AP Biology Unit 4 Review

What are the three parts of signal transduction pathway?

• reception, transduction, response

• confirmation, transduction, transcription

• reception, amplification, transcription

• confirmation, amplification, response

Transduction step traditionally amplifies the signal, which of the following are NOT involved with transduction?

• secondary messengers

• protein modification

• phosphorylation cascade

• ligands

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

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

Which of the following is NOT a stage of the cell cycle?

• interphase

• cytokinesis

• mitosis

• apoptosis

Tags

NGSS.HS-LS1-4

Which of the following is the stage where the cell no longer divides?

• G₀

• G₁

• G₂

• S

Tags

NGSS.HS-LS1-4

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

Tags

NGSS.HS-LS1-4

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

Tags

NGSS.HS-LS1-4

Mitosis results in...

• 2 identical diploid cells

• 4 unique diploid cells

• 2 unique haploid cells

• 4 identical haploid cells

Tags

NGSS.HS-LS1-4

Plant cells can exchange small soluble compounds with neighboring cells directly through junctions in the cell wall called -

• gap junctions

• thylakoids

• stomata

• plasmodesmata