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WorksheetsCell Communication
Total questions: 54
Worksheet time: 58mins
cAMP is best described as a (an)
Energy carrying molecule
Secondary Messenger molecule
Membrane Ligand
Receptor molecule
molecular switch on the cytoplasmic side of a membrane
cytochrome complex within the plasma membrane
transmembrane protein
relay message from the inside of the membrane throughout the cytoplasm
removes phosphates from proteins
Transfer phosphates to nucleotides
ATP synthase
G-Protein
In cell signaling, how is the flow of specific ions
regulated?
Opening and closing of ligand-gated channels
Transduction
Cytoskeleton rearrangement
Endocytosis
Many signal transduction pathways use second messengers to:
transport a signal through the lipid bilayer portion of the plasma membrane.
relay a signal from the outside to the inside of the cell.
relay the message from the inside of the membrane throughout the cytoplasm.
amplify the message by phosphorylating proteins.
In cell signaling, how is the flow of specific ions
regulated?
Opening and closing of ligand-gated channels
Transduction
Cytoskeleton rearrangement
Endocytosis
Which of the following can activate a protein by transferring a phosphate group to it?
cAMP
G proteins
phosphodiesterase
protein kinase
What could happen to the target cells in an animal that lack receptors for local regulators?
They could compensate by receiving nutrients via an α factor.
They could develop normally in response to neurotransmitters instead.
They could divide but never reach full size.
They would not be able to multiply in response to growth factors from nearby cells.
A feedback loop best fits which characteristic of life?
Cells
Organization
Homeostasis
Adaptation
According to the feedback loop, what does high blood sugar promote?
Insulin Release
Glucagon Release
Insulin Uptake
Glycogen Uptake
Cyclins are small proteins that bind to and activate CDK enzymes during the process of:
endocytosis
cell respiration
osmosis
mitosis
Cells can communicate with one another via:
chemical messengers
hormones
gap junctions
all of these
When does DNA replication occur?
before M Phase
During M Phase
Directly following telophase
During G0
G1 is associated with what event?
doubling of cell content
DNA replication
The beginning of mitosis
breakdown of the nuclear membrane
