Gradient = difference in elevation/horizontal distance
Answer:
the enzyme and substrate fit together like a lock and key.
Answer: Option C.
Explanation:
Tumor suppressor genes are genes that help to control cell growth or division. It cause the production of protein which is important in cell growth. It encode protein that slow or inhibit progression in a specific stage of cell cycle leading to DNA repair or cell adhession. If the cells grow uncontrollable, it leads to cancer. When there is mutation of tumor suppressor genes,it result in reduction in its function.
Correct answer:
A vaccine is a substance that stimulates the antibodies production and helps to provide immunity against one or more than one disease. It is made by taking a small amount of dead or whole weaned germs such as bacteria or virus that cause the disease.
When these weakened pathogens are introduced in the body they evoke the immune response inside the body and activates T- cells and B-cells inside the body, which prepare antibodies against that antigen in advance in order to save the body from infection by the same pathogen in the near future.
A vaccine introduces a weakened flu virus into the body
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The immune system identifies antigens on the weakened flu virus
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Antibodies are produced, which bind to the weakened flu virus and signal immune cells to destroy it
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The actual flu virus enters the body, and lymphocytes recognize the antigens
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Antibodies are quickly produced and allow the body to fight off the infection
Till this day We are always learning more and more so I think this can be helpful for future vaccines of diseases