Which of the following was probably NOT a natural energy source that drove the chemical reactions
leading to the first organic molecules?
a. sunlight
b. electrical storms (lightning)
c. photosynthesis
d. radioactive decay
e. heat energy released from Earth's core
C
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Explain how the Linnaean system of classification, although developed without any concept of
evolutionary theory, provided a reasonable, if not perfect, framework for later application of evolutionary systematics. What limitations of the Linnaean system have spurred cladists to argue for its abandonment and replacement by modern cladistic approaches?
What will be an ideal response?What is a ribozyme made of?
What will be an ideal response?
The smallest unit of life that can exist as a separate entity is a(n)
a. cell. b. molecule. c. organ. d. population. e. ecosystem.
The wing of a bald eagle is ________ the wing of a penguin
A) convergent with B) homologous to C) unrelated to D) analogous to