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Quiz 1 Review
DNA structure and Replication
Question | Answer |
---|---|
What is DNA made of? | DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and a nitrogen bases. |
What does it structure look like? | DNA is made of two strands, which are complementary, the two strands of DNA are connected by hydrogen bonds and twisted into a double helix structure. |
What are the complementary base pairs in DNA? | The complementary base pairs in DNA are adenine, guanine, cytosine, thymine. |
When/why do cells need to make more copies of their DNA? | During a growth spurt, when you are injured, when you are sick or ill, and during sexual reproduction. |
How is DNA replicated? | The double helix is unwound and each strand acts as a template for the next strand. Bases are matched to synthesize the new partner strands. |
What makes DNA replication so fast? | |
What makes DNA replication accurate? Do mistakes ever happen when replicating DNA? |