A plant cell exhibits defects in transcription of transfer RNA genes. The gene encoding which polymerase is likely to be mutated in this cell?
What will be an ideal response?
RNA polymerase III
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Why is the outcome of a base-pair substitution mutation variable? List and describe the possible outcomes of a base-pair substitution mutation in your answer
What will be an ideal response?
Which of the following could likely play a role in causing cancer?
1.Cells adhere too strongly to one another, causing a tumor to form. 2.Kinase enzymes add phosphates onto proteins that regulate the cell cycle. 3.The cell cycle skips interphase. 4.Checkpoint proteins make cells “commit suicide.”
When the sympathetic nervous system is triggered glycogen is broken down to glucose to provide more energy.
a. true b. false
Identify and briefly describe the function of the labeled structures in the human eye pictured here. 
A:________B:________C:________D:________E:________F:________G:________H:________I:________J:________
What will be an ideal response?