When NADPH _____ electrons and hydrogen ions in the carbon reactions, NADP+ is formed through _____.
A. accepts, reduction
B. donates, oxidation
C. accepts, oxidation
D. donates, reduction
B. donates, oxidation
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Many factors bind around the core promoter to form the eukaryotic initation complex, but the most important one is ______, which directly binds the TATA box.
A. TFIIA B. TFIIB C. TFIID D. TFIIE E. TFIIF F. TFIIH G. TAF
Answer the following statements true (T) or false (F)
1. A simple dot matrix is the best method to identify homologous sequences from a known sequence. 2. If a gene's sequence is compared among several different vertebrates and they are found to be 95% homologous, one can assume that the genes are derived from the same ancestral gene. 3. Sequences that are alike will produce a horizontal line in a dot matrix analysis. 4. The current genome databases are biased towards species that are important from a research, medical, or agricultural perspective.
The promotion phase of carcinogenesis is enhanced by
A) prolonged or repeated exposure to foreign or natural agents that stimulate cell proliferation. B) inactivation of Ras activity. C) natural selection of cells exhibiting enhanced growth rate and invasive properties. D) a single exposure to a carcinogen. E) a single base-pair change in genomic DNA.
The ability of animals to adjust to seasonal changes in temperature is called:a
acclimatization. b. estivation. c. homeostatic adjustment. d. torpor. e. hibernation.