CELL_AND_MOLECULAR_BIOLOGY_FINAL_REVIEW_SHEET_VERIFIED_ANSWERS.pdf

CELL AND MOLECULAR BIOLOGY FINAL
REVIEW SHEET VERIFIED ANSWERS

●● The nonbackbone of DNA is the
Answer: aromatic base (adenine or guanine or uracil or thymine or
cytosine)


●● Draw example of DNA structure
Answer:


●● ATP vs. dATP
Answer: ATP has an extra OH which is why d stands for deoxyadenosine


●● Nucleotides in the DNA chain are covalently linked by these
Answer: phosphodiester bonds (between the 3'hydroxy group of one
deoxyribose and the 5' phosphate group of the next deoxyribose)


●● Draw a phosphodiester bond
Answer:


●● Draw the cytosine
Answer:

,●● Draw thymine (DNA only)
Answer:


●● Draw uracil (RNA only)
Answer:


●● Draw adenine
Answer:


●● Draw guanine
Answer:


●● Is DNA right-handed or left-handed double helix?
Answer: right


●● What holds the bases together in DNA?
Answer: hydrogen bonds


●● A always bonds to
Answer: T

, ●● G always bonds to
Answer: C


●● DNA in the nucleus is bonded how?
Answer: double stranded (2) in an antiparallel orietnation (5' end to 3'
end of other)


●● This is the term for binding two complimentary strands of DNA into
a double-stranded structure
Answer: annealing or hybridization


●● What is the term for separation of strands?
Answer: melting or denaturation


●● What are the pyrimidine bases?
Answer: C, T, U (c.u.t pyramid cake)


●● What are the purine bases?
Answer: A, G


●● These type of interactions between bases in DNA help to stabilize it
Answer: hydrophobic