HW #7 - Biology Honors Prentice Hall Textbook by...

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Biology Honors Prentice Hall Textbook by Miller/Levine Chapter 12 pg. 315 #1-34 pg. 317 #1-1 Period 2 1. C 2. D 3. B 4. C 5. A 6. D 7. B 8. C 9. B 10. A 11. DNA can carry information, determine an organism’s traits, and replicate itself. 12. Each nucleotide is made up a 5-carbon sugar, a phosphate group, and a nitrogen-containing base. There are four kinds of bases: adenine, guanine, cytosine, and thymine. 13. Chargaff linked A and T together by observing that [A] = [T] and he also linked G and C together by observing that [G] = [C]. Then when Watson and Crick discovered that the model of DNA was a double helix, they realized that hydrogen bonds paired together nitrogenous bases by base pairing. For every adenine in a double-stranded DNA molecule, there had to be exactly on e thymine molecule; for each cytosine molecule, there was one guanine molecule. 14. Base pairing is the principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine. During DNA replication, the DNA molecule separates into two strands, and then produces two new complementary strands following the rules of base pairing. 15. DNA is folded many times to fit in a prokaryotic cell. Prokaryotic DNA has much less DNA than eukaryotes, but still has 4,639,221 base pairs. In prokaryotic cells, the DNA is found in the cytoplasm and is located in a single circular molecule. 16. Each DNA molecules resulting from replication has one original strand and one new strand.
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HW #7 - Biology Honors Prentice Hall Textbook by...

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