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Ch. 11 - Cell-Cell Interactions

Chapter 11, Problem 7

Suppose you were to model amplification by the phosphorylation cascade in Figure 11.16, using a penny for each kinase 1, a nickel for each kinase 2, and a dime for each kinase 3. Also suppose that Ras and each of the kinases can activate 10 proteins. How much money would you need to construct your model?

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Hi everyone. Let's look at the next problem here, it says Which of the following is the result of signal amplification through the phosphor relation cascade. Well, let's recall the signal amplification allows a single hormone molecule to send a signal that can be quickly amplified. And a correlation cascade is caused by one molecule phosphor relating the next in a chain reaction. So let's look at our answer choices. Choice A says. It leads to the phosphor relation of thousands of proteins. And this is correct in that cascade. One protein phosphor relating the next. You can end up phosphor awaiting thousands of proteins. That's what has this powerful effect of amplifying a signal so greatly when you have the hormone sending a signal allows the body to respond very quickly to hormonal signals. Choice B says, at least to a reduction and signal molecules. That is not correct. It doesn't cause a reduction in the signal molecules. Choice C says it produces thousands of enzymes. That's not correct. It does not produce new enzyme. The enzyme is what catalyze is the reaction of phosphor relation but produces the protein itself. That's been phosphor related interest. D it leads to a genetic mutation. That is not our answer. It does not cause a genetic mutation just causes a change in the molecule being phosphor elated. See you in the next video
Related Practice
Textbook Question

Which of the following actions correctly describe a role performed by at least one type of intercellular connection? Select True or False for each statement. T/F Allows communication between adjacent cells. T/F Forms a watertight barrier between the cells. T/F Uses components of the extracellular matrix to indirectly connect adjacent cells. T/F Associates with cytoskeletal components to resist pulling forces.

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Textbook Question

What does it mean to say that a signal is transduced? a. The signaling molecule enters the cell directly and elicits a cellular response. b. The signal is generated by the production of proteins. c. The physical form of the signal changes between the outside of the cell and the inside. d. The signal is amplified.

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Textbook Question

Summarize the experimental evidence in sponges showing that animal cells adhere to each other selectively. Explain the molecular basis of selective adhesion.

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Textbook Question

What is the significance of the observation that many signal transduction pathways create a network, where they intersect or overlap?

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Textbook Question

Steroid hormones, like most lipid-soluble signaling molecules, are processed directly. How does the absence of a signal transduction cascade in the processing of steroid hormones affect (a) signal amplification?

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Textbook Question

Steroid hormones, like most lipid-soluble signaling molecules, are processed directly. How does the absence of a signal transduction cascade in the processing of steroid hormones affect (b) signal regulation?

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