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.

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.

Morphogens are molecules that Blank______.Multiple choice question.create a concentration gradient to determine cell fatechange the DNA of a cell, which results in changes to the developmental fate of that cellserve as enhancers to repress or activate transcription of genesplay an important role in blocking polyspermy

What can you conclude about a species heavily reliant on diffusible morphogens in early development?Group of answer choicesThey are likely to have small amounts of yolk and holoblastic cleavage.They are likely to have incomplete cleavage (a syncytium).They are likely to have activation via a calcium wave.They are likely to lack an organizer.

Which term refers to the shaping of the embryo as a result of the movement of various cells?Multiple Choicecleavagegrowthmorphogenesisdifferentiation

Which of the following are true about signaling pathways and responses?Group of answer choicesThe duration of a signaling response can be influenced by positive and negative feedback loopsSome types of signaling responses occur much more quickly than othersSometimes different types of signal molecules need to be present at the same time to stimulate a particular effect in the target cellEach signal molecule influences only one type of cell response, meaning that a signal molecule that drives proliferation will not also influence metabolismThe concentration of a signal molecule does not influence the magnitude or type of responseSome signals must be present in high amounts before a target cell will respond, while others are sensitive at low concentrations