Definition. The host (also called the susceptible host) is the human body: someone who is at the risk of infection. Infections do not necessarily occur when pathogens enter the body of the person whose immune system is functioning normally.Whether or not a pathogen will result in infection depends upon several factors related to the host (the person exposed), the pathogen itself, and the environment.nfections do not necessarily occur when pathogens enter the body of the person whose immune system is functioning normally. Whether or not a pathogen will result in infection depends upon several factors related to the host (the person exposed), the pathogen itself, and the environment.
You can find out how many calories are in a food by looking at the nutrition facts label. The label also will describe the components of the food â how many grams of carbohydrate, protein, and fat it contains. Here's how many calories are in 1 gram of each: 1  carbohydrate â 4 calories.  protein â 4 calories.
Non-fiber carbohydrates are considered to have 4 calories per gram. So in the example of the corn, there are 12 grams of fiber. This leaves 111 grams of carbs times 4 calories = 444 calories from carbohydrates.There are 16 grams of protein in the 166 gram quantity and protein is also counted @4 calories per gram, so 4x16= 64 calories from protein.Fat is considered to have 9 calories per gram and the cup of corn contains 8 grams of fat, so 8x9=72 calories from fat.or instance, 1 cup of co â¦ rn weighs 166 grams. Of that weight, 123 grams are carbohydrates. I think your real question may have been, How many calories in a gram of carbohydrate?. This is a little tricky because indigestible fiber is considered to be carbohydrate but being indigestible has no calories.