What step occurred first in the evolution of life?
a. formation of lipid spheres
b. formation of protein-RNA systems
c. formation of membrane-bound protocells
d. spontaneous formation of lipids, proteins, carbohydrates, and nucleotides under abiotic
conditions
e. formation of ATP
D
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Genomic analyses of the apple- and hawthorn-feeding races of Rhagoletis suggest that genetic divergence between the
two species has largely been driven by ____ selection, a diversifying form of natural selection.
a. disruptive b. directional c. stabilizing
d. artificial e. sexual
Where are the molecules used to carry out photosynthesis encoded?
A) All are encoded in chloroplast DNA. B) Some are encoded in chloroplast DNA and others in nuclear DNA. C) All are encoded in nuclear DNA. D) Some are encoded in nuclear DNA and others in mitochondrial DNA.
A seed has three parts: an embryo, a source of food for the developing embryo called ________, and a protective cover.
A. antheridium B. ovule C. rhizoid D. endosperm E. cone
Describe how organisms can be classified in terms of their nutritional pattern. Specifically categorize organisms in terms of how they obtain organic carbon, the source of electrons for their redox reactions, and the source of energy to make ATP
Finally, use correct terminology to combine these categories to organize the types of organisms by their metabolic strategies. What will be an ideal response?