College Biology Unit 4

What are the three parts of signal transduction pathway?

• reception, transduction, response

• confirmation, transduction, transcription

• reception, amplification, transcription

• confirmation, amplification, response

Tags

NGSS.HS-LS1-3

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

• G₀

• G₁

• G₂

• S

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

Which letter represents the cell membrane?

• A

• B

• C

• D

• E

Tags

NGSS.MS-LS1-2

If a medicine works by blocking a secondary messenger, what effect would it have on that cell signaling pathway?

• It would increase the response if the pathway

• It would trigger the release of more ligands

• It would activate the transcription of a desired gene

• It would inhibit transduction, thus deactivating the response

In cell signaling, how is the flow of specific ions

regulated?

• Opening and closing of ligand-gated channels

• Transduction

• Cytoskeleton rearrangement

• Endocytosis

Tags

NGSS.HS-LS1-3

Which of the following can activate a protein by transferring a phosphate group to it?

• cAMP

• G proteins

• phosphodiesterase

• protein kinase