The high number of potential combinations from only four base pairs and the impact of small changes in the sequence of base pairs contributes to the diversity of proteins in an organism.
During this time you should read the questions and create short outlines to guide your responses.
To make the most of these practice questions, take 5 to 10 minutes to read the questions and create an outline.
Identify, isolate, and test one experimental variable in your experiment.
Identify any variables that you must control, and explain the apparatus that you will use to measure the cellular respiration.
These long series of base pairs code for longer and more complex proteins that can differ in minor or very significant ways.
For example, sickle cell anemia is caused by only one base pair difference in the genetic code for hemoglobin, but this base pair causes an incredible difference in the function of the protein.
Practice is crucial to divide your time efficiently.
You will get a ten minute reading period between the multiple choice and free response sections.
The DNA strands are actually copied in small segments and linked together to form an entire strand.
Although there are only four different base pairs, the longer the strand gets, the more combinations of base pairs can be created.