answer only question number 7.please answer only question number 7
Stem cell self renewal is the capability of the cell to undergo several cycles of cell division while maintaining the undifferentiated state. The self renewal programs are regulated by cell-extrinsic signals from the niche, the microenvironment that maintains stem cells and regulates their function in tissues.
Neurotrophins are a family of proteins that induce the survival, development, and function of neurons. They belong to a class of growth factors, secreted proteins that are capable of signaling particular cells to survive, differentiate, or grow. Example neurotrophin-3 is a protein growth factor that helps to support the survival and differentiation of existing neurons and encourages the growth and differentiation of new neurons and synapses.
Possible fates of a cell after injury are necrosis , apoptosis or repair,regeneration and replacement.
Mitogen helps in regulating development and in forming differentiated cells.
answer only question number 7.please answer only question number 7 Why termination of a cell signaling...
32. Study the signaling pathway illustrated below, which involves two different receptors. Assume that a protein is active only when it is activated, but not inhibited, by its upstream signaling molecules. Activation and inhibition are indicated by normal and blunt arrows, respectively. Assume that the transcription regulator can be activated by either the binding protein or the kinase that are immediately upstream of the transcription factor. Under which of the following conditions will the expression of target:gene "X" be induced?...
PLEASE INCLUDE THE LETTER ANSWER WITH THE EXPLANATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Where in a mitochondrion is the proton gradient the smallest? o é o Across the outer mitochondrial membrane At the tips of the cristae furthest from the outer mitochondrial membrane At those parts of the cristae that are closest to the outer mitochondrial membrane There are no proton gradients in a mitochondrion Between the thylakoid lumen and the matrix o o The...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow to happen within the myofiber? (5 points) 2. According to the paper, what is the major disadvantage of relying on glycolysis during high-intensity exercise? (5 points) 3. Using Figure 1 in the paper, briefly describe the different sources of ATP production at 50% versus 90% AND explain whether you believe this depiction of ATP production applies to a Type IIX myofiber in a human....
Developmental Biology Help! Please answer all the questions 1) We discussed the fact that each stripe expression pattern is affected by the enhancer region that is utilized. Knowing that the maternal genes and the gap genes can both contribute to the pair-rule genes, and that in many cases multiple stripes may be contained in one area of GAP, how does the embryo have definition of stripes if all of these transcription factors can be within the same cell A it...