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Root - Plant Growth Substances
Induction of roots by auxins in stem cuttings is a well known phenomenon. The concentrations needed are much lower as compared to that which promotes shoot growth. Auxins also induce lateral root growth at lower concentrations. High concentrations of auxins are inhibitory to root growth. The auxin transport is basipetal in nature. Produced in shoot apex and lateral active shoot buds-auxins percolate towards roots. Obviously, the concentrations that reach roots are low.
The presence of cytokinins is a must for promotion of cell division in root tips. Cytokinins also interact with auxins in the cellular differentiation to produce roots and shoots. Gibberellins do not seem to be having much role in root growth. Ethylene plays vital role in affecting the nastic responses and geotropism. It also promotes dormancy in buds.
The physician orders 2 liters of lactated ringers over 16 hours. The drip factor of the tubing is 20 gtt/cc. What will be the flow rate? a. 33.33 or 34 gtt/min b. 41.66 or 42
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Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an interface may result in a variety of phenomena such
Ideal Characteristics 1) Maximize gas transfer (oxygen, carbon dioxide and anaesthetic gases) 2) Minimize blood trauma 3) Good heat transfer efficiency 4) Minimize
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Chest Complications : Many of the patients undergoing coronary artery bypass surgery have risk factors for post-operative lung complications. These include old age, chronic obstru
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What evidence is there that makes it seem humans have more than a material existence?
I have an assignment about Pisces in zology can you creat it
The enhancer is the cis-acting nucleotide series to which the transcription factor(s) bind, and which increases transcription of the gene. It is not part of the promoter; the gener
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