Biology Ch 11 Fifth Edition Brooker BRCC
1033 Exam Questions and Answers
Figure 11.4 Nucleotides and their components. For simplicity, the carbon atoms in the ring structures are
shown only for guanine and cytosine in part (a).
Concept Check: Which pyrimidine(s) is (are) found in both DNA and R...
Figure 11.15 The oxygen in a new phosphoester bond comes from the sugar.
Figure 11.17 Synthesis of new DNA strands. The separation of DNA at the origin of replication produces
two replication forks that move in opposite directions. New DNA strands are made near the opening of
each fork. The leading strand is made continuously in the same direction the fork is moving. The lagging
strand is made as small pieces in the opposite direction. These small pieces are then connected to each
other to form a continuous lagging strand.
Concept Check: Which strand, the leading or lagging strand, is made discontinuously in the direction
opposite to the movement of the replication fork? - ANSWER✔✔-Chapter 11 Concept Checks
Figure 11.17 The lagging strand is made discontinuously in the direction opposite to the movement of
the replication fork
Figure 11.19 Proteins involved with the synthesis of the leading and lagging strands in E. coli.
Concept Check: Briefly describe the movement of primase in the lagging strand in this figure. In which
direction does it move when it is making a primer, from left to right or right to left? Describe how it must
move after it is done making a primer and has to start making the next primer at a new location. Does it
have to hop from left to right or from right to left? - ANSWER✔✔-Chapter 11 Concept Checks
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