Scientist believe that the formation of organic polymers, like RNA and DNA, had to move from the watery environment of the seas to solid surfaces or evaporating tidal pools because
A. dehydration is necessary for the formation of large organic polymers, too much water competes with dehydration.
B. hydrolysis is necessary for the formation of large organic polymers, dehydration competes with polymerization.
C. tidal pools would provide a concentrated area where more small organic molecules could aggregate.
D. Kusky discovered 1.43 billion year old fossils in shallow water and tidal pools.
E. sugars dissolve in water, ribose is a sugar and is necessary for the polymerization of DNA and RNA therefore being out of the water would speed up the polymerization reactions.
A. dehydration is necessary for the formation of large organic polymers, too much water competes with dehydration.
You might also like to view...
Captive breeding (Check all that apply)
_____ is a viable strategy whenever very few individuals of a species remain in the wild. _____ has had limited success restoring California condor populations in the western U.S. because of reduced genetic heterogeneity. _____ sometimes deals with low genetic variability and inbreeding. _____ is sometimes a part of efforts to restore ecosystems to a balanced, functional state. _____ successfully increased peregrine falcon populations.
Which of the following statements regarding chemotaxis is incorrect?
A. In a tumble, the flagellum reverses direction, causing the cell to stop moving and change course. B. When a cell detects a nutrient gradient, it will increase the frequency of runs to move toward the nutrient. C. The fuel for flagellar motion is not ATP, but a proton gradient. D. In a cell with peritrichous flagella, each flagellum moves individually but in a coordinated direction during a run.
Which of the choices lists the three phases of the ovarian cycle in the correct order?
A. follicular; luteal; ovulation B. follicular; ovulation; luteal C. follicular; proliferative; secretory D. luteal; secretory; ovulation E. luteal; ovulation; secretory
Which of the following diseases can be prevented by vaccination?
A) typhoid fever B) salmonellosis C) cat scratch disease D) gonorrhea E) chancroid