Some scientists speculate that RNA exsisted prior to DNA

a. true
b. false


Answer: a. true

Biology & Microbiology

You might also like to view...

All populations of all species in a habitat are a(n) __________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Agents that can denature microbial proteins include all of the following except ________.

A. metallic ions B. acids C. alcohol D. moist heat E. X rays

Biology & Microbiology

Predict what would happen as the entropy of a system approaches 100%

A) All motion would stop. B) Randomness would become maximized. C) Order would become maximized. D) Heat would decrease.

Biology & Microbiology

Only ____ make direct contact with brain interneurons rather than afferent neurons

a. olfactory receptors b. taste receptors c. chemoreceptors d. mechanoreceptors e. photoreceptors

Biology & Microbiology