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The 2014 AP Chemistry exam was the first administration of a redesigned test as a result of a redesigning of the AP Chemistry course. The exam format is now different from the previous years, with 60 multiple choice questions (now with only four answer choices per question), 3 long free response questions, and 4 short free response questions.
AP Physics 1: Algebra-Based and AP Physics 2: Algebra-Based [67] Fluids, which used to be Unit 1 in AP Physics 2, became Unit 8 in AP Physics 1. With Fluids no longer being in its curriculum, the section of AP Physics 2 that covered Waves and Optics was split into two units that covered the topic with more depth.
1- Denaturation : In this step, the DNA is heated to 95 °C to dissociate the hydrogen bonds between the complementary base pairs of the double-stranded DNA. 2-Annealing : During this stage the reaction is cooled to 50-65 °C. This enables the primers to attach to a specific location on the single -stranded template DNA by way of hydrogen bonding.
One of the earliest examples of an editing interpreter is the EDT (Editor and Debugger for the TECO) system, which was developed in the late 1960s for the PDP-1 computer. EDT allowed users to edit and debug programs using a combination of commands and macros, paving the way for modern text editors and interactive development environments.