The greatest concentration of nitrogen on Earth is found in ____
a. living organisms, including bacteria
b. the atmosphere
c. soil minerals
d. fossil fuels
e. oceans
ANSWER: b
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Shallow water above the continental shelves is the:
1.Benthic region
2.Coastal zone
3.Neritic zone
4.Open ocean
5.Pelagic zone
Where on this phylogenetic tree of primate evolution do you find evolution of the hominines?
A. No. 1 B. No. 2 C. No. 3 D. No. 4 E. No. 5
Homologous chromosomes have ___________.
A. the same length but differing genes B. the same shape but differing genes C. the same genes but differing shapes D. the same genes but differing lengths E. the same length, shape, and genes
An important indicator of evolutionary relatedness is to determine:
a. size of the periplasmic space b. similarities of cell membrane proteins c. size of the bacterial chromosome d. nitrogen base sequence of rRNA e. size of the ribosomes