One of the most significant steps in the evolution of true cells from macromolecular assemblages was
the evolution of:
a. molecular reproduction.
b. covalent bonding.
c. hydrogen bonding.
d. electronegativity.
e. valence electrons
A
You might also like to view...
Answer the question using the accompanying figure. The electrons at the lowest energy level in the neon atom
depicted are found in which orbital?
a. 1s b. 2s c. 2px d. 2py e. 2pz
What factor would result in an increased mortality in a population due to increased competition for water?
A) demographic transition B) density-dependent factor C) density-independent factor D) increase in carrying capacity
By examining fossil evidence, paleontologists believe that mammals evolved from ancestors of modern
A) arthropods. B) amphibians. C) sharks. D) lobefins. E) reptiles.
Organisms that produce their own food in photosynthesis are known as producers, or ________ ("self-feeders")
Fill in the blank(s) with correct word