The current extinction rate of vertebrates is 100–1,000 times the historical background. This is primarily due to
A. overharvesting.
B. competition with exotic species.
C. habitat destruction.
D. competition with native species.
E. random chance.
C. habitat destruction.
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What structure in the CNS do neurons from olfactory epithelium first transmit action potentials to?
A. amygdala B. accessory olfactory bulb C. olfactory bulb D. cerebral cortex E. cerebellum
Even if chromosomes are not a perfect match, pairing centers sometimes allow synapsis
Indicate whether the statement is true or false.
What mechanism is one that prevents fertilization due to reproductive times?
a. Behavioral isolation b. Anatomical isolation c. Habitat isolation d. Temporal isolation
Which of the following is an accurate statement about A-B toxins?
A) The A and B components must remain attached in order to exert their effects on the cell. B) They are a type of endotoxin. C) The A component binds to a receptor on the host cell. D) They are proteins.