.