THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Similar signaling pathways in diverse eukaryotes are evidence of conserved evolutionary processes
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Cell signaling uses the highest molecular weight found in living cells
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Cell signaling has largely been replaced by other functions in mammals
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Cell signaling functions mainly during early developmental stages
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Detailed explanation-1: -Answer and Explanation: Cell communication is critical for the function of both unique cellular and multicellular eukaryotes. Similar cell signaling pathways in diverse eukaryotes are evidence of conserved evolutionary processes. Answer choice C.
Detailed explanation-2: -Which of the following is likely true of cell signaling? Similar cell signaling pathways in diverse eukaryotes are evidence of conserved evolutionary processes.
Detailed explanation-3: -Paracrine signaling allows cells to locally coordinate activities with their neighbors. Although they’re used in many different tissues and contexts, paracrine signals are especially important during development, when they allow one group of cells to tell a neighboring group of cells what cellular identity to take on.
Detailed explanation-4: -The similarities in signal transduction pathways suggest that ancestral signaling molecules evolved long ago in ancient prokaryotes and single-celled eukaryotes and have since been adopted for new uses by their multicellular descendents.
Detailed explanation-5: -Which of the following provides correct information about cell signaling that supports the claim? The SRY gene produces a protein that binds to specific regions of DNA in certain tissues, which affects the development of these tissues.