Repressible system - tryptophan (the effector molecule) interacts with the repressor protein such that it can bind to the operator.
<span>Answer = C,
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The growth of lymphoid tissue in the gut is fueled by TNFa. Because TNF/Rorc(gt)/ mice, who express higher amounts of TNF but lack RORgt+ LTi cells, also generate lymphoid tissue in sites of inflammation, the development of this ectopic lymphoid tissue was not contingent on the presence of conventional RORgt+ LTi cells. Surprisingly, these animals produced a number of lymph nodes that resembled those of wild type animals in both structure and function. When stromal cells were activated during the late stages of embryogenesis and when an organogenic pathway that permitted the formation of lymph nodes was activated, TNF generation by F4/80+ myeloid cells located inside the anlagen was crucial.
to know more about peripheral or secondary lymphoid organs - <u>brainly.com/question/13553292</u>
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It is inportant because kelp forest provide food and shelter for most sea creatures and provide foo for humans as well. It helps you undertsand that in the Maringe life there are plants that grow in saltwater like seawed and that they porvide food and also protection for smaller sea creatures.HOPE THIS HELPS.LET ME KNOW IF IT DOES. Or if a specific answer is needed.
Answer:
A
Explanation:
by definition, cell membrane receptor are specialized membrane proteins, allowing communication between the cell and the extracellular space.
I am almost positive that the answer is D all of the above because The Calvin Cycle was discovered and named after Melvin Calvin, It is part of the light independent reactions and it does produce glucose
