Fireflies have the ability to convert the energy in ATP to light. Which of the following types of work is performed by the firefly?
A) bioluminescent
B) heat
C) concentration
D) electrical
E) mechanical
A) bioluminescent
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The salinity of seawater at the equator is:
a. high due to evaporation. b. low due to precipitation. c. high due to freezing. d. low due to river input.
Which of the following is true of this person?
1.The person must be female because the mosaic pattern results from X inactivation.
2.The gene for the darker color is on the Y chromosome so one X chromosome is inactivated.
3.The darker color is expressed from the Barr body.
4.Dosage compensation ensures that there are equal numbers of light and dark skin cells.
Which of the following statements concerning hydrocarbons is false?
A) Octane is a hydrocarbon. B) Hydrocarbons are insoluble in water. C) Hydrocarbons are the most abundant organic molecules in cells. D) Only hydrogen atoms are used to complete the valence requirements of carbon in hydrocarbons. E) Phospholipids have hydrocarbon tails.
What is the function of a fish's operculum?
A) Detects biofields in the immediate vicinity B) Detects movements in the surrounding water C) Protects the gills D) Provides buoyancy