In general, repressor proteins that act to inhibit eukaryotic gene expression:
A. interfere with communication between Pol II and DNA-binding transactivators.
B. block Pol II-mediated polymerization of ribonucleotides.
C. bind to the C-terminal domain of Pol II.
D. disrupt HMG protein-DNA interactions.
A
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Organisms are composed of molecules, which are collections of smaller units, termed:
A. monomers. B. atoms. C. electrons. D. polymers. E. ions.
What made the plant hybridization studies performed by Mendel more successful than plant hybridization studies performed by others?
A. Mendel did not use true-breeding organisms because he wanted to assess the inheritance of more than one trait per breeding. B. Mendel was the first to identify characteristics of pea plants that could be observed as phenotypes. C. Mendel's understanding of natural selection inspired his methodology to examine the effect of environmental stressors on genetic diversity. D. Mendel used statistical analysis to analyze the phenotypes he observed. E. Mendel used qualitative analysis to evaluate the genotypes he observed.
The energy used to generate most of the ATP formed in aerobic respiration is released when electrons are passed from
NADH along a chain to ____.
a. oxygen b. acetyl CoA c. FADH d. CO2. e. NADPH
After Aristotle, one advance in scientific methodology came through the use of logic. This allowed thinkers to:
a. formulate and test hypotheses based on evidence. b. recognize significance of testing one's hypotheses. c. move carefully from facts to general principles. d. All of the above. e. B and C.