Sound amplification happens in the middle ear because of ________
A) resonance in the efferent outer hair cells
B) stapedial reflex
C) lever action of the ossicles
D) size difference between the eardrum and oval window
Answer: D
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As N approaches K for a certain population, which of the following is predicted by the logistic equation?
A) The growth rate will not change. B) The growth rate will approach zero. C) The population will show an Allee effect. D) The population will increase exponentially. E) The carrying capacity of the environment will increase.
A solution of starch at room temperature does not readily decompose to form a solution of simple sugars because _____
A) the starch solution has less free energy than the sugar solution B) the hydrolysis of starch to sugar is endergonic C) the activation energy barrier for this reaction cannot easily be surmounted at room temperature D) starch cannot be hydrolyzed in the presence of so much water E) starch hydrolysis is nonspontaneous
Which of the following drugs is (are) effective against cold sores?
A. Protease inhibitors such as ritonavir B. AZT and ddC C. Valcyclovir and acyclovir D. Amantadine
A sexually reproducing animal that can fertilize itselfis known asa ____ hermaphrodite
a. simultaneous b. sequential c. parthogenic d. gastrulated e. preferential