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.
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Which of the following statements about the differences between exoskeletons and endoskeletons is correct?
A. An exoskeleton lies external to the body's soft tissues, whereas an endoskeleton lies internal to most of the body's soft tissues. B. Exoskeletons can be repaired easily following damage, whereas endoskeletons are more difficult to repair. C. An exoskeleton grows with an animal, whereas an endoskeleton does not. D. An exoskeleton provides protection for internal organs, whereas an endoskeleton does not. E. All of the answer options are correct
Why is color blindness more common in males? What will be an ideal response?
Along with death, this decreases population size
A) Skin cancer
B) Carbon footprint
C) Age structure
D) Emigration
E) Desertification
F) Chlorofluorocarbon
G) Ozone
H) Carrying capacity
I) Density-dependent
J) Death rate
A newly sequenced gene is cloned and expressed in a bacterial cell. The bioinformatics databases suggest that this gene produces an enzyme that catalyzes the conversion of carbon dioxide to bicarbonate. After weeks of experiments, a scientist determined
the enzyme has a completely different function. This is an example of ________. A) incorrect qPCR B) incorrect enzyme experiments C) incorrect annotation D) incorrect sequencing E) incorrect BLAST parameters