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WorksheetsUnit 4 AP Biology (Cell Communication & Cell Cycle)
Total questions: 20
Worksheet time: 10mins
Blood glucose level is high, pancreas releases insulin. The insulin causes the cells to take up blood sugar so the sugar level decreases. Which type of feedback is described above?
Positive
Negative
Which extracellular component aids in direct cell-cell communication?
Cell Wall
Cytoskeleton
Glycolipid
Secretory Vesicle
Predict what would happen if overactive pituitary with TSH release.
TRH levels decrease
TRH levels increase
TRH levels stay the same
Signaling where a ligand binds to a nearby cell is known as...?
Autocrine
Hormonal
Paracrine
Synaptic
Crossing Over?
Does NOT occur
Does occur
An inhibitor that binds to the active site, inhibiting the substrate.
Allosteric Inhibitor
Competitive Inhibitor
Noncompetitive Inhibitor
Repressor Inhibitor
Muscle contraction occurs when calcium binds in the muscle cells. Where is the calcium stored in the muscle cells?
Lysosome
Nucleus
Smooth ER
Vacuole
Which of the following act as secondary messengers?
ATP and Ca2+
Ca2+ and cAMP
cAMP and ligand
Ligand and ATP
Which phase involves single chromatids moving to poles?
Anaphase
Metaphase
Prophase
Telophase
Cancer treatment involves chemotherapy with drugs that inhibit microtubules from depolymerizing. Which phase would the cell be stopped in?
Anaphase
Metaphase
Prophase
Telophase
Interphase occurs ____ mitosis in the cell cycle.
After
Before
During
A mutation in a relay molecule can affect the response.
True
False
The ligand travels through the signal transduction path.
True
False
Oxytocin is released to initiate contractions, the force of the baby on the cervix leads to release of oxytocin, which causes more contractions. What type of feedback is described?
Negative
Positive
Where is the receptor for a protein hormone located?
Intracellular
Membrane Bound
Ligands are specific to the type of cell they bind to.
True
False
Which of the following is a secondary messenger?
ATP
Ca2+
Hormone
Ligand
Binds to turn on or off gene expression
DNA polymerase
Promoter
RNA polymerase
Transcription factor
Which phase involves nuclear envelope forming?
Anaphase
Metaphase
Prophase
Telophase
Calcium is stored in the smooth ER and allows for muscular contractions. How is calcium released from the smooth ER?
Active transport
Gated ion channel
Ion channel
Simple diffusion
