What is the name of the dartlike protein threads that ciliates can eject from surface organelles when under attack?
a. gullets
b. alveoli
c. trichocysts
d. vacuoles
Ans: c. trichocysts
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As oomycetes infected and killed potato plants during the Irish Potato Famine, oomycetes can be classified as a(n) _________________. Select all correct choices
A. virulent pathogen B. biotrophic pathogen C. avirulent pathogen D. necrotrophic pathogen
Which pressure equals atmospheric pressure during a pneumothorax, causing the lungs to collapse?
A) intrapleural pressure B) atmospheric pressure C) transpulmonary pressure D) rebound pressure (elastic recoil) E) intra-alveolar pressure
radiation
What will be an ideal response?
An earthquake hits a small island. All but a few individuals of a lizard species are eliminated in this catastrophe, and an allele is lost from the population. This is an instance of __________.
a. the bottleneck effect b. the founder effect c. gene flow d. mutation e. natural selection