Examine the figures above and answer the following question(s).
-In the figure above,the two strands have separated in step "b" because
A) the sugar-phosphate bonds were broken.
B) the hydrogen bonds between bases were broken.
C) energy from primers pushed the bases apart.
D) the bases, being negatively charged, repelled each other.
E) proteins were inserted between each pair of bases.

Question

Examine the figures above and answer the following question(s).
-In the figure above,the two strands have separated in step "b" because
A) the sugar-phosphate bonds were broken. 
B) the hydrogen bonds between bases were broken. 
C) energy from primers pushed the bases apart. 
D) the bases, being negatively charged, repelled each other. 
E) proteins were inserted between each pair of bases.

Quizplus · Accepted Answer

The separation of the two strands in step "b" is due to the breaking of hydrogen bonds between bases. The sugar-phosphate backbone remains intact, and there is no mention of energy from primers or the insertion of proteins between the bases. The negative charge of the bases is also not a factor in the separation.

Examine the Figures Above and Answer the Following Question(s)