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WorksheetsAP Bio Unit 4 Quiz
Total questions: 22
Worksheet time: 11mins
Phosphorylation cascades are often used for
reception
responses
amplification
termination
What happens during reception in cell-signaling
During reception in cell signaling, a signaling molecule (ligand) binds to a specific receptor on the surface of a target cell or inside the cell
During reception, the signaling molecule is internalized into the cell
During reception, the receptor activates an unrelated signaling pathway
If ATP were unavailable, what would be the effect on this pathway?
Protein kinase A would not be produced
GDP would not bind to the transmembrane protein
The hormone would not bind to the transmembrane protein
The secondary messenger would not be produced
Classify the image by their type of communication.
Direct Contact (Animal Cell)
Direct Contact (Plant Cell)
Long Distance / Endocrine Signaling
Local Signaling / Paracrine
Local Signaling / Synaptic Signaling
What is direct contact communication in animal cells called?
Gap Junctions
Plasmodesmata
Endosymbiosis
Spongebob / Patrick Junction
What is the stage of signal transduction labeled A?
Transduction
Response
Reception
Endocrine
What is direct contact communication in plant cells called?
Gap Junctions
Plasmodesmata
Endosymbiosis
Spongebob / Patrick Junctions
Three basic steps of cell signaling
reception
transduction
response
integration
translation
Cell Receptors can be found
embedded in the plasma membrane of the cell
in the cytoplasm or nucleus of the cell.
floating freely in the extracellular fluid
embedded in the mitochondrial membrane
What is the first step of signal transduction?
Reception
Response
Transduction
What is a signaling molecule called?
Activator
Enhancer
Ligand
Repressor
All cells respond to the same ligand with the same response.
True
False
What is the signaling molecule and where does it bind?
Ligand; Enzyme
Ligand; Receptor
Substrate; Enzyme
Substrate; Receptor
Which of the following act as secondary messengers?
ATP and Ca2+
Ca2+ and cAMP
cAMP and ligand
ligand and ATP
What is apoptosis?
Cell undergoing cellular division
Endocrine cell secreting proteins
Programmed cell death
Synthesis of ATP without glucose
Binds to turn on or off gene expression
DNA polymerase
Promoter
RNA polymerase
Transcription factor
What type of signaling is shown here?
autocrine (self-signaling)
juxtacrine (direct cell-to-cell contact)
endocrine (long-distance)
paracrine (short distance)
What determines whether a signal molecule binds on the surface or enters the cell?
size
polarity
ability to cross the membrane
all of these
Protein kinases can activate a protein by transferring a phosphate group to it. What is the benefit of pathways containing phosphorylation cascades with many kinases?
they increase signal reception
they create 2nd messengers
they increase amplification of the response
they terminate the signal transduction pathway
Many cancer cells signal themselves to grow and divide. This is an example of ______ signaling.
endocrine (long distance)
autocrine (self-signaling)
paracrine (short distance)
hormone (long distance)
After a cellular response is achieved, how is it terminated?
the ligand and receptor separate
block the transduction pathway
the cell will keep responding
send out a different signal
Which part of the signaling pathway could consist of protein modification, second messenger production, amplification or a phosphorylation cascade?
Reception
Transduction
Response
All of these
