2020 Practice Exam 2 Frq Ap Bio Answers

Question:

Answer: Stomata open in response to low CO2 concentrations in the environment

Question:

Answer: The bag is permeable to IKI but not starch

Question: Signaling molecules on the plasma membrane connected to receptors, what do they do

Answer: They activate the receptor proteins causing them to initiate a signal transduction pathway

Question: Activate a receptor proteins about the binding of the relay protein intern the relay Pro Tien triggers activation of the G protein called RAS how is the RAS protein activated

Answer: A GDP molecule on RAS is replaced with a GTP mollecule

Question: A signal in cascade is illustrated by protein kinase one, protein kinase two, protein kinase three, and MAP. What purpose does the Cascade serve

Answer: The cascade amplifies the signal

Question: The final step in the transcription of mRNA. What is the most likely mechanism that initiates a step

Answer: A product of the signaling cascade activates transcription factors

Question: Mutations leads to form of RAS that does not respond to the relay protein but is permanently activated. For such a mutated are RAS, which of the following is the most likely effective on it’s mitogen functions

Answer: Uncontrolled cell growth, cell division, and cancer

Question: What is it indicated process in the figure catalyzed by

Answer: Reverse transcriptase

Question: The process indicated by process three in the figure is catalyzed by

Answer: RNA polymerase

Question: To complete the process of viral replication, the two processes following the arrow a process for in the figure produce

Answer: Proteins and glycoproteins