In the evolution of the first cells on the developing planet Earth, polymers had to evolve. The following support this path toward cell development EXCEPT for
A. amino acid exposure to amino acids were shown to abiotically polymerize by Fox
B. clay was helpful in the polymerization of proteins and nucleic acids as shown by Cairns-Smith
C. Chech and Altman's RNA first hypothesis
D. adaptive radiation
Ans: D. adaptive radiation
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If a set of genes is induced in the presence of the controlling substance, it is referred to as ________ control.
Fill in the blank(s) with the appropriate word(s).
Of the following enzymes associated with the TCA cycle, which of the following enzymes is not under allosteric regulation?
A) isocitrate dehydrogenase B) ?-ketoglutarate dehydrogenase C) malate dehydrogenase D) fumarate hydratase E) pyruvate dehydrogenase complex
The substance O2 is considered to be
a. both a molecule and a compound. b. a compound but not a molecule. c. neither a molecule nor a compound. d. a molecule but not a compound. e. a chemical but not a biological molecule.
Ciliates include the genus
a. Euglena. b. Anopheles. c. Trichomonas. d. Paramecium. e. Entamoeba.