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- 1. Multiple Choice
What are the three parts of signal transduction pathway?
reception, transduction, response
confirmation, transduction, transcription
reception, amplification, transcription
confirmation, amplification, response
- 2. Multiple Choice
Transduction step traditionally amplifies the signal, which of the following are NOT involved with transduction?
secondary messengers
protein modification
phosphorylation cascade
ligands
- 3. Multiple Choice
Which of the following is NOT a response by the cell from a signal transduction pathway?
cell growth
gene expression
secretion of molecules
all of the above are responses
- 4. Multiple Choice
Describe what occurs when the ligand binds to the receptor.
confirmation change in shape of receptor
phosphorylation of ligand
ligand passes through the membrane
receptor binds additional ligands
- 5. Multiple Choice
Describe the impact of a mutation in any domain of the protein components of the transduction signaling pathway.
receptor unable to bind to ligand
no changes in transduction due to initial signal transduction from ligand
alters response of the cell
amplification of signaling pathway to bind more ligands
- 6. Multiple Choice
Which feedback mechanism involves homeostasis of a particular condition by regulating physiological processes?
Positive Feedback
Negative Feedback
- 7. Multiple Choice
Which feedback mechanism involves amplifying responses and processes in biological organisms?
Positive Feedback
Negative Feedback
- 8. Multiple Choice
Which of the following is NOT a stage of the cell cycle?
interphase
cytokinesis
mitosis
apoptosis
- 9. Multiple Choice
Which of the following is the stage where the cell no longer divides?
G0
G1
G2
S
- 10. Multiple Choice
Which of the following describes the order of the steps in mitosis?
metaphase, telophase, anaphase, prophase
prophase, metaphase, anaphase, telophase
telophase, anaphase, metaphase, prophase
prophase, anaphase, metaphase, telophase
- 11. Multiple Choice
Which of the following is NOT a role of mitosis?
gametes
tissue repair
growth
asexual reproduction
- 12. Multiple Choice
Which checkpoint is responsible for ensuring nondisjunction does not take place?
G1 checkpoint
S checkpoint
G2 checkpoint
M checkpoint
- 13. Multiple Choice
Describe the interaction between cyclin and CdK.
cyclin interacts with CdK to initiate the mitotic phase
cyclin is the precursor to CdK, when synthesized allow for mitosis proceed
cyclin acts as an inhibitor to CdK to wait for all DNA to be synthesized
cyclin binds to CdK to initiate DNA replication
- 14. Multiple Choice
Mitosis results in...
2 identical diploid cells
4 unique diploid cells
2 unique haploid cells
4 identical haploid cells
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