Ch24 - The major fates of glucose (glucose 6-phosphate) in...

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Unformatted text preview: The major fates of glucose (glucose 6-phosphate) in the liver include all of the following except ? A) glycogen B) ribose 5-phosphate C) TAG synthesis D) ketone body synthesis E) ATP synthesis (via TCA and oxidative phosphorylation) Chapter 24 DNA Supercoiling and Chromosome Structure Which of the following is true about DNA supercoiling? A. Supercoiled DNA is in its relaxed state. B. Only closed-circular DNA molecules can be supercoiled. C. Supercoiled circular DNA molecules, when purified and freed from cellular proteins, will lose their supercoiling. D. DNA is supercoiled when the axis of DNA double helix is coiled on itself. Figure 24-1 850x cell length ~700x E. coli A greater amount of DNA does not necessarily correlate with increased number of genes. A gene is all the DNA that encodes the primary sequence of some Fnal gene product (polypeptide or RNA). Figure 24-8 Types of DNA in the human genome: About 1/3 of genome consists of actual genes. The rest consists of transposable elements and miscellaneous sequences like genes encoding RNAs (harder to identify) and simple sequence repeats (SSRs). Figure 24-7 Introns and exons in eukaryotic genes: 85% intron DNA >50% intron DNA Figure 24-9 Important structural elements of chromosomes: Centromeres provide attachment points for the mitotic spindle. Telomeres function to protect the ends of chromosomes from loss of vital genetic information during replication. DNA folding and compaction: The adult human body contains approximately 10 14 cells and thus a total...
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This note was uploaded on 09/21/2010 for the course CH 53380 taught by Professor Raymond during the Spring '10 term at University of Texas at Austin.

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Ch24 - The major fates of glucose (glucose 6-phosphate) in...

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