Bio 340 Powerpoint review exam 1 part 1 Summer 2018.pptx

Bio 340 Powerpoint review exam 1 part 1 Summer 2018.pptx -...

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1) A double-stranded DNA molecule contains 60 A’s and 105 G’s. Calculate the total number of bases in this molecule.
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2) A DNA double helix is replicated in the presence of radioactively labeled nucleotides. This produces two daughter molecules in which all newly synthesized DNA is radioactive and all original DNA is non- radioactive. Which of the following drawings shows the pattern of radioactivity in the daughter molecules? Radioactive DNA is red. A) B) C)
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3) Consider the sequence of base pairs near the origin of replication. Do you expect it to be: A) Rich in AT base pairs. B) Rich in GC pairs. C) No particular base composition
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4) Consider the following replication fork. Two new strands are synthesized simultaneously, one on each fork. One of these strands is made in a single piece (that is, continuously). The other must be made in small pieces that are then stuck together. On which branch (A or B) is the new strand made continuously? A B
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5) Prior to the replication of its chromosomes, a cell synthesizes the proteins it will need to do the job. Which of the following proteins must be made in the largest amount? A) Primase B) Helicase C) DNA pol III D) Ligase E) Histone
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