Which of the following is evidence for evolution in action?
A. The different domesticated breeds of dogs customized for our needs
B. Mosquitoes becoming resistant to pesticides
C. Bacteria becoming resistant to antibiotics over time
D. All are evidence for evolution
Answer: D
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Which muscle tissue type will move and maintain balance within the body?
a. Cardiac b. Skeletal c. Skeletal and cardiac d. Smooth and cardiac e. Smooth
What is the incidence of cervical cancer among Indigenous women compared to other groups of Canadian women?
A. 1.7 to 3.5 times lower B. 5.5 to 10 times lower C. 1.7 to 3.5 times higher D. 5.5 to 10 times higher
Which of the following statements are fundamental to the clonal-selection theory of how the adaptive immune system functions? I) Each lymphocyte has a unique membrane receptor that recognizes one antigen
II) When the lymphocyte binds an antigen, it is activated and begins dividing to form many identical copies of itself. III) Cloned lymphocytes have slight differences and are selected by the spleen for removal if they do not bind an antigen. IV) Cloned cells descend from an activated lymphocyte and persist even after the pathogen is eliminated. A) only I and III B) only II and IV C) only I, II, and IV D) only II, III, and IV
In some genetically engineered tomatoes, fruit ripening was delayed by crippling the gene that produces which hormone?
A. cytokinin B. gibberellin C. abscisic acid D. ethylene E. auxin