Which of the following statements about morphogens is correct?Group of answer choicesOnly hormones can act as morphogens.Morphogens diffuse through tissues to create gradients.Cells can only respond to one morphogen at a time.All cells will display the same response to one morphogen.
Question
Which of the following statements about morphogens is correct?Group of answer choicesOnly hormones can act as morphogens.Morphogens diffuse through tissues to create gradients.Cells can only respond to one morphogen at a time.All cells will display the same response to one morphogen.
Solution
The correct statement about morphogens is: "Morphogens diffuse through tissues to create gradients."
Here's why:
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Not only hormones can act as morphogens. Morphogens can be any molecule that regulates pattern formation in embryonic development and can include hormones, but also other substances like proteins and RNAs.
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Morphogens do indeed diffuse through tissues to create gradients. This is one of their key characteristics. They are produced in one area and then spread out, or diffuse, into surrounding areas. The concentration of the morphogen decreases with distance from the source, creating a gradient. Cells respond to this gradient by turning on different genes and thus developing into different types of cells.
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Cells can respond to more than one morphogen at a time. In fact, it's the combination of different morphogens and their concentrations that often determine the fate of a cell.
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Not all cells will display the same response to one morphogen. The response of a cell to a morphogen is dependent on the cell's position in the gradient and the concentration of the morphogen it is exposed to. Different concentrations can trigger different responses, leading to the formation of different cell types or tissues.
Similar Questions
All the following statements about morphogens are true except:Group of answer choicesThey are paracrine signals.During development, they help cells know where they are in the body.Different concentrations of a morphogen can have different effects on a target cells.They become more concentrated the further away you go from their source.
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Which statement is accurate?(A) Hormones that differ in effect reach their target cells bydifferent routes through the body.(B) Pairs of hormones that have the same effect are said tohave antagonistic functions.(C) Hormones are often regulated through feedback loops.(D) Hormones of the same chemical class usually have thesame function
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