If the genus Quercus (oaks) is monophyletic, then this means that all species of oaks
A. grow in similar habitats.
B. are morphologically very similar.
C. are descended from a common ancestor.
D. have undergone horizontal gene transfer sometime in their evolutionary history.
E. cannot be classified in a single family or order.
Answer: C
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Which of the following proteins allow a plant to mount an immune response against a specific pathogen? Select all correct choices
A. flagellin receptors on the plasma membrane B. avirulence (AVR) proteins formed by pathogens C. resistance (R) proteins in the plant cytoplasm D. chitin receptors on the plasma membrane
Answer the following statements true (T) or false (F)
1. Rods and cones, like most sensory receptors, depolarize open receiving a stimulus. 2. Perception of salty tastes occurs at the level of the taste bud. 3. Death of hair cells resulting from repeated exposure to loud noises is thought to be caused by metabolic "exhaustion" of these cells from continuous activation. 4. The most common defect in color vision, termed red-green color blindness, results from a faulty opsin gene. 5. Compound eyes in invertebrate animals are composed of many smaller ommatidia.
The oncogene that causes Burkitt's lymphoma results from:
A. A translocation that moves a proto-oncogene next to an antibody gene B. An inversion that places a proto-oncogene next to a transcription factor gene C. A point mutation in a proto-oncogene D. A virus that inserts next to a proto-oncogene E. A deletion of an anti-oncogene
Viral capsids are generally constructed without any outside aid once the subunits have been synthesized. This process is called ________.
A. facilitated assembly B. self-maturation C. self-assembly D. spontaneous maturation