BIO 214 EXAM 2 Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) A molecular structure that serves as a pattern for the production of other molecules. For example, one strand of DNA directs the synthesis of the complementary DNA strand.
- Correct Answers ✅template
A protein that binds to a specific regulatory region of DNA to permit transcription of an adjacent gene. - Correct Answers ✅transcriptional activator A protein that binds to a specific regulatory region of DNA to prevent transcription of an adjacent gene. - Correct Answers ✅transcriptional repressor A quick-and-dirty mechanism for repairing double-strand breaks in DNA that involves quickly bringing together, trimming, and rejoining the two broken ends; results in a loss of information at the site of repair. - Correct Answers ✅non homologous end joining A randomly produced, permanent change in the nucleotide sequence of DNA. - Correct Answers ✅mutation An important form of regulation in which the end product of a reaction or pathway stimulates continued activity; controls a variety of biological processes, including enzyme activity, cell 1 / 3
BIO 214 EXAM 2 Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) signaling, and gene expression. - Correct Answers ✅positive feedback loop An ordered display of the full set of chromosomes of a cell arranged with respect to size, shape, and number. - Correct Answers ✅karyotype An RNA molecule with catalytic activity. - Correct Answers ✅ribozyme An RNA polymerase that uses DNA as a template to produce an RNA fragment that serves as a primer for DNA synthesis. - Correct Answers ✅primase At a replication fork, the DNA strand that is made by continuous synthesis in the 5′-to-3′ direction. - Correct Answers ✅leading strand At a replication fork, the DNA strand that is made discontinuously in short separate fragments that are later joined together to form one continuous new strand. - Correct Answers ✅lagging strand Beadlike structural unit of a eukaryotic chromosome composed of a short length of DNA wrapped around a core of 2 / 3
BIO 214 EXAM 2 Questions and Verified Answers, 100% Guarantee Pass (Latest 2025) histone proteins; includes a nucleosomal core particle (DNA plus histone protein) along with a segment of linker DNA that ties the core particles together. - Correct Answers ✅nucleosome Broad term for the modifications that a precursor mRNA undergoes as it matures into an mRNA. It typically includes 5′ capping, RNA splicing, and 3′ polyadenylation. - Correct Answers ✅RNA processing Cell capable of giving rise to any of the specialized cell types in the body. - Correct Answers ✅pluripotent stem cell Cellular mechanism activated by double-stranded RNA molecules that results in the destruction of RNAs containing a similar nucleotide sequence. It is widely exploited as an experimental tool for preventing the expression of selected genes (gene silencing). - Correct Answers ✅RNA interference (RNAi) Class of RNA molecules more than 200 nucleotides in length that does not encode proteins. - Correct Answers ✅long noncoding RNA
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