Answer:
Our immune system produces antibodies against that antigen of pathogen.
Explanation:
Injecting an antigen from a pathogen would help our immune system memorize the infection and protect our body from causing of the disease because our immune system produces antibodies against that antigen so when the pathogen enters our body these antibodies attack on that and prevent them of causing infection in the body so that's why injecting an antigen has to be done from the childhood to prevent diseases.
The answer would be sandstone
The correct option is D. Organisms work best at their optimum temperature and pH, above and below these temperature they will not be able to function as expected. It is possible that the students above use different temperature and pH when they were carrying out their experiments, this will result in different efficiency rate by the yeasts.
Before carbohydrates are absorbed, the enzymes sucrase,
maltase and lactase digest disaccharides into monosaccharides in the small
intestine. Sucrase breaks down sucrose into glucose and fructose, maltase
breaks down maltose into two glucose, and lactase breaks down lactose into
glucose and galactose.
