Cell Communication and Signaling
Biology ⇒ Cell Biology
Cell Communication and Signaling starts at 10 and continues till grade 12.
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See sample questions for grade 10
A patient has a mutation that prevents their cells from producing insulin receptors. What effect would this have on their cells' ability to respond to insulin?
A scientist observes that a cell responds to a signal only when a certain protein is present on its surface. What is this protein likely to be?
Describe the role of feedback mechanisms in cell signaling.
Describe the role of protein kinases in signal transduction pathways.
Describe the three main stages of cell signaling.
Describe what happens during the reception stage of cell signaling.
A patient has a mutation that prevents their cells from producing insulin receptors. What effect would this have on their cells' ability to respond to insulin?
A scientist observes that a cell responds to a signal only when a certain protein is present on its surface. What is this protein likely to be?
Which of the following best describes endocrine signaling? (1) Signals act on the same cell (2) Signals act on nearby cells (3) Signals travel through the bloodstream to distant cells (4) Signals are transmitted by direct contact
Which of the following best describes paracrine signaling? (1) Signals act on the same cell that secreted them (2) Signals act on nearby cells (3) Signals travel through the bloodstream to distant cells (4) Signals are transmitted by direct cell-to-cell contact
Which of the following is a possible result of a cell signaling pathway? (1) Cell division (2) Cell death (3) Change in metabolism (4) All of the above
Which of the following is a second messenger? (1) Glucose (2) cAMP (3) DNA (4) Insulin
Fill in the blank: In synaptic signaling, the signaling molecule released by neurons is called a __________.
Fill in the blank: The enzyme that produces cyclic AMP (cAMP) from ATP is called __________.
Fill in the blank: The molecule that binds to a receptor and initiates a signal is called a __________.
Fill in the blank: The process by which a cell converts an external signal into a functional change is called __________.
True or False: All cells in the body respond to every hormone released.
True or False: All signaling molecules can cross the cell membrane to bind to intracellular receptors.
True or False: Cell signaling is important for the development and maintenance of multicellular organisms.
True or False: G-protein coupled receptors (GPCRs) are found only in animal cells.
