Enzymes are biological catalysts which speed up the speed of reaction by lowering the activation energy without itself being consumed for e.g to digest proteins there are dfrn enzymes and to digest carbohydrates there are dfrn enzymes every enzyme is specific in its function
Answer :
The image will not be transferred to the back of the eye.
In order for a country to ensure sustainable development, multiple strategies should be adopted that should improve the human life. The development should have no long-term harmful and negative effect on the environment as it is essential to preserve the environment while continuously developing. Moreover, the responsibility of this development is equally of both the leaders as well as the citizens. But in no case, it is possible to ensure sustainable development if no money is spent. The money spending is necessary for the growth. However, it should be properly planned and should not drain the economic health of the country.
Hence, the correct answer is 'it should cost no money at all for better economic health'.
CD4 and CD 8 are molecules present on the surface of T cells where they interact with major histocompatibility (MHC) Molecules.
CD4 and CD8 improve T cell signalling by attaching to MHC class II (CD4) or MHC class I (CD8) molecules on APCs.
- The association of CD4 with MHC class II significantly decreases the number of antigenic peptides necessary for T cell activation (5) and significantly boosts cytokine output by helper T cells.
The MHC molecules' wide polymorphism is their distinguishing trait.
- This polymorphism is crucial for T cell antigen recognition.
- A T cell detects antigen as a peptide bound by a specific allelic variation of an MHC molecule and will not identify the identical peptide bound by other MHC molecules.
- This type of T cell activity is known as MHC limitation.
Hence, the correct answer is option C
Learn more about MHC here,
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Answer:
parasympathetic division; sympathetic division
