Population growth of microorganisms. In the correct conditions (with warmth, moisture, nutrients) bacteria can multiply rapidly. The human body can provide these conditions for bacteria to multiply, for example in a cut. Each bacterium splits into two up to every 20 minutes. So, after one hour a single bacterium could have reproduced to give eight bacteria.
2.2 Explain the ways an infective agent might enter the body
Contact: Some diseases spread through direct contact with infected skin, mucous membranes, or other body fluids. Diseases transmitted will include cold sores (herpes) and sexually transmitted diseases such as AIDS. Pathogens can also be spread by indirect contact e.g. Someone infected touches a surface such as a doorknob, countertop,
2.2 Explain the ways an infective agent might enter the body
Contact: Some diseases spread through direct contact with infected skin, mucous membranes, or other body fluids. Diseases transmitted will include cold sores (herpes) and sexually transmitted diseases such as AIDS. Pathogens can also be spread by indirect contact e.g. Someone infected touches a surface such as a doorknob, countertop,