A molecule with the formula CH3CH(NH2)COOH would probably exhibit which of the following characteristics? Molecules with this formula would likely be hydrophobic.
Polymers of this molecule can serve as storage or structural components.
The side chains of this molecule would determine its function.
This type of molecule serves as a vehicle for transmission of genetic material.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.

Which organs of the urinary system allow you to consciously control when urination will occur? a. kidneys and the urethra b. kidneys and the ureters c. bladder and the urethra d. bladder and the ureters

All of these things can block a bronchus and cause collapse of a lung except