Which of the following is not part of the lower respiratory system?

A. Sinuses
B. Trachea
C. Bronchi
D. Bronchioles
E. Alveoli


Answer: A

Biology & Microbiology

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Refer to the paragraph on dark-eyed junco birds. The UCSD campus male junco population tails were, on average, 36% white, whereas the tails of males from nearby mountain populations averaged 40—45% white

A) mutations in the UCSD population B) sexual selection C) gene flow between populations D) a genetic bottleneck E) a founder effect

Biology & Microbiology

Ecosystem diversity

A. is the diversity of animal species within a defined geographical area. B. is primarily associated with aquatic habitats. C. refers to the structure and function within an ecosystem. D. includes only species-rich ecosystems.

Biology & Microbiology

What is the sticky female region of a flower that is specialized for receiving pollen?

a. stamen b. stigma c. anther d. ovary e. endosperm

Biology & Microbiology

Generall ymicrobiologists observe the colonial morphology of organisms on primary culture after how many hours of incubation/

A. 24-48 HOURS B. 18-24 hours C. 72 hours D. 6-12 hours

Biology & Microbiology