Which Approach Is Defined by Manipulating a Variable Under Carefully

question 179

Multiple Choice

Which approach is defined by manipulating a variable under carefully controlled conditions and observing the changes in a second variable?

• A)experimental approach
• B)survey approach
• C)testing approach
• D)naturalistic approach

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Definitions:

Lagging Strand

A strand of DNA that is synthesized as a series of short segments, called Okazaki fragments, which are then covalently joined by DNA ligase. Compare with leading strand.

Leading Strand

Strand of DNA that is synthesized continuously. Compare with lagging strand.

Okazaki Fragment

One of many short segments of DNA, each 100 to 1000 nucleotides long, that must be joined by DNA ligase to form the lagging strand in DNA replication.

DNA Helicase

An enzyme that unwinds the DNA helix ahead of the replication fork, allowing the replication machinery to access the single strands of DNA.